from:"Tom Harris"

Re: [neonixie-l] Scope Clock SC200C

2021-10-30 Thread Tom Harris

Which is why you use a string of them in series for this sort of thing.
With appropriate insulation, I saw glass tube used in a physics lab.

On Sun, 31 Oct. 2021, 12:31 am 'John Rehwinkel' via neonixie-l, <
neonixie-l@googlegroups.com> wrote:

> Most DMMs have 10Meg input impedance, so you can put a 10meg resistor
> in-series with your meter, and measure double the voltage.
>
>
> Note that many resistors are rated at only 150V, and aren't suitable for
> high voltage service like this.  There are, of course, resistors with
> sufficient voltage specifications, but they're less likely to be found in
> your junk box.
>
> - John
>
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Re: [neonixie-l] Re: Tubes that turn it up to eleven: Hivac XN-2

2021-09-02 Thread Tom Harris

Sorry I see that they were base 12. Decimal hours? But clocks count hours
from 1, not zero.

On Fri, 3 Sep 2021, 9:52 a.m. Tom Harris,  wrote:

> What were these tubes used for? Base 11 is not used much.
>
> On Fri, 3 Sep 2021, 12:00 a.m. Paul Andrews,  wrote:
>
>> The GR-B can also display two digit numbers (1 thru 10)
>> https://www.nixies.us/bwg_gallery/grb/
>>
>>
>> On Thursday, September 2, 2021 at 2:29:39 AM UTC-4 tntm...@gmail.com
>> wrote:
>>
>>> I sent you an email
>>> On Thursday, September 2, 2021 at 1:59:40 AM UTC-4 LB wrote:
>>>
>>>> The Hivac XN-2 can display the numbers 0 through 11, and is to my
>>>> knowledge the only tube that can display two-digit numbers (excluding
>>>> pandicons). I have 3 I'd be willing to trade away, please PM me if you are
>>>> interested.
>>>> [image: XN-2_Digit_10_WA copy.JPG]
>>>> [image: XN-2_Digit_11_WA copy.JPG]
>>>>
>>>> --
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>> .
>>
>

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Re: [neonixie-l] Re: Tubes that turn it up to eleven: Hivac XN-2

2021-09-02 Thread Tom Harris

What were these tubes used for? Base 11 is not used much.

On Fri, 3 Sep 2021, 12:00 a.m. Paul Andrews,  wrote:

> The GR-B can also display two digit numbers (1 thru 10)
> https://www.nixies.us/bwg_gallery/grb/
>
>
> On Thursday, September 2, 2021 at 2:29:39 AM UTC-4 tntm...@gmail.com
> wrote:
>
>> I sent you an email
>> On Thursday, September 2, 2021 at 1:59:40 AM UTC-4 LB wrote:
>>
>>> The Hivac XN-2 can display the numbers 0 through 11, and is to my
>>> knowledge the only tube that can display two-digit numbers (excluding
>>> pandicons). I have 3 I'd be willing to trade away, please PM me if you are
>>> interested.
>>> [image: XN-2_Digit_10_WA copy.JPG]
>>> [image: XN-2_Digit_11_WA copy.JPG]
>>>
>>> --
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> .
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Re: [neonixie-l] Cheapest 6-digit edge lit clock so far

2021-07-08 Thread Tom Harris

Can anyone tell me what microcontroller it uses? The manual didn't say:)

Tom Harris 


On Fri, 9 Jul 2021 at 08:22, gregebert  wrote:

> Well, mine arrived today nicely packaged, with no instructions. I'm glad
> the version I bought already had the PCB assembled. The basic assembly went
> OK, though I had to disassemble and reassemble when I found a baseplate
> piece was backward. Also, make sure you install the battery BEFORE you
> assemble it. The edge-lit plastic pieces need to have the protective layer
> removed, which is tedious work. As Eric pointed out, these pieces are a bit
> delicate, so handle with care. Once you have the clock assembled, they are
> safe. It runs from a 5V USB power supply, and the cable is provided.
>
> There are operating instructions on the AliExpress listing.
>
> I need to 3D-print some pieces to block ambient light in order to read the
> display during the day.
>
> This is a much better quality display than an original edge-lit unit, and
> for the ridiculously low price of 38 USD, you cant beat this.
>
> On Friday, June 11, 2021 at 12:15:26 PM UTC-7 Terry Bowman wrote:
>
>> On Jun 10, 2021, at 5:27 PM, Tidak Ada  wrote:
>>
>> Keep car with the figures! The plastic is no plexi-glass, but a more
>> breakable plastic.
>>
>>
>> What else could it be? You have to be careful with thin acrylic because
>> it snaps like a twig.
>>
>>
>> Black cardboard/paper between the digits deminishes blurring of the
>> neighboring decade.
>>
>>
>> Good idea.
>>
>>
>> Terry Bowman, KA4HJH
>> "The Mac Doctor"
>>
>> https://www.astarcloseup.com
>>
>> “...the book said something astonishing, a very big thought. The stars,
>> it said, were suns but very far away. The Sun was a star but close
>> up.”—Carl Sagan, "The Backbone Of Night", *Cosmos*, 1980
>>
>>
>> --
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Re: [neonixie-l] Re: Four Letter Word Clocks

2021-05-28 Thread Tom Harris

Ho Ho I don't often search for "playboy":)

On Fri, 28 May 2021, 10:37 p.m. J Forbes,  wrote:

> You're welcome. It took me well under a minute to find that site...but I
> did know to use the magic word "playboy" in my google search, since I was
> around this group 20 years ago when Ray was still active.
>
> On Thursday, May 27, 2021 at 8:53:31 PM UTC-7 celephicus wrote:
>
>> Fascinating... Thank you, I've never seen that before. Into the
>> rabbit hole
>>
>> On Fri, 28 May 2021, 1:17 p.m. J Forbes,  wrote:
>>
>>> A start here...but there is lots more if you delve deep into the old
>>> posts on this group.
>>>
>>> https://www.oocities.org/tokyo/8908/fourletterword/index.html
>>>
>>> On Thursday, May 27, 2021 at 7:54:48 PM UTC-7 celephicus wrote:
>>>
>>>> Greetings,
>>>>
>>>> I am doing a Hackaday project on my enormous FLW build, and I would
>>>> like to know the history of the FLW concept, I know Raymond Weisling
>>>> invented them, is there an authoritative history of them? In particular,
>>>> who came up with the idea of using a word association database to generate
>>>> the words?
>>>>
>>>> Tom Harris 
>>>>
>>> --
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>>> .
>>>
>> --
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Re: [neonixie-l] Re: Four Letter Word Clocks

2021-05-27 Thread Tom Harris

Fascinating... Thank you, I've never seen that before. Into the
rabbit hole

On Fri, 28 May 2021, 1:17 p.m. J Forbes,  wrote:

> A start here...but there is lots more if you delve deep into the old posts
> on this group.
>
> https://www.oocities.org/tokyo/8908/fourletterword/index.html
>
> On Thursday, May 27, 2021 at 7:54:48 PM UTC-7 celephicus wrote:
>
>> Greetings,
>>
>> I am doing a Hackaday project on my enormous FLW build, and I would like
>> to know the history of the FLW concept, I know Raymond Weisling invented
>> them, is there an authoritative history of them? In particular, who came up
>> with the idea of using a word association database to generate the words?
>>
>> Tom Harris 
>>
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> .
>

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[neonixie-l] Four Letter Word Clocks

2021-05-27 Thread Tom Harris

Greetings,

I am doing a Hackaday project on my enormous FLW build, and I would like to
know the history of the FLW concept, I know Raymond Weisling invented them,
is there an authoritative history of them? In particular, who came up with
the idea of using a word association database to generate the words?

