Re: [neonixie-l] Raspberry pi interfacing with older gear

[Dylan Distasio]

I was surfing on Tindie tonight, and came across this which I think is what
you were asking for:

https://www.tindie.com/products/land_boards/rpio-tiny-2/
On Dec 31, 2015 11:01 AM, "Andy Tefft"  wrote:

> Thanks for the quick feedback, guys.
>
> I'll probably breadboard up a transistor for now, and a little converter
> like that can permanently go inline in my connecting cable even though I
> only need a single channel. It would be cool if someone made a breakout
> board for the pi that had an optional level converter on every (or even
> several) gpio output, that would be really useful for prototyping.
>
>
> On Wed, Dec 30, 2015 at 5:29 PM, David Forbes 
> wrote:
>
>> Andy,
>>
>> You can use an NPN transistor (2N3904 or 2N222A or whatever) and a couple
>> resistors to boost the Pi signal to 5V. Pi output through a 10K resistor to
>> Base, Emitter to Gnd, counter fed from Collector, Collector also tied to 5V
>> through a 1K resistor. Should work up to about 1 MHz.
>>
>>
>> On 12/30/15 2:54 PM, Andy Tefft wrote:
>>
>>>
>>> Initial quick tests are good with one exception - I had just connected an
>>> AVR output to one of the pins on the reset button on the counter and the
>>> AVR was able to toggle that output and reset the counter (pretty sure I
>>> was
>>> powering the AVR with 5V). This same trick does not work with the pi,
>>> presumably due to its puny little 3.3v-level outputs. Anyone have a
>>> standard, simple go-to for interfacing between old TTL circuitry and a pi
>>> or something like it?
>>>
>>>
>>
>> --
>> David Forbes, Tucson AZ
>>
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Re: [neonixie-l] Raspberry pi interfacing with older gear

[Andy Tefft]

Thanks for the quick feedback, guys.

I'll probably breadboard up a transistor for now, and a little converter
like that can permanently go inline in my connecting cable even though I
only need a single channel. It would be cool if someone made a breakout
board for the pi that had an optional level converter on every (or even
several) gpio output, that would be really useful for prototyping.


On Wed, Dec 30, 2015 at 5:29 PM, David Forbes  wrote:

> Andy,
>
> You can use an NPN transistor (2N3904 or 2N222A or whatever) and a couple
> resistors to boost the Pi signal to 5V. Pi output through a 10K resistor to
> Base, Emitter to Gnd, counter fed from Collector, Collector also tied to 5V
> through a 1K resistor. Should work up to about 1 MHz.
>
>
> On 12/30/15 2:54 PM, Andy Tefft wrote:
>
>>
>> Initial quick tests are good with one exception - I had just connected an
>> AVR output to one of the pins on the reset button on the counter and the
>> AVR was able to toggle that output and reset the counter (pretty sure I
>> was
>> powering the AVR with 5V). This same trick does not work with the pi,
>> presumably due to its puny little 3.3v-level outputs. Anyone have a
>> standard, simple go-to for interfacing between old TTL circuitry and a pi
>> or something like it?
>>
>>
>
> --
> David Forbes, Tucson AZ
>
> --
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> .
>
> For more options, visit https://groups.google.com/d/optout.
>

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Re: [neonixie-l] Re: Dot matrix display

[Quixotic Nixotic]

I heard of a guy who is sort doing the reverse - he is taking the four levels 
of neon dot intensity found on DMD displays and mapping these to different 
colours on an RGB LED matrix, to get automatic pseudo-colouring. I bet he knows 
how the drivers work inside out.

As the original displays get older and fail, more people are turning to the 
colour LED displays, where someone has laboriously mapped every animation frame 
in colours. Not cheap, just shy of $400 for one of these.

John S

On 31 Dec 2015, at 08:00, Tristan wrote:

> I started development of a clock using some similar displays (except 256x64 
> pixels). 
> 
> https://sites.google.com/site/tristansideas/electronics/pinball-display-clock
> 
> Sadly a lack of time has prevented me from finishing the project so far. They 
> can pretty much be driven from the SPI peripheral of most micros. I used an 
> MSP430 for testing. This allowed each row of display data to be shifted in 
> using one of the DMA channels with minimal interrupt/CPU usage just to latch 
> each row keep track of the number of rows. I was able to achieve 4 levels of 
> grey pretty easily. The chip on the dev board I used didn't have RAM to hold 
> the entire frame buffer so I was using an external SPI SRAM (also DMA 
> driven). This was not intended to be the long term design and I would use a 
> part with enough RAM on board.
> 
> I've been thinking of driving them from a BeagleBone Black. Simply because 
> the PRU's available would be capable of doing the real time processing 
> required. Trammel Hudson used this method to drive a Mac-SE display and only 
> minimal changes would be required to run a DMD.
> 
> https://trmm.net/Mac-SE_video
> 
> That's not to discourage the use of an FPGA. Even without one I was able to 
> exceed the 200Hz maximum using the MSP430 (they still seem to work at > 
> 200Hz). These displays do use a fair amount of power. They can get warm. They 
> also have a tendency to produce a high pitched whine when operating. They did 
> run in pinball machines in arcades pretty much non-stop but they do wear out 
> eventually. There are LED based replacements available now but that lacks a 
> certain something that you can only get from neon.

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[neonixie-l] High voltage power supply

[Vadim Selin]

Hi

I want to make a nixie clock by myself, but do not want to use a mc34063
for making high voltage power supply,  I want to use Atmega8 PWR and mosfet
and inductor for making 180 volt. Can you send me the
program for the AVR MCU of the AVR PWM based power supply
for nixie tubes ?
Thanks.

With best regards,
  Vadim Selin

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[neonixie-l] Re: All digits display pictures of 42 kinds of different Nixie Tubes.

[严泽远]

Hello everyone, please check the download link here:
http://www.nixieclock.org/?page_id=1289
If you have some high reolution pictures of nixie tube, please let me know 
if you want to share.
Thanks.

在 2015年12月30日星期三 UTC+8上午12:50:21，严泽远写道：
>
> Hello everyone, I'd like to show you some pictures of 42 kinds of 
> different Nixie Tubes, I took these pictures after I finish my Divergence 
> Meter project, some of these tubes are very rare, if you like high 
> resolution pictures of one of these tubes please let me know.
>
> B-5441 (Burroughs U.S.A.) Diameter：19mm
>
> B-5750 (Burroughs U.S.A.) Diameter：13mm
>
> CD66 (Rodan Japan) Diameter：19mm
>
> CD71 (Rodan Japan) Diameter：9.5mm
>
> CD81 (Rodan Japan) Diameter：13mm
>
> CD83P (Rodan Japan) Diameter：13mm
>
> CD90P (Rodan Japan) Diameter：9.5mm
>
> IN-8 (Melz USSR) Diameter：19mm
>
> IN-8 Type2 (Melz USSR) Diameter：19mm
>
> IN-8-2 (Melz USSR) Diameter：19mm
>
> IN-14 (Rovno USSR) Diameter：19mm
>
> IN-14 Type2 (Rovno USSR) Diameter：19mm
>
> IN-14 Type3 (Rovno USSR) Diameter：19mm
>
> IN-16 (Rovno USSR) Diameter：16mm
>
> IN-18 (Rovno USSR) Diameter：30mm
>
> LD-836 (NEC Japan) Diameter：12 x 16mm
>
> NL-812 (National U.S.A.) Diameter：21MM
>
> NL-821 (National U.S.A.) Diameter：19MM
>
> NL-841 (National U.S.A.) Diameter：19MM
>
> NL-901 (National U.S.A.) Diameter：19MM
>
> NL-5440A (National U.S.A.) Diameter：19MM
>
> NL-5440A Type2 (National U.S.A.) Diameter：19MM
>
> NL-5560 (National U.S.A.) Diameter：13MM
>
> NL-5859 (National U.S.A.) Diameter：13MM
>
> NL-5750 (National U.S.A.) Diameter：13MM
>
> QS16-12 (南昌 China) Diameter：16MM
>
> QS18-12 (新光 China) Diameter：18MM
>
> QS18C (新光 China) Diameter：18MM
>
> XN1 (HIVAC England) Diameter：19MM
>
> XN1 Type2 (HIVAC England) Diameter：19MM
>
> XN3 (HIVAC England) Diameter：19MM
>
> Z566M (RFT Germany) Diameter：30MM
>
> Z570M (RFT Germany) Diameter：19MM
>
> Z570M Type2 (RFT Germany) Diameter：19MM
>
> ZM1000 (PHILIPS Holland) Diameter：19MM
>
> ZM1000R (VOLVO Germany) Diameter：19MM
>
> ZM1010 (PHILIPS Holland) Diameter：19MM
>
> ZM1020 (Telefunken Germany) Diameter：19MM
>
> ZM1042 (TESLA Czech) Diameter：30MM
>
> ZM1080 (Telefunken Germany) Diameter：19MM
>
> ZM1082T (TESLA Czech) Diameter：19MM
>
> ZM1240 (SIEMENS Germany) Diameter：19MM
>
> This is the group photo with my new work: Divergence Meter, please note 
> there's an AA battery on the right for reference.
>
>
> Boxes of these tubes: 
>
>
> This picture will show you how to take these photos, a special board can 
> switch digit display controlled by IR remote to prevent the shaking if use 
> a button on board:
>
>
> 
>
>
>

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[neonixie-l] Re: All digits display pictures of 42 kinds of different Nixie Tubes.

