Re: [neonixie-l] Arduino-based FLW

[Adam Jacobs]

Think about the requirements for your project before you start working on a
design. :)
Is power consumption a concern? 4 B7971's will draw a lot of current if
direct-driven.
Do you want the tubes as bright as they can be? direct-drive gives you lots
of brightness.
Is tube-life a concern? This is trickier, but it seems to be fairly well
agreed that multiplexing extends tube life (25% duty cycle means 4x more
effective lifetime) UNLESS you overdrive them to make them brighter (closer
to the brightness of direct driven) in which case, you shave life according
to how much you overdrive the tubes.

I think that your plan to develop the software against the common anode
16-segment LED's is a great one. Once you have the code working, you can
come back and start figuring out how to plug your arduino into some nixie
driving IC's instead of LED driving IC's. If you really think ahead, those
IC's that David mentions below will probably drive LED's as well as nixies
(I've never used those chips.. check your datasheets).

As far as multiplexing each segment in the nixie... Why? I think that this
is needless complexity without any clear value.

-Adam

On Tue, May 15, 2012 at 3:46 PM, David Forbes  wrote:

> On 5/15/2012 3:21 PM, Matthew wrote:
>
>>
>> 2. I'm planning to code the LED version as closely as possible to the
>> final
>> tube version, so will be multiplexing them. Looking at Ray Ws design, it
>> looks like the digits are multiplexed, with only one driven at a time...
>> could/should/shouldn't I multiplex the individual segments too? Not sure
>> if
>> the tubes would be bright enough?
>>
>>
> Matthew,
>
> I have an early FLW board, which was not multiplexed. I think it would be
> a better choice to do than multiplexing, for both tube life and code
> simplicity.
>
> I'd recommend that you use common DIP-packaged parts for the board. The
> 74HC595 8-bit serial shift register and SN75468 100V 7-way high voltage
> driver are low-cost, readily available parts that would be easy to use and
> program.
>
> I'd also recommend that you go with John Taylor's tiny power supply module
> unless you care to get into power supply building, in which case Nick
> DeSmith's design is an excellent choice.
>
> Using the above parts will ensure that you spend most of your time working
> on software rather than hardware.
>
> --
> David Forbes, Tucson, AZ
>
>
> --
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>
>

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[neonixie-l] Re: mikes new board

[westdave]

 

 

 

-Original Message-
From: westdave 
To: neonixie-l 
Sent: Tue, May 15, 2012 12:40 pm
Subject: mikes new board


mike's new board ,a no microprocessor approach,to nixie/dekatron clock,

there is a new kid on the nixie block ,the three neurons nixie clock is what 
ever you need it to be , a quick project or you can spend weeks on it ,adding 
things on, 
designed to be driven by a 9 vac (1 amp)  transformerd wall wart and timed at 
60hz,is the easiest configuration , and uses the dekatron pendulum as part of 
the timing circuit, however 

a 12 volt dc switching power supply may be used ,if you go this way there is no 
60hz to run the dekatron part of the clock so a 60hz faker has to be made (from 
a lm555) and added on. also a 1 Hz clock single must be found ,recommended are 
ds1306, xtal osc at 1hz, 
also you can add a GPS mod (EM406a) 5 volts dc input GPS 1 pps output ,in  ttl 
. for about $40 and have a second that will not drift,i have a few of these set 
for the same second and they do not drift apart

The cosmos chips are real cheap and the 5 nixie drivers can also be purchased 
very reasonably (this is where most of the power goes)


learning to use my shop vise to squash the 20 pin header on to the 20 wire 
rainbow wire and trim with a scissors, was easy, 
admittedly working with the raw wires on the other the end of the header takes 
some time 
stripping and tinning but it lets you use any type of tube (and socket) you 
want and space them any way you want 

i like to add two plus minus tubes (flashing a +- every .5hz) instead of colons 
making a set of 8 nixie tubes also an add on (two 220k resistors and a mpsa42 
xsistor and two anode resistors aprox 10k depending on the nixie tubes used)

the switches have no clocking inputs(they just read an add on pulse so you 
might have to push it 59 times to set the mins 12 times for the hours

 , and a hold switch will have to be added to sync the seconds exactly.