Tom Harris 

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Re: [neonixie-l] Re: Neon Lamp Matrix

2021-05-05 Thread Tom Harris

Gregebert you are quite correct about the probable connection and the
voltage spread, it would only work within the same batch, I built a 3x3 and
it was tricky as hell to get working. I'm told there were Soviet era neon
lamps with a wider voltage spread that would be easier.

Maybe this guy:
https://hackaday.com/2020/07/23/384-neon-bulbs-become-attractive-display/
knew about the issues!


Tom Harris 


On Thu, 6 May 2021 at 08:40, gregebert  wrote:

> So if the display was static, using only pulses to turn bulbs on or off,
> then it was most likely all bulbs were resistively tied to a sustaining
> voltage, say 70 volts.
> If individual rows were sequentially pulsed higher, say +85V while columns
> were pulsed slightly negative, then those targeted bulbs would turn on. It
> would be very tricky because the ionization and sustaining voltages will
> change over time and vary across manufacturing lots.
>
> On Wednesday, May 5, 2021 at 1:49:44 PM UTC-7 Jon D. wrote:
>
>> Copy that...
>>
>> On Wed, May 5, 2021 at 2:42 PM Tidak Ada  wrote:
>>
>>> Oops, a typo.It is ZM1215 of course as the file name says.
>>> eric
>>> Verstuurd vanaf mijn iPhone
>>>
>>> Op 5 mei 2021 om 22:36 heeft Jon Jackson  het
>>> volgende geschreven:
>>>
>>> 
>>> is this a ZM1251 or ZM1215 ??  You have conflicting info...
>>>
>>> On Wed, May 5, 2021 at 2:29 PM Tom Harris  wrote:
>>>
>>>> Thanks for the ideas but it was definitely static with the pulses just
>>>> used to turn the lamps on or off. After that they would keep their state
>>>> indefinitely.
>>>>
>>>> Tom Harris 
>>>>
>>>>
>>>> On Thu, 6 May 2021 at 01:21, gregebert  wrote:
>>>>
>>>>> If it was pulsed-DC, then it probably was simple multiplexing.
>>>>>
>>>>> I have thought about doing it with AC, which makes the driver more
>>>>> complex, but it will make the bulbs last longer since both electrodes will
>>>>> be illuminated (alternately, of course). Not sinusoidal AC, but
>>>>> square-waves. If you do the math, a typical neon bulb is "on" for about 
>>>>> 2/3
>>>>> of an AC cycle (on at 90V, off at 60V) so that would be my starting point
>>>>> for multiplexing. I was thinking a 7 x 9 matrix, using 2:1 multiplexing.
>>>>> It's more driving circuitry but it might be possible with an HV-series
>>>>> device that can drive high and low.
>>>>>
>>>>> On Wednesday, May 5, 2021 at 5:46:13 AM UTC-7 celephicus wrote:
>>>>>
>>>>>> Can someone please help me out, I remember an article from some
>>>>>> scanned book from the 60s where a set of neon lamps were connected in a
>>>>>> matrix with clever biasing and pulses on the row & column could toggle an
>>>>>> individual lamp. I thought it was the GE glow lamp manual but it seems 
>>>>>> not.
>>>>>>
>>>>> --
>>>>> You received this message because you are subscribed to the Google
>>>>> Groups "neonixie-l" group.
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>>>>> an email to neonixie-l+...@googlegroups.com.
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>>>>> .
>>>>>
>>>> --
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>>>> .
>>>>
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Re: [neonixie-l] Re: Neon Lamp Matrix

2021-05-05 Thread Tom Harris

Wow each lamp was individually pinned out. How did they drive these? Big
diode matrix?

Tom Harris 


On Thu, 6 May 2021 at 06:27, Tidak Ada  wrote:

> There was ever a Mullard ZM1251. A 5×7 neon dot matrix at the size of a
> stamp.
>
>
>
> eric
>
>
>
> *Van:* neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] 
> *Namens
> *gregebert
> *Verzonden:* woensdag 5 mei 2021 17:21
> *Aan:* neonixie-l
> *Onderwerp:* [neonixie-l] Re: Neon Lamp Matrix
>
>
>
> If it was pulsed-DC, then it probably was simple multiplexing.
>
>
>
> I have thought about doing it with AC, which makes the driver more
> complex, but it will make the bulbs last longer since both electrodes will
> be illuminated (alternately, of course). Not sinusoidal AC, but
> square-waves. If you do the math, a typical neon bulb is "on" for about 2/3
> of an AC cycle (on at 90V, off at 60V) so that would be my starting point
> for multiplexing. I was thinking a 7 x 9 matrix, using 2:1 multiplexing.
> It's more driving circuitry but it might be possible with an HV-series
> device that can drive high and low.
>
> On Wednesday, May 5, 2021 at 5:46:13 AM UTC-7 celephicus wrote:
>
> Can someone please help me out, I remember an article from some scanned
> book from the 60s where a set of neon lamps were connected in a matrix with
> clever biasing and pulses on the row & column could toggle an individual
> lamp. I thought it was the GE glow lamp manual but it seems not.
>
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Re: [neonixie-l] Re: Neon Lamp Matrix

2021-05-05 Thread Tom Harris

Thanks for the ideas but it was definitely static with the pulses just used
to turn the lamps on or off. After that they would keep their state
indefinitely.

Tom Harris 


On Thu, 6 May 2021 at 01:21, gregebert  wrote:

> If it was pulsed-DC, then it probably was simple multiplexing.
>
> I have thought about doing it with AC, which makes the driver more
> complex, but it will make the bulbs last longer since both electrodes will
> be illuminated (alternately, of course). Not sinusoidal AC, but
> square-waves. If you do the math, a typical neon bulb is "on" for about 2/3
> of an AC cycle (on at 90V, off at 60V) so that would be my starting point
> for multiplexing. I was thinking a 7 x 9 matrix, using 2:1 multiplexing.
> It's more driving circuitry but it might be possible with an HV-series
> device that can drive high and low.
>
> On Wednesday, May 5, 2021 at 5:46:13 AM UTC-7 celephicus wrote:
>
>> Can someone please help me out, I remember an article from some scanned
>> book from the 60s where a set of neon lamps were connected in a matrix with
>> clever biasing and pulses on the row & column could toggle an individual
>> lamp. I thought it was the GE glow lamp manual but it seems not.
>>
> --
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> .
>

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[neonixie-l] Neon Lamp Matrix

2021-05-05 Thread Tom Harris

Can someone please help me out, I remember an article from some scanned
book from the 60s where a set of neon lamps were connected in a matrix with
clever biasing and pulses on the row & column could toggle an individual
lamp. I thought it was the GE glow lamp manual but it seems not.

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Re: [neonixie-l] Found this nice blue box

2020-08-12 Thread Tom Harris

I had an old diathermy machine. First time I've ever seen a switch labelled
"coagulate" and "cut"!

That one is beautiful. The 3 indicator lights look like a 1950's robot face.

Tom Harris 


On Thu, 13 Aug 2020 at 05:10, Jean-Pierre G  wrote:

> Hi there,
>
> Thanks a lot for all the informations you provided !
>
> Here is a new track. After discussion with my friend's uncle, he told us
> that this device was coming from a dentist and possibly used for
> "electrotherapy".
> So probably not a diathermy system nor an electrical scalpel.
>
> I do like this finding !
>
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Re: [neonixie-l] Re: Anode current and voltage measurement

2019-05-20 Thread Tom Harris

Try the ZXCT1009. It's a current mirror on a single 3 pin package intended
for high side current sensing.
https://www.diodes.com/assets/Datasheets/ZXCT1009.pdf

The output voltage can go straight into the ADC input of a microcontroller.


Tom Harris 


On Tue, 21 May 2019 at 10:08, gregebert  wrote:

> Thanks for posting this!  I had no idea there were diff-amps available
> that could handle such a high input voltage. A single instance is all you
> really need even if there are multiple tubes, because it's possible to
> measure each tube individually by blanking all others.
>
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Re: [neonixie-l] Fairchild 1970s Nix meter?

2019-05-11 Thread Tom Harris

Interesting how they designed in the old days. A double sided board but
still had a wiring loom. Even though there looks like lots of space for
tracks left.


On Sun, 12 May 2019, 3:06 a.m. Mac Doktor,  wrote:

>
> > On May 11, 2019, at 12:39 PM, martin martin  wrote:
> >
> > Not sure what do do with it.. Any ideas?
>
> Replace the filter caps.
>
>
> Terry Bowman, KA4HJH
> "The Mac Doctor"
>
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Re: [neonixie-l] Mystery tube

2019-04-09 Thread Tom Harris

Transient suppressor? But they are gas filled.

On Wed, 10 Apr 2019, 1:47 p.m. 'John Rehwinkel' via neonixie-l, <
neonixie-l@googlegroups.com> wrote:

> Looks like a spark gap or TR switch, but I suppose it could be a nitrogen
> laser.
>
>
> > On Apr 9, 2019, at 11:25 PM, Nicholas Stock  wrote:
> >
> > Anyone have an idea what this is? 4 pins. Doesn’t glow next to a plasma
> globe and doesn’t have any distinguishing markings on the base except some
> hand written numbers.Appears to have two C shaped wires connected to
> each pair of pins with a small gap between the electrodes.
> >
> > Nick
> >
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Re: [neonixie-l] Pinball score reel clock

2019-02-17 Thread Tom Harris

Where do you get the displays from?  They appear rarer than the more exotic
Nixie's.

On Mon, 18 Feb 2019, 3:05 p.m. Shaun Merrigan  Just saw an interesting a article about building a 4 digit clock using
> electro-mechanical score reels from pinball machines:
>
> https://www.elektormagazine.com/magazine/88/42431
>
> Video here:
>
> https://youtu.be/lQL2Vk1Hj-o
>
> I will be building this one.
>
> Shaun M
>
>
> Sent from my iPad6
>
> No Regret
>
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Re: [neonixie-l] Neon Signs

2016-05-12 Thread Tom Harris

Are the cheap fluorescent testers on ebay that cost $15 or so and take 4 AA
batteries any good?


Tom Harris <celephi...@gmail.com>

On 13 May 2016 at 10:43, Tom Harris <celephi...@gmail.com> wrote:

> I have several neon transformers that I could use for testing, one with HV
> leads ending in croc clips. I call it Cousin Vinnie, as if there's a
> problem, Cousin Vinnie will fix them :) Still a pocket tester that will
> not kill you outright sounds a good idea. I've seen sparkies using them to
> test fluoro tubes.
>
>
> Tom Harris <celephi...@gmail.com>
>
> On 13 May 2016 at 09:14, Nick de Smith <n...@desmith.net> wrote:
>
>> Not the wrong place at all. There are Neon tube testers, small battery
>> powered units, that can test to see it if the tubes are OK.
>>
>> Where abouts are you located - there may at be a member near you who can
>> help or lend you a tester...
>>
>> Nick
>>
>>
>> On 13 May 2016 00:02:52 BST, Tom Harris <celephi...@gmail.com> wrote:
>>>
>>> Sorry if this is the wrong group. I have been offered a large quantity
>>> of vintage neon tubes from old signs, "burgers", "restaurant" "cafe", that
>>> sort of thing, together with straight & curved lines. How do I find out the
>>> value? I can test them.
>>>
>>> Tom Harris <celephi...@gmail.com>
>>>
>>>
>>> <https://www.avast.com/sig-email?utm_medium=email_source=link_campaign=sig-email_content=webmail>
>>>  Virus-free.
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>>>
>>>
>> --
>> Sent from my Android device with K-9 Mail. Please excuse my brevity.
>>
>
>

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Re: [neonixie-l] Neon Signs

2016-05-12 Thread Tom Harris

I have several neon transformers that I could use for testing, one with HV
leads ending in croc clips. I call it Cousin Vinnie, as if there's a
problem, Cousin Vinnie will fix them :) Still a pocket tester that will
not kill you outright sounds a good idea. I've seen sparkies using them to
test fluoro tubes.


Tom Harris <celephi...@gmail.com>

On 13 May 2016 at 09:14, Nick de Smith <n...@desmith.net> wrote:

> Not the wrong place at all. There are Neon tube testers, small battery
> powered units, that can test to see it if the tubes are OK.
>
> Where abouts are you located - there may at be a member near you who can
> help or lend you a tester...
>
> Nick
>
>
> On 13 May 2016 00:02:52 BST, Tom Harris <celephi...@gmail.com> wrote:
>>
>> Sorry if this is the wrong group. I have been offered a large quantity of
>> vintage neon tubes from old signs, "burgers", "restaurant" "cafe", that
>> sort of thing, together with straight & curved lines. How do I find out the
>> value? I can test them.
>>
>> Tom Harris <celephi...@gmail.com>
>>
>>
>> <https://www.avast.com/sig-email?utm_medium=email_source=link_campaign=sig-email_content=webmail>
>>  Virus-free.
>> www.avast.com
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>>
>>
> --
> Sent from my Android device with K-9 Mail. Please excuse my brevity.
>

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[neonixie-l] Neon Signs

2016-05-12 Thread Tom Harris

Sorry if this is the wrong group. I have been offered a large quantity of
vintage neon tubes from old signs, "burgers", "restaurant" "cafe", that
sort of thing, together with straight & curved lines. How do I find out the
value? I can test them.

Tom Harris <celephi...@gmail.com>

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Re: [neonixie-l] The Light Clock Kickstarter

2016-04-22 Thread Tom Harris

It's a nice idea, they just stuffed up making it. Looks pretty easy to make
properly.

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Tom Harris <celephi...@gmail.com>

On 22 April 2016 at 07:24, Jon D. <jondad...@gmail.com> wrote:

> What a disappointment and waste of $153 (shipping included) this was.  The
> photos speak to the quality (or lack thereof) cosmetically.  This is going
> to be a rebuild cosmetically for sure.  Holy crap !!!  The reason I am
> sending this out is because they are trying to sell these on the open
> market.  BUYER BEWARE.
>
> Here is what they promised:
> https://www.kickstarter.com/projects/1054187792/the-light-clock/description
>
>
> (I am being very respectful here, and telling the truth, such as it is.  I
> also sent this info to Kickstarter corporate, not that I expect them to do
> anything about it...they already got their cut.)
>
> Just received my package for a so-called $153 Light Clock.  Aesthetically,
> what a ripoff.  You should be ASHAMED to be associated with this !!!  What
> a piece of sh*t!!!  Looks like a 5-year-old put their greasy hands all over
> the the face.  This cannot be displayed in anyone's home (as is).
>
> The face is also clearly knicked in 2 places.  And the LED strip was loose
> on the end.  Who did the quality control?  You cannot blame shipping on any
> of this.  THIS WAS SHIPPED IN A CRAPPY, POORLY FINISHED STATE (though the
> box was manged a little).  Holy crap am I disappointed.  I guess this
> cannot be the present I intended.
>
> This cannot be displayed on any wall in my home or anyone else's, not even
> the garage.
>
> To date of all the Kickstarters I have participated in, this is hands down
> THE WORST LOOKING piece of crap I have ever received.  WOW !!!
>
>
> I haven't even plugged it in yet.  Maybe after I cool off.
>
> Strangely, they proudly showed a photo of all of the boxes stacked up in
> their garage prior to shipping -- so they must not have even looked in the
> boxes because mine is complete crap visually.
>
> I did comment on the Kickstarter page to the makers (dare I call them
> that), to Kickstarter Corporate, as well as mentioning this on Twitter.
> And now I am posting here so you can all avoid this PoS as they try to sell
> to an otherwise unsuspecting public.
>
> Live and learn...
>
> Jon
>
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Re: [neonixie-l] Krka and Tesla

2016-01-20 Thread Tom Harris

I know, just a funny typo. Tesla wouldn't have been the first
super-intelligent scientist (Nobel prizewinner!) to descend into
crack-pottery. He's still my favourite Serbian :)


Tom Harris <celephi...@gmail.com>

On 21 January 2016 at 08:31, Quixotic Nixotic <nixci...@jsdesign.co.uk>
wrote:

> On 20 Jan 2016, at 20:52, Tom Harris wrote:
>
> > I did  a Google search on krcka tesla and it corrected it to "cracked
> Tesla". Some people's opinion on his state of mind!
>
> You just spelled Krka wrongly - drop the c.
>
> John S
>
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Re: [neonixie-l] Re: Nixie Clock on Tonight's Storage Wars

2015-08-12 Thread Tom Harris

Funny story about your mate and TV producers. I used to sell secondhand
books and I was asked a few times for a free loan of a book for a TV show.
Get real! Good on your mate for maintaining his integrity and refusing to
lie.