another add on is the leading zero (two 220k resistors and a mpsa42 xsistor)
and
 just to add an extra layer of fun the first run of boards need some reworked,  
to work,this has been carefully worked out by mike and might hake an extra 30 
mins to go over, four  wires and two diodes (in4814)are the FIX,

the board has many discreet parts mostly to run the dekatron pendulum
many types of dekatron tubes are supported
needs a Taylor 1363 hv power supply to work,just plugs in (sweet)
other stuff, the diodes are all common 1n400x(7)  1n4814 little glass jobs
19 of the resistors are one value 22k,6 transistors are mpsa 42 one mpsa92 and 
one mpsa05,make sure the 1uf is 100 volts or more&that 4 are 250 volts
Davester sez ,this one has it all

 

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Re: [neonixie-l] Arduino-based FLW

[David Forbes]

On 5/15/2012 3:21 PM, Matthew wrote:


2. I'm planning to code the LED version as closely as possible to the final
tube version, so will be multiplexing them. Looking at Ray Ws design, it
looks like the digits are multiplexed, with only one driven at a time...
could/should/shouldn't I multiplex the individual segments too? Not sure if
the tubes would be bright enough?



Matthew,

I have an early FLW board, which was not multiplexed. I think it would be a 
better choice to do than multiplexing, for both tube life and code simplicity.


I'd recommend that you use common DIP-packaged parts for the board. The 74HC595 
8-bit serial shift register and SN75468 100V 7-way high voltage driver are 
low-cost, readily available parts that would be easy to use and program.


I'd also recommend that you go with John Taylor's tiny power supply module 
unless you care to get into power supply building, in which case Nick DeSmith's 
design is an excellent choice.


Using the above parts will ensure that you spend most of your time working on 
software rather than hardware.


--
David Forbes, Tucson, AZ

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[neonixie-l] Arduino-based FLW

[Matthew]

I'm one of the seemingly many folks that got stung by Zetalink, having paid 
for two FLW kits a few years ago and never receiving them. Life's too short 
to cry over spilt milk... but have finally decided to do something with the 
tubes I bought at the time - 4 B7971s and 4 ZM1350s - so have decided to 
embark on making my own Arduino-based FLW.

Although I'm fairly new to electronics, having really just built a few 
clocks based on the TubeHobby kit, I am a programmer by day so I'm 
reasonably confident with the software side of it. So I plan to start 
building the prototype based on some common anode LED starburst displays 
which I have - I figured they are at least logically the same as doing it 
with the tubes.

With that in mind:

1. Once the code is done and working on LEDs (it may be quite some time, 
given the trials of life...), is anyone interested in helping with circuits 
to drive the high voltage tubes? Am hoping to come up with a fairly easy to 
build design that can be open sourced along with the code. I have the 
schematics for Ray Ws design if it's any help.

2. I'm planning to code the LED version as closely as possible to the final 
tube version, so will be multiplexing them. Looking at Ray Ws design, it 
looks like the digits are multiplexed, with only one driven at a time... 
could/should/shouldn't I multiplex the individual segments too? Not sure if 
the tubes would be bright enough?

Feel free to infer as much cluelessness in me as seems appropriate :) But 
any tips, advice etc much appreciated...

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Re: [neonixie-l] Re: German Customs Delaying Packages !!!!

[Dalibor Farný]

the same in Czech republic. We have some new rules here (VAT for packages
above $22), and when it took place, the packages are delayed several weeks
:-( our fu*king EU :-(

Dalibor

2012/5/15 Sven Killig 

> On March 12th, John Taylor's HVSP ($13.95) and a Teensy++ board with some
> accessories ($48.83) were shipped to me. The former reached me on March
> 26th, the latter on April 26th costing €7 import tax, taking 6.5 weeks 8-O
> @#$§ customs!
>
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Re: [neonixie-l] Re: Homemade thermionic valves

[Dalibor Farný]

it is a blowhose.. search for blowhose in google (pictures..)