Tom Harris celephi...@gmail.com

On 12 August 2015 at 19:02, Quixotic Nixotic nixci...@jsdesign.co.uk
wrote:

On 12 Aug 2015, at 07:27, Dekatron42 wrote:

There is a clip of that part here:
http://www.aetv.com/storage-wars/video/daves-nixie-tube-clock

/Martin

I have a friend who runs UK auctions of coin-operated amusement machines,
circus and fairground memorabilia http://www.elephanthouseauctions.com/

He is regularly contacted by a model of TV show where people 'discover'
rare machines in barns and attics. They make the stories up and have
invariably bought these things somewhere for their story appeal at far
greater sums than they are worth. My friend is often asked to lie about the
value for the sake of the camera and storyline. He won't do it.

As moderator of the British Jukebox Owners forum I have many times been
asked by TV production companies for any members who have something rare
and unusual with story appeal. Sometimes they already bought some junk and
want to find someone to make it work. This style of TV show is so cheap and
easy for them to make and they think you will be so star struck you'll do
it free of charge, including delivery and collection from their premises at
times and on dates to their specification.

I was once asked to help a fake scenario where they had bought a junk
jukebox. They suggested to me that perhaps someone's Dad is dying of cancer
and would love to have this forgotten old jukebox he's had sitting in his
garage restored by members of the family, so he can enjoy his last dying
days. They will document the process, leading to tears in poor old Dad's
eyes when he finally hears that Doris Day record again. Aaagh!

Usually, when told the timeframe for sourcing missing parts from around
the world and the cost of re-chroming alone, they lose interest. They want
it quick, cheap and emotional.

John S

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Re: [neonixie-l] One-Bit Digital Clock

2015-07-23 Thread Tom Harris

Ever read Dr. Seuss? In one of my favourites Dr. S's Sleep Book we have a
special clock:

But I do know this clock does one very slick trick.
It doesn’t tick tock. How it goes, is tock tick.

Looks like yours slipped back in time to the 1960's and visited the good
Doctor S.

Tom Harris celephi...@gmail.com

On 22 July 2015 at 15:06, Instrument Resources of America
iracosa...@hughes.net wrote:

I see that he used an old Beckman, Universal EPUT and timer for the
clock basics. Many people do not know what EPUT meant. It stood for 'Events
Per Unit Time', just FYI. There's your trivia for the day. Ira.

On 7/21/2015 2:34 PM, David Forbes wrote:

My brother made an all-tube clock, but it uses neons instead of Nixies.
The decade counter modules were found in a thrist store. HP counters also
use them.

A person could find the right HP AC-4 modules to make it work with Nixie
tubes.

http://www.selectric.org/tubeclock/

http://nixiebunny.com/hpac4/index.html

On 7/21/2015 1:35 PM, PsyPhi wrote:

Hello everyone! I've been lurking on this list sporadically for a few
months, and now that I have something specific to share/contribute I
decided to join.
I've been a mad scientist all my life, and have always been fond of
tubes. After seeing several examples of nixie clocks on the web, I wanted
to build one of my own. Using all tubes, of course. Soon I realized that
the RD was going to be much more fun than the actual implemention.

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Re: [neonixie-l] A guy at a Dutch forum made a clock with 7-segment flip over displays bij 3D-printing

2015-07-22 Thread Tom Harris

The clockmakers (Ingrams) I do odd jobs for have one of these running from
GPS hung up in their office window. When it flips it makes anyone not used
to it jump in the air! It faces onto Eastlink, a big freeway in Melbourne
Australia, just north of the Canterbury Rd exit, so look out for it
Melburnians!

Tom Harris celephi...@gmail.com

On 21 July 2015 at 09:38, Nicholas Stock nickst...@gmail.com wrote:

That'll keep you up at night...;-)

Nice work.

On Mon, Jul 20, 2015 at 4:20 PM, Tidak Ada offl...@zeelandnet.nl wrote:

Hi All,

At a Dutch forum somebody 3D printed his own flip-over 7-segment
displays.(photo)

Here a YouTube video: [ *https://www.youtube.com/watch?v=7uj_47nwWAo*
https://www.youtube.com/watch?v=7uj_47nwWAo ]

eric

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Re: [neonixie-l] Vacuum Pump

2015-06-08 Thread Tom Harris

Superb. This is all the information I need. My pump is similar enough that
I can tackle the job without worrying that I am going to break something.
Some new oil is on order from Ebay, I can't wait to start! Thanks so much,
this list is chockers with helpful folk.

Tom Harris celephi...@gmail.com

On 9 June 2015 at 07:21, David Forbes dfor...@dakotacom.net wrote:

Tom,

This page from Finland has a bit of information on the ES 50 pump, which
may or may not be similar to yours.

http://personal.inet.fi/koti/kristian.ukkonen/es50/es50_overhaul.html

My colleagues all are familiar with the Welch pumps, not Edwards. One
fellow says that parts may be available from an outfit in New Mexico.

--David Forbes

On 6/8/2015 2:02 PM, Tom Harris wrote:

I couldn't find anything online on servicing a vacuum pump. I might have
to
perform my generic service routine. Take the thing apart, clean
everything,
replace anything worn, lubricate anything that moves, put back together. I
do remember from my lab days that vacuum systems use silicone grease as a
seal and lubricant and it got everywhere very quickly. What fun.

The goal is indeed to make large discharges in glass. As well as make a
vacuum cannon (look it up), the most impressive thing to do when you can
get a good vacuum. That and re-enact Joseph Wright's painting experiment
with a bird in the air pump I suppose.
On 09/06/2015 5:45 AM, gregebert gregeb...@hotmail.com wrote:

I saw a few tidbits online from a google search, but no service manual.
Might be very hard to get spare parts, etc.

I was planning to experiment with a vacuum pump from Harbor Freight Tools
later this year; people have claimed it can pull down to 25 microns
(yeah,
right.) but it's definitely good enough to get a glow discharge. I
plan
to see if I can get anything interesting with helium and/or argon inside
a
glass beer-bottle.

Sounds a bit silly, but it shouldn't be too difficult to get a decent
seal on it, then bake-out the impurities in a modified toaster-oven. No
need for dangerous bombarding. Helium is very easy to get, and seems to
have enough spectral emission in the visible region.

Where am I going with this ? Just suppose it's possible to make a large
nixie-like tube the size of a beer-bottle. Think CD47 (saw *one* on Ebay
yesterday for $1300; apparently the seller gave up trying to find enough
of
these to build a clock. Gone now.).

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Re: [neonixie-l] Vacuum Pump

2015-06-08 Thread Tom Harris

You probably dont have a lot to lose by opening-up the pump. It's pretty
old so if it gets irreparably damaged you can always get a new pump.