Dalibor

2012/5/15 jb-electronics 

>  Can anyone help me with this video?
> http://www.youtube.com/watch?v=3FN9J4zgsgk
>
> What is the thing he mentions at 6:55? I did not quite catch it.
>
> Jens
>
>
>  The only trouble is that he has so many special equipment I think most of
> us are not fortunate enough to have at their disposal... But the techniques
> are explained very well, there is so much to learn!
>
> Jens
>
> You are welcome! The best thing is that he still makes new tubes/videos.
>
> On Tuesday, May 15, 2012 7:40:22 PM UTC+1, Jens Boos wrote:
>>
>>  This is amazing! Thanks for sharing!
>>
>> Jens
>>
>> Hi there, well, if you like videos about homemade tubes, chec out this
>> guy. He makes all sorts of tubes and he explainst the individual steps
>> really well.
>> http://www.youtube.com/user/**glasslinger/videos
>>
>> On Thursday, May 3, 2012 3:25:47 AM UTC+1, William Lee wrote:
>>>
>>> In case someone in the group didn't see this, I thought people might be
>>> interested in some homebrew tube making.  Pretty cool stuff!
>>>
>>>  --
>> You received this message because you are subscribed to the Google Groups
>> "neonixie-l" group.
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>> msg/neonixie-l/-/PL-enBhTPR8J
>> .
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>> googlegroups.com .
>> For more options, visit this group at http://groups.google.com/**
>> group/neonixie-l?hl=en-GB
>> .
>>
>>
>>  --
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[neonixie-l] Re: German Customs Delaying Packages !!!!

[Sven Killig]

On March 12th, John Taylor's HVSP ($13.95) and a Teensy++ board with some 
accessories ($48.83) were shipped to me. The former reached me on March 
26th, the latter on April 26th costing €7 import tax, taking 6.5 weeks 8-O
@#$§ customs!

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[neonixie-l] mikes new board

[westdave]

mike's new board ,a no microprocessor approach,to nixie/dekatron clock,

there is a new kid on the nixie block ,the three neurons nixie clock is what 
ever you need it to be , a quick project or you can spend weeks on it ,adding 
things on, 
designed to be driven by a 9 vac (1 amp)  transformerd wall wart and timed at 
60hz,is the easiest configuration , and uses the dekatron pendulum as part of 
the timing circuit, however 

a 12 volt dc switching power supply may be used ,if you go this way there is no 
60hz to run the dekatron part of the clock so a 60hz faker has to be made (from 
a lm555) and added on. also a 1 Hz clock single must be found ,recommended are 
ds1306, xtal osc at 1hz, 
also you can add a GPS mod (EM406a) 5 volts dc input GPS 1 pps output ,in  ttl 
. for about $40 and have a second that will not drift,i have a few of these set 
for the same second and they do not drift apart

The cosmos chips are real cheap and the 5 nixie drivers can also be purchased 
very reasonably (this is where most of the power goes)


learning to use my shop vise to squash the 20 pin header on to the 20 wire 
rainbow wire and trim with a scissors, was easy, 
admittedly working with the raw wires on the other the end of the header takes 
some time 
stripping and tinning but it lets you use any type of tube (and socket) you 
want and space them any way you want 

i like to add two plus minus tubes (flashing a +- every .5hz) instead of colons 
making a set of 8 nixie tubes also an add on (two 220k resistors and a mpsa42 
xsistor and two anode resistors aprox 10k depending on the nixie tubes used)

the switches have no clocking inputs(they just read an add on pulse so you 
might have to push it 59 times to set the mins 12 times for the hours

 , and a hold switch will have to be added to sync the seconds exactly.

another add on is the leading zero (two 220k resistors and a mpsa42 xsistor)
and
 just to add an extra layer of fun the first run of boards need some reworked,  
to work,this has been carefully worked out by mike and might hake an extra 30 
mins to go over, four  wires and two diodes (in4814)are the FIX,

the board has many discreet parts mostly to run the dekatron pendulum
many types of dekatron tubes are supported
needs a Taylor 1363 hv power supply to work,just plugs in (sweet)
other stuff, the diodes are all common 1n400x(7)  1n4814 little glass jobs
19 of the resistors are one value 22k,6 transistors are mpsa 42 one mpsa92 and 
one mpsa05,make sure the 1uf is 100 volts or more&that 4 are 250 volts
Davester sez ,this one has it all

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[neonixie-l] Re: Homemade thermionic valves

[marcin]

A shielded ball bearing? Ball bearing with metal or plastic shields on
both sides. Designed to keep dirt out of the balls and the grease in.
Here the ball bearing works as a rotating pressure seal. Neat. BTW, I
am a proud owner of a spherical audion and Flemming's valve by Ron.
Marcin

On May 15, 9:27 pm, jb-electronics 
wrote:
> Can anyone help me with this video?http://www.youtube.com/watch?v=3FN9J4zgsgk
> What is the thing he mentions at 6:55? I did not quite catch it.