What level of vacuum are you targeting for your devices ?

You are right, but I dislike breaking old stuff. This pump weighs about
35Kg, 10Kg of which is the casing and belt guards! The motor runs so
sweetly you can hardly hear it. Besides who would name a product line
Speedivac now?

I have no idea about level of vacuum, I just want to play around. This is
only a single stage pump, so it will not go very deep.

Tom Harris celephi...@gmail.com

On 9 June 2015 at 07:26, gregebert gregeb...@hotmail.com wrote:

You probably dont have a lot to lose by opening-up the pump. It's pretty
old so if it gets irreparably damaged you can always get a new pump.

What level of vacuum are you targeting for your devices ?

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Re: [neonixie-l] Vacuum Pump

2015-06-08 Thread Tom Harris

Now that's just bragging!

Tom Harris celephi...@gmail.com

On 9 June 2015 at 09:03, David Forbes dfor...@dakotacom.net wrote:

On 6/8/2015 2:02 PM, Tom Harris wrote:

I recommend using one of these instead... it's in our spectroscopy lab.
Note the Coke can for scale.

--David Forbes

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Re: [neonixie-l] new project: FLW with socially outsourced word generation

2015-05-27 Thread Tom Harris

That's why I like Python too!

Tom Harris celephi...@gmail.com

On 28 May 2015 at 10:36, Cqr ro...@cqr-ltd.com wrote:

Stay off those meds I like the result :)
I'll put it up on github once sanitized a bit for public consumption, but
most of the magic is from the twython library and python itself which makes
extracting data from the Twitter api a breeze really. It's practically
English if you name your variables right :)

Cheers,
. Robin.

On 28 May 2015, at 00:40, Tom Harris celephi...@gmail.com wrote:

Put your code up online. Then we can have a network of such things. I
would use a large flipdot display in a semi-public place like a makerspace.
People can use the obsolete display technology of their choice! Smoke
signals even! Semaphore! Morse code! Perhaps it's time for my medication...

Tom Harris celephi...@gmail.com

On 28 May 2015 at 09:27, Michail1 via neonixie-l
neonixie-l@googlegroups.com wrote:

The link to youtube video is actually a tiny picture.

Wanna see the video and details. :)

Michail

In a message dated 5/27/2015 3:57:40 P.M. Pacific Daylight Time,
ro...@cqr-ltd.com writes:

Hi Folks,
I got around to doing something with the B-7971 I had. Along with a
raspberry pi that had lain unused for far too long.
It's an FLW-alike that is connected to Twitter to harvest words, here's a
link to a short vid:
youtube video https://i.ytimg.com/vi/86_GQmUG-Lk/default.jpg

Not much electrical engineering going on with the design as I just used
TaylorEdge PSU and smart sockets, the fun was in the programming the Pi.

It needs a case making but I'm waiting on a camera extension cable
right now (and also tempted to add at least two more tubes ... has anyone
from the UK here got any I could buy?)

It displays the time and the words that will fit on the display from a
random tweet feed. It also displays TWOI: the TWitter Originality Index or
the ratio of original tweets to retweets seen in the random feed.

It will listen out for any tweets with the hashtag #NixieBotShowMe use
that tag and it'll send you back a picture of the next word in your tweet
after that tag that will fit on the display.

Other tags you can add on are #NBreceipt for a DM acknowledgement and
#TheTime .

@mention others in your tweet to get them mentioned in the reply.

Outgoing tweets are limited to one a minute and queued so you may have to
wait a while if it gets popular.

Follow it on twitter @NixieBot to see all the words that get sent.

Bear in mind that it's the internet providing words so don't blame me if
you see something rude. Hopefully the fact that everyone who wants to can
see what was submitted by who (and reply to them ) should make it somewhat
self policing... maybe!

Future additions planned include fetching and displaying the odd stock
quotation every now and then (for old time's sake) and maybe plugging it
into this mailing list for a word source too. Other ideas welcome :)

Cheers,
Robin.

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Re: [neonixie-l] new project: FLW with socially outsourced word generation

2015-05-27 Thread Tom Harris

Put your code up online. Then we can have a network of such things. I would
use a large flipdot display in a semi-public place like a makerspace.
People can use the obsolete display technology of their choice! Smoke
signals even! Semaphore! Morse code! Perhaps it's time for my medication...

Tom Harris celephi...@gmail.com

On 28 May 2015 at 09:27, Michail1 via neonixie-l
neonixie-l@googlegroups.com wrote:

The link to youtube video is actually a tiny picture.

Wanna see the video and details. :)

Michail

In a message dated 5/27/2015 3:57:40 P.M. Pacific Daylight Time,
ro...@cqr-ltd.com writes:

Not much electrical engineering going on with the design as I just used
TaylorEdge PSU and smart sockets, the fun was in the programming the Pi.

It needs a case making but I'm waiting on a camera extension cable right
now (and also tempted to add at least two more tubes ... has anyone from
the UK here got any I could buy?)

It will listen out for any tweets with the hashtag #NixieBotShowMe use
that tag and it'll send you back a picture of the next word in your tweet
after that tag that will fit on the display.

Other tags you can add on are #NBreceipt for a DM acknowledgement and
#TheTime .

@mention others in your tweet to get them mentioned in the reply.

Outgoing tweets are limited to one a minute and queued so you may have to
wait a while if it gets popular.

Follow it on twitter @NixieBot to see all the words that get sent.

Cheers,
Robin.

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Re: [neonixie-l] new project: FLW with socially outsourced word generation

2015-05-27 Thread Tom Harris

Thanks for the link. That's a lot of motors!

Tom Harris celephi...@gmail.com

On 28 May 2015 at 09:49, David Forbes dfor...@dakotacom.net wrote:

Not an obsolete display technology, but very interesting for its fur
pixels...
https://fnews.com/an-interactive-fur-mirror-by-daniel-rozin-u032

On 5/27/2015 4:40 PM, Tom Harris wrote:

Put your code up online. Then we can have a network of such things. I
would use
a large flipdot display in a semi-public place like a makerspace. People
can use
the obsolete display technology of their choice! Smoke signals even!
Semaphore!
Morse code! Perhaps it's time for my medication...

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Re: [neonixie-l] FLW Clocks

2015-04-20 Thread Tom Harris

Interesting discussion. Lots of interest in FLW clocks and derivatives.
What interests me is using that database of word associations derived from
psychological profiling, so that for example after the word flee the word
fear shows up 80% of the time, with the word foes taking the remaining
20%. A random word would only be chosen when a word caused no associations,
there are quite a few in the database. I suppose there were recorded at the
end of a session. Nice touch Dr. Odell with a dirty word defeat switch.
These show up quite a lot in the database. An interesting inverse position
would be to only use dirty words :)

As to displays, I have some huge 8 high flipdot 5x7 matrix display that
came from highway signs. I am prototyping a driver circuit, and I want
something impressive for them to display. Sorry no glowing glass, but
flipdots are pretty cool.

Tom Harris celephi...@gmail.com

On 20 April 2015 at 11:23, koolatron koolat...@gmail.com wrote:

Gastón,

Sure thing. I will post here when I am happy with the firmware!

The MCU is an atmega32u2 clocked at 16 MHz. It has a built-in USB
peripheral for communicating with a host computer.

Sea

On Sunday, April 19, 2015 at 5:09:23 PM UTC-7, GastonP wrote:

Very nice... I have bought 10 IV-4's just for this kind of thing.
If you decide to go open please share.

BTW... which processor are you using?

Gastón

On Sunday, April 19, 2015 at 8:00:45 PM UTC-3, koolatron wrote:

I actually designed and built a FLW clock out of IV-4/IV-17s; they’re
quite nice little tubes and currently still reasonably easy to get on the
e-site.

https://dl.dropboxusercontent.com/u/709108/iv4lw.JPG

And here’s a short movie of an older version of the clock “walking the
tree” as was mentioned earlier in the thread:

https://dl.dropboxusercontent.com/u/709108/iv4lw2_wordwalk.mov

Once I’ve finished up the software, I’ll open it up if there’s interest.

Sean

On Thursday, April 16, 2015 at 6:11:31 AM UTC-7, jrehwin wrote:

As the B7971’s are so expensive these days, perhaps we should look for
really large VFD’s. Or LED matrices.

I scored some huge two-character VFDs from an elevator panel refit,
along with several smaller 16-character ones that accept serial input at
600bps.

The IV-4/IV-17 ones are a good size and still affordable.

Noritake occasionally gives away some nice VFD doc matrix displays, too.

One of the important points in using them, as you already noted is to
look good, they need to have accurate spacing, so it sort of rules out
individual LED’s - which are really cheap.

You can build it up out of individual alphanumeric LED displays, which
are available in a bunch of large sizes (like the Evil Mad Science 5 letter
clock).

I'm also working on an ongoing project to use an old monoscope tube as
a character generator to display nicely formed characters on a small CRT.
This could be the basis for a 4/5/6LW
project, including some fun effects like stretching letters vertically
or horizontally, and moving them around. I'm on about the sixth redesign
(LT1172 switching regulator driving a CCFL
inverter with a voltage doubler) of the monoscope power supply at this
point.

I like the idea of a scrolling clock or FLW – these days micros are not
expensive. So it should not be too difficult to do a large scrolling clock
then the issue of four, five, six , sever or more scrolling words is not an
issue, especially if the matrices can be banked together.

Some of the PJRC boards have PLENTY of memory and CPU horsepower, and
they're small, cheap, and can be used with the Arduino toolset.

- John

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[neonixie-l] FLW Clocks

2015-04-15 Thread Tom Harris

Everyone on this list has heard of four letter word clocks. But a clock
with seconds has 6 digits. Has anyone ever made a six letter word clock?

Tom Harris celephi...@gmail.com

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Re: [neonixie-l] Re: FLW Clocks

2015-04-15 Thread Tom Harris

To answer my own question Evil Mad Science Labs have a five letter clock,
but it only displays random words, not walking the tree of word
associations like a real FLW clock.

Tom Harris celephi...@gmail.com

On 15 April 2015 at 20:47, Nick n...@desmith.net wrote:

I saw an Italian one a few years ago using B7971s...

Using the some of the smart sockets etc. available it'd really be quite
easy to make one...

Nick

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Re: [neonixie-l] Caught like Mars flies in a Klein bottle

2015-03-24 Thread Tom Harris

You can own one of Clifford Stoll's remarkable creations from
http://www.kleinbottle.com/

Quite inexpensive if you have ever tried scientific glassblowing.

Tom Harris celephi...@gmail.com

On 25 March 2015 at 09:05, jb-electronics webmas...@jb-electronics.de
wrote:

Topology at its finest -- I am going to show this to my maths professor
:-)

Jens

Am 24.03.2015 um 22:36 schrieb Quixotic Nixotic:

Yes, it's another Firesign Theater quote. But I am trying to work out if
this multiple Klein bottle could be filled with gas or not and if so, which
parts would glow? Answers on the back of a banknote of your choice please.

I can't wait for Nick de Smith to make me one, now he has the skillset.

John S
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Re: [neonixie-l] Caught like Mars flies in a Klein bottle

2015-03-24 Thread Tom Harris

You can't fill a Klein bottle with anything as there is no inside to fill.
Anymore than you can colour in a Moebius strip with two colours without
them touching.

Tom Harris celephi...@gmail.com

On 25 March 2015 at 08:36, Quixotic Nixotic nixci...@jsdesign.co.uk wrote:

I can't wait for Nick de Smith to make me one, now he has the skillset.

John S

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Re: [neonixie-l] A couple of my videos

2015-02-05 Thread Tom Harris

Morris,

The deflection waveforms are superb. Generating these would have been a
major job without microprocessors. I remember an old instrument that had to
generate sine cosine functions for driving a polar display on a CRO that
used vacuum photodiodes, lamps and rotating polaroids to generate the
functions.

Tom Harris celephi...@gmail.com

On 5 February 2015 at 22:48, Joe Croft cro...@gmail.com wrote:

Sweet clock, I take it you don't have it in your bed room hehe ;)

-joe

On Thu, Feb 5, 2015 at 4:40 AM, Morris Odell vilgo...@bigpond.net.au
wrote:

Electromechanical nixie clock:

http://youtu.be/WvHKyWSp20o
3 phase sawtooth deflection waveform for Sperry Radar clock:

http://youtu.be/BQ3ykfU2a2Y
Enjoy!

Morris

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Re: [neonixie-l] Re: Gigantic Flip-Dot Wall Display at the Consumer Electronics Show (CES).

2015-01-15 Thread Tom Harris

Gregebert, do you have anything on the web on your neon clocks?

Tom Harris celephi...@gmail.com

On 16 January 2015 at 07:47, gregebert gregeb...@hotmail.com wrote:

In the spirit of this group, a large array of NE-2 bulbs would be a neat
project. I've already used opto-triacs on my big clock; they should work
nicely for a multiplexed display.
If anyone is interested in sharing the effort to develop a 2-board
solution (1 board roughly 8 x 10 for the bulbs, the other for the AC
supply) then send me a private message.
It would be roughly a 10x24 matrix of bulbs for each board, and I'm
guessing a 4:1 multiplex rate would work.
The AC supply would generate a roughly +/- 170V square-wave, around 250Hz,
and would need to operate from 110-240VAC, 50/60Hz
Control would be from readily-available FPGA boards on Ebay.

I've seen NE2's available from China for a decent price when purchased
in-bulk.

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Re: [neonixie-l] Telecom lightning arrestor

2014-09-24 Thread Tom Harris

Yes modern ceramic arrestors are rated for KA! I expect my glass ones are
similar. But they are far nicer to look at than modern ones. We need more
components encapsulated in glass, modern ceramic are so boring.

I tested mine this eening, it has gone back to striking at the same
voltage as it did before I gave it a hard time!

Tom Harris celephi...@gmail.com

On 24 September 2014 17:51, Tidak Ada offl...@zeelandnet.nl wrote:

Such arrestors actually have to withstand kA's for a short discharge!
Look at your overvoltage protector you use (hopefully) for your computer
and peripherals. I have here a Belkin contact block that is guaranteed for
40,000 A.
Belkin says to compensate all equipment connected to it that will be
damaged in case of a surge voltage for life time (of the protector).
I once hat such a case and got a new contact block without troubles. There
was no damage to the protected equipment, only the surge protector died in
service.
More modern surge arrestors have a ceramic housing, so they aren't
spectacular.

eric

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*From:* neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] *On
Behalf Of *Tom Harris
*Sent:* woensdag 24 september 2014 2:21
*To:* neonixie-l@googlegroups.com
*Subject:* Re: [neonixie-l] Telecom lightning arrestor

More on the arrestor, I tried it this morning and it has got better
overnight, it just strikes at 290V, before it was not striking reliably at
300V. It must have been tuckered out. It looks like it is recovering slowly.

Tom Harris celephi...@gmail.com

On 24 September 2014 08:25, Tom Harris celephi...@gmail.com wrote:

Well I half-destroyed one with an overcurrent by connecting it to 300V AC
with a 150W lamp as a current limiter. It gave a bright red neon discharge
on both electrodes and a lovely pale blue space discharge for about 10
secs. Now it needs about 350V to fire with a 10K series resistor. I shall
test another one with a more moderate current and see how it lasts.