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Re: [neonixie-l] Re: Homemade thermionic valves

[jb-electronics]

Can anyone help me with this video? 
http://www.youtube.com/watch?v=3FN9J4zgsgk


What is the thing he mentions at 6:55? I did not quite catch it.

Jens


The only trouble is that he has so many special equipment I think most 
of us are not fortunate enough to have at their disposal... But the 
techniques are explained very well, there is so much to learn!


Jens


You are welcome! The best thing is that he still makes new tubes/videos.

On Tuesday, May 15, 2012 7:40:22 PM UTC+1, Jens Boos wrote:

This is amazing! Thanks for sharing!

Jens


Hi there, well, if you like videos about homemade tubes, chec
out this guy. He makes all sorts of tubes and he explainst the
individual steps really well.
http://www.youtube.com/user/glasslinger/videos


On Thursday, May 3, 2012 3:25:47 AM UTC+1, William Lee wrote:

In case someone in the group didn't see this, I thought
people might be interested in some homebrew tube making.
 Pretty cool stuff!

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Re: [neonixie-l] Re: Homemade thermionic valves

[jb-electronics]

The only trouble is that he has so many special equipment I think most 
of us are not fortunate enough to have at their disposal... But the 
techniques are explained very well, there is so much to learn!


Jens


You are welcome! The best thing is that he still makes new tubes/videos.

On Tuesday, May 15, 2012 7:40:22 PM UTC+1, Jens Boos wrote:

This is amazing! Thanks for sharing!

Jens


Hi there, well, if you like videos about homemade tubes, chec out
this guy. He makes all sorts of tubes and he explainst the
individual steps really well.
http://www.youtube.com/user/glasslinger/videos


On Thursday, May 3, 2012 3:25:47 AM UTC+1, William Lee wrote:

In case someone in the group didn't see this, I thought
people might be interested in some homebrew tube making.
 Pretty cool stuff!

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Re: [neonixie-l] Re: Homemade thermionic valves

[kay486]

You are welcome! The best thing is that he still makes new tubes/videos.

On Tuesday, May 15, 2012 7:40:22 PM UTC+1, Jens Boos wrote:
>
>  This is amazing! Thanks for sharing!
>
> Jens
>
> Hi there, well, if you like videos about homemade tubes, chec out this 
> guy. He makes all sorts of tubes and he explainst the individual steps 
> really well.
> http://www.youtube.com/user/glasslinger/videos
>
> On Thursday, May 3, 2012 3:25:47 AM UTC+1, William Lee wrote: 
>>
>> In case someone in the group didn't see this, I thought people might be 
>> interested in some homebrew tube making.  Pretty cool stuff! 
>>
>>  -- 
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>
>  

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Re: [neonixie-l] Re: Homemade thermionic valves

[jb-electronics]

This is amazing! Thanks for sharing!

Jens

Hi there, well, if you like videos about homemade tubes, chec out this 
guy. He makes all sorts of tubes and he explainst the individual steps 
really well.

http://www.youtube.com/user/glasslinger/videos

On Thursday, May 3, 2012 3:25:47 AM UTC+1, William Lee wrote:

In case someone in the group didn't see this, I thought people
might be interested in some homebrew tube making.  Pretty cool stuff!

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[neonixie-l] Re: Homemade thermionic valves

[kay486]

Hi there, well, if you like videos about homemade tubes, chec out this guy. 
He makes all sorts of tubes and he explainst the individual steps really 
well.
http://www.youtube.com/user/glasslinger/videos

On Thursday, May 3, 2012 3:25:47 AM UTC+1, William Lee wrote:
>
> In case someone in the group didn't see this, I thought people might be 
> interested in some homebrew tube making.  Pretty cool stuff!
>
>

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