Tom Harris celephi...@gmail.com

On 24 September 2014 08:19, gregebert gregeb...@hotmail.com wrote:

I'm curious how long these devices would last if they were operating
continuously at a low current (just enough to get a visible discharge).

Despite being 'old technology', gas-filled arrestors are advantageous
because they have low capacitance and very low off-state leakage.

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Re: [neonixie-l] Telecom lightning arrestor

2014-09-23 Thread Tom Harris

Thanks, I'll check if it ionises the air by bringing it near a spark gap
just off arcing over, an excellent test for radiation, and far more
spectacular than discharging an electroscope as a demonstration of
radioactivity.

Tom Harris celephi...@gmail.com

On 23 September 2014 20:44, Tidak Ada offl...@zeelandnet.nl wrote:

Keep in mind most of these tubes have a radioactive doping for better
arcing. So don't break the glass!

eric

--
*From:* neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] *On
Behalf Of *Tom Harris
*Sent:* dinsdag 23 september 2014 0:57
*To:* neonixie-l@googlegroups.com
*Subject:* Re: [neonixie-l] Telecom lightning arrestor

I used 10K, but they are built to take a lot of current, so I could
probably drop it down. The electrodes are probably tungsten. I'll have a
photoshoot of the lot, as I ended up with a lot of different sizes. I might
go back and score the bakelite mounting clips as well.

Tom Harris celephi...@gmail.com

On 22 September 2014 21:34, Tidak Ada offl...@zeelandnet.nl wrote:

Hi Tom,

Nice find! Can you tell me the values of the resistor you placed in
series? I cannot read it from the photo.

eric

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*From:* neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] *On
Behalf Of *Tom Harris
*Sent:* maandag 22 september 2014 7:31
*To:* neonixie-l@googlegroups.com
*Subject:* [neonixie-l] Telecom lightning arrestor

Greetings,

Passed a derelict country railway station a while ago and went in for a
look. On the wall was a panel containing a few of these lightning arrestors
that were connected to the open wire lines that followed the track. They
light up nicely at 300V ac.

Tom Harris celephi...@gmail.com

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Re: [neonixie-l] Telecom lightning arrestor

2014-09-23 Thread Tom Harris

Tom Harris celephi...@gmail.com

On 24 September 2014 08:19, gregebert gregeb...@hotmail.com wrote:

I'm curious how long these devices would last if they were operating
continuously at a low current (just enough to get a visible discharge).

Despite being 'old technology', gas-filled arrestors are advantageous
because they have low capacitance and very low off-state leakage.

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Re: [neonixie-l] Telecom lightning arrestor

2014-09-23 Thread Tom Harris

Tom Harris celephi...@gmail.com

On 24 September 2014 08:25, Tom Harris celephi...@gmail.com wrote:

Tom Harris celephi...@gmail.com

On 24 September 2014 08:19, gregebert gregeb...@hotmail.com wrote:

I'm curious how long these devices would last if they were operating
continuously at a low current (just enough to get a visible discharge).

Despite being 'old technology', gas-filled arrestors are advantageous
because they have low capacitance and very low off-state leakage.

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Re: [neonixie-l] Telecom lightning arrestor

2014-09-22 Thread Tom Harris

Tom Harris celephi...@gmail.com

On 22 September 2014 21:34, Tidak Ada offl...@zeelandnet.nl wrote:

Hi Tom,

Nice find! Can you tell me the values of the resistor you placed in
series? I cannot read it from the photo.

eric

Greetings,

Tom Harris celephi...@gmail.com

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[neonixie-l] Flip Disc Displays on Ebay

2014-09-17 Thread Tom Harris

www.ebay.com.au/itm/291244635089

We found a box of them!

Tom Harris celephi...@gmail.com

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Re: [neonixie-l] Re: Flip Disc Displays on Ebay

2014-09-17 Thread Tom Harris

Each module has 7 elements/pixels, see picture on Ebay. I am selling 30
modules as a set, which will give you 6 lots of 5x7 pixels, enough for 6
characters. So it's actually a dot matrix of 7 x 30 pixels. Would make a
factastic clock, with the characteristic fluttering sound as the digits
change.

Actually we are still going through the pile, there are some PCBs about the
size of A3 paper for using these displays as a big matrix, and a huge demo
display the size of a wall that is so big it got left against the wall when
some pallet racking was put up, so we can't even get the crane in to lift
it out. There are probably also some driver boards, but all mixed up in 30
years worth of junk. I just stuck some on Ebay to see how they went. We
also have some single element flipdisc modules, which I have never seen
before.

Tom Harris celephi...@gmail.com

On 18 September 2014 03:15, 'threeneurons' via neonixie-l
neonixie-l@googlegroups.com wrote:

On Tuesday, September 16, 2014 11:57:01 PM UTC-7, celephicus wrote:

www.ebay.com.au/itm/291244635089

We found a box of them!

Tom Harris celep...@gmail.com

Is that your item ?

If so, does each unit have 6 flip elements ? Meaning it can be rigged as a
6 x 30 display ?

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Re: [neonixie-l] nixie-ish

2014-08-24 Thread Tom Harris

$450??? I have quite a few 8x5 panels about 14 high from a freeway sign. I
should put them on Ebay next time I need a holiday!

Mine have a reed switch behind the dot that reads the dot state and lights
a bank of LEDS so that it can be read in fog or at night. The LEDs are
those horrible green/yellow ones from the 90's that my mate who sells LEDS
refers to as phleghm colour :).

Tom Harris celephi...@gmail.com

On 25 August 2014 01:31, David Forbes dfor...@dakotacom.net wrote:

A tad price at $450.

I have one of these in its original bus mounting frame, but haven't gotten
it running. Needs new Sprague driver chips. I got it from an artist friend
- she had me set the dots to spell POEM for an art installation.

On 8/24/14 5:38 AM, H. Carl Ott wrote:

http://www.ebay.com/itm/271584824613

Would make a nice clock, but I think nixies make less noise when changing
state.

carl

Henry Carl Ott N2RVQhcarl...@gmail.com

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Re: [neonixie-l] Re: O.T.but...

2014-07-26 Thread Tom Harris

Even easier, all you need is a flat surface and a pen. Simply use a book to
hold the pen at about half the diameter of the cap off the surface.
Books work well as you can adjust the height simply by adding pages. Then
put several marks with the pin at different positions of the end of
the cap. Your centre is in the middle of the marks, which if they are close
together is easy to get. Simple.

Tom Harris celephi...@gmail.com

On 25 July 2014 19:42, petehand peteh...@gmail.com wrote:

Is THAT what the V-shaped thing is for? I'm indebted to you sir - I never
knew what it was for.

On Tuesday, July 22, 2014 10:39:42 PM UTC-7, Nixcited delighted wrote:

I use a fairly cheap device found in most UK hardware/tool shops as part
of a sliding rule set. In my case it included just the sliding square on
the left and the circle centre finder on the right. The middle piece is an
angle finder/setter.

You use the centre finder in exactly the way Nick described - place the
angle around your circle in several places and draw lines along the rule.
Where the lines intersect is your point. Punch it and drill.

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Re: [neonixie-l] Sperry radar clock now working!

2014-07-14 Thread Tom Harris

Very nice Morris. The last display like this I saw had a rotating yoke with
slip rings, so if yours has one the power transformer must be a real
howler. It sounds like 400Hz too.

Can't wait to see it completed.

Tom Harris celephi...@gmail.com

On 14 July 2014 19:02, Morris Odell vilgo...@bigpond.net.au wrote:

Hi all,

I've got the clock displaying time now. The video shows it upside down on
the bench so it's at a few minutes past 12. That howling power transformer
is a distraction, I'll have to wrap it in some sound absorbing material
especially as I like to add Westminster chimes to my clocks :-).

The next step is to put it all together and tidy it up!

https://www.youtube.com/watch?v=tL3840bE9Cs

Morris

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Re: [neonixie-l] Sperry radar clock now working!

2014-07-14 Thread Tom Harris

Hi Morris,

Yes I do, I follow you achievments with interest, where can I see pics of
the E1T clock?

Your display sounds complex, a thee phase scanning yoke! Why not just have
an X-Y vector display and drive that directly by the micro?

I do have a mate with a vacuum chamber (actually a commercial pressure
cooker with a vacuum pump) and I can get hold of some transformer varnish
as well. Want to give it a go? You have to bake it afterwards to get the
varnish to go off. Lot of work for a one off.

In your profession I would have thought that you would have access to a lab
with some sinister apparatus for preparation of specimens shall we
say...?

Tom Harris celephi...@gmail.com

On 15 July 2014 13:01, Morris Odell vilgo...@bigpond.net.au wrote:

Thanks Tom,

No it's a static yoke which is 3 phase delta wound and excited with
suitable waveforms generated by a micro. It's the original 900 Hz radar
power tranny that's the culprit.

BTW you may remember me as the fellow who once bought a E1T chassis from
you for experimentation. That ended up as a the learning experience nice 6
digit clock too!

Cheers,

On Monday, July 14, 2014 7:18:43 PM UTC+10, celephicus wrote:

Very nice Morris. The last display like this I saw had a rotating yoke
with slip rings, so if yours has one the power transformer must be a real
howler. It sounds like 400Hz too.

Can't wait to see it completed.

Tom Harris celep...@gmail.com

On 14 July 2014 19:02, Morris Odell vilg...@bigpond.net.au wrote:

Hi all,

I've got the clock displaying time now. The video shows it upside down
on the bench so it's at a few minutes past 12. That howling power
transformer is a distraction, I'll have to wrap it in some sound absorbing
material especially as I like to add Westminster chimes to my clocks :-).

The next step is to put it all together and tidy it up!

https://www.youtube.com/watch?v=tL3840bE9Cs

Morris

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Re: [neonixie-l] big tubes in action

2014-04-17 Thread Tom Harris

I visited a hydro power station in Wales which was a turbine between two
lakes, one high up a mountain. The turbine could be reversed and used to
fill up the upper lake at nighttime when demand was low but the nuclear
coal power stations were still generating. It was used to satisfy sudden
peak demands in load, like during half time in their soccer games when
everyone opened the fridge to get a beer or put the kettle on. I asked the
guide about this, he said that in the past they had difficulty maintaining
the grid during these peaks, so consumer behaviour (in the evening when the
industrial loads are off) can certainly make the grid notice.

Tom Harris celephi...@gmail.com

On 16 April 2014 17:25, Dalibor Farný dali...@farny.cz wrote:

I thought that lighting does a minor power consumption compared to
industry that runs 24/7, so switching our CFL/LED bulbs would not have
any effect ;-)
A number of people watching the same program is another thing, You are
right!

Dalibor

2014-04-16 2:15 GMT+02:00 Charles MacDonald cm...@zeusprune.ca:
On 14-04-14 12:14 PM, Dalibor Farný wrote:
this machine was somehow

connected to a powerplant and it was able to measure the increase in
power consumption :-D It would be absolutely not possible these days..

The local substation could probably get a signal if a lot of load was
turned
on or off. They have to measure the load to decide if they need to
switch
the source of supply.

These days though it is unlikely that a significant number of homes would
all be watching the same program.

In the states it is often reported that the water pressure drops during
the
commercial breaks on the main football game every year (the superbowl) as
folks put off going to the bathroom until the play has stopped on the
field.

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cm...@zeusprune.ca Just Beyond the Fringe
http://Charles.MacDonald.org/tubes
No Microsoft Products were used in sending this e-mail.

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Re: [neonixie-l] Re: dekatron computing [and other stuff]

2014-02-06 Thread Tom Harris

I sent some trigger tubes to the NMOC via my sister in law who lives
nearby, and the c***s at Bletchley made her pay the entry fee even though
she had a letter from me and the NMOC saying that she was delivering them
personally. She said that the BP people made her feel like she was trying
to get in without paying. Contrast that with the NMOC persons, who she
chatted with for an hour when she met an old DEC head, she still misses
working on DEC computers.

The NMOC should just cut the cord and go elsewhere. Maybe they could get
their snouts in the trough of government money, since at least they do
something with it, like rebuilding the oldest working digital computer in
the world. And if that isn't amazing, I don't know what is.

Tom Harris celephi...@gmail.com

On 6 February 2014 21:18, Alex ajlgr...@gmail.com wrote:

I went up and visited Bletchley in around October last year and, until I
got there, assumed the NMOC and Bletchley were one and the same. I parked
up in the only obvious parking lot and followed the large signs to the
entrance like a good little visitor. I paid £15 entry and another fiver for
a fancy souvenir book and wondered through the fairly small couple of
galleries Bletchley actually has - mainly a handful of Enigmas and a very
nice Lorenz, as well as a nicely rebuilt Bombe. They are very much what I
call National Trust style, which unlike the competing English Heritage
organisation, specialise in tours, gift shops and making everything into an
experience rather than being passionate about the items themselves.

After ending up outside and wondering where all the computers are, I
discovered that most of the buildings on the Bletchley site are privately
rented to various companies, there is also a selection or boarded up huts,
an open hut full or random Winston Churchill paraphernalia and another on
pigeon racing (I kid you not).

Finally, after reaching the outer extremes of the site, I find the
bletchley house where you can wonder through about 4 fairly bare rooms (the
upstairs is rented out) and then, right on the top of the site, the actual
Museum of Computing. This is a separate affair not even mentioned on
bletchleys map and is well worth a visit, £3 entry and more stuff then
Bletchley itself. Proper English Heritage style exhibits (piles of stuff
and little notices describing it rather than audio tours, tedious guides
who just tell you their opinions etc..

There is also a HAM radio station hidden on site, another separate affair.
They genuinely look taken aback when you find them and will keep you
talking for hours.

If I was running NMOC I would make a prompt exit and take Colossus with me.

- Alex

On Friday, 31 January 2014 00:15:20 UTC, johnk wrote:

Saw this link elsewhere:-

http://freelance.halfacree.co.uk/2014/01/disharmony-at-bletchley-park/

John K.

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Re: [neonixie-l] Re: Electrical Safety on Christmas in Years Gone By.

2013-11-26 Thread Tom Harris

I used to buy globes in an old style radio shop when I lived in England.
Each globe would be taken out of its package and tested in front of the
customer. I never bought tubes (valves to Brits) but there was an enormous
tube tester with every sort of socket including 4 pin. And he had a Nixie
clock in the front window that received the LF signal from Rugby.

Tom Harris celephi...@gmail.com

On 24 November 2013 03:03, John Rehwinkel jreh...@mac.com wrote:

Wow, a subject area I still have some interest in :)

And I as well!

I began collecting antique Christmas lamps in the 60's, and continued up
to about 1990.
Germany was a big producer in the 20's and 30's, and then moved to Japan.
The clear glass painted envelope lamps from Germany often used a carbon
filament.

We have wall mounted display cases for some of the more interesting and
rare lamps. And frequently decorate the tree with them.

That is a nice display, Jeff!

The local hardware store up until this year offered replacement C6 bulbs,
which pleased me. I don't see them out this year. This hardware store is
a wonderful relic from the past, with rows of little drawers all the way up
to the 22 foot high pressed tin ceiling. They still have and use their
old-style light bulb testers, including one for fluorescent tubes and
starters.

- John

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Re: [neonixie-l] Re: Nixie supplier for your projects

2012-07-30 Thread Tom Harris

Price?

On 30 July 2012 22:36, Vitaly Nart vitaly.n...@gmail.com wrote:

 New position for today 36 IN-18 ( one year of production, factory box)
 Free shipping.



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