[严泽远]

Hi Ron, please check the details of the board, I didn't draw the schematic, 
it's too simple for this application, software is simple as well, when I 
press button 0 of IR remote, MCU will pull-up Pin0 and pull-down other 11 
outputs, then number 0 of nixie tube will display.




在 2015年12月30日星期三 UTC+8下午10:38:05，blkadder写道：
>
> Those pics are fantastic.  I have to mirror what the others are saying, if 
> you have a zip with hi rez pics, that would be awesome.  I am also 
> interested in the board you used to take the pictures.  Could you elaborate 
> on how you constructed this?
>
> Many thanks.
>
> Ron
>
>
>

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Re: [neonixie-l] All digits display pictures of 42 kinds of different Nixie Tubes.

[严泽远]

Hi Paolo, yes I know B5092 but i have no chance to get one for collection, 
if you can take some pictures that will be good.
I'm planning to take some pictures of Top View Tubes, will share that with 
you all when it's finished.

About that small board, that's so easy to make, only one micro-controller 
and one IR receiver, ten 33K resistors, ten A42 transistors, you can check 
my blog for reference, same as my first QS30-1 nixie project, but don't 
need HC595, I/O pins of MCU connect to resistors 
directly: http://www.nixieclock.org/?p=36

Yan.

在 2015年12月30日星期三 UTC+8下午11:20:28，Paolo Cravero写道：
>
> Thank you for sharing the excellent collection of Nixies. In case B5092 
> and B5094 are not in your collection I would be glad to take pictures of my 
> specimens and share them with the world. Maybe others could contribute with 
> pictures of their tubes? For such a project, it would help to see the 
> circuit you used.
>
> Paolo
>
> PS: I am looking for a way to use an Arduino PWM pin to produce HVDC so 
> that I can build a single-digit clock without an external step-up circuit 
> (NE555-based being the simplest I have come across).
>
> 
>  Questa 
> e-mail è stata inviata da un computer privo di virus protetto da Avast. 
> www.avast.com 
> 
>  
> <#CABj2VaY78VT=2f3Pdz8gnK6BvT-BMOiL2-XkLF1LJxdADi02PQ@mail.gmail.com_DDB4FAA8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
>

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[neonixie-l] Re: All digits display pictures of 42 kinds of different Nixie Tubes.

[严泽远]

Hi guys, I'm preparing high res pics now, resolution should be 1x1500 
JPEG format, will let you know when it's finished.
It's a little difficult to take these photos, especially it's hard to 
highlighting of the edge of glass tube, I use two light boxes and two light 
screens, and a flash lamp for front lighting.
Another important equipment is camera remote controller, this will hold the 
same shooting range for each digits, tube and camera must not have the 
slightest move.
Camera and lens is important ofcourse, but Canon 5D Mark II with EF 100mm 
1:2.8L IS USM is very good at capture details of tube.
Just waiting for a moment, high res pics will be ready soon.
Yan.

PS: high res picture is so nice like this:

















在 2015年12月30日星期三 UTC+8上午12:50:21，严泽远写道：
>
> Hello everyone, I'd like to show you some pictures of 42 kinds of 
> different Nixie Tubes, I took these pictures after I finish my Divergence 
> Meter project, some of these tubes are very rare, if you like high 
> resolution pictures of one of these tubes please let me know.
>
> B-5441 (Burroughs U.S.A.) Diameter：19mm
>
> B-5750 (Burroughs U.S.A.) Diameter：13mm
>
> CD66 (Rodan Japan) Diameter：19mm
>
> CD71 (Rodan Japan) Diameter：9.5mm
>
> CD81 (Rodan Japan) Diameter：13mm
>
> CD83P (Rodan Japan) Diameter：13mm
>
> CD90P (Rodan Japan) Diameter：9.5mm
>
> IN-8 (Melz USSR) Diameter：19mm
>
> IN-8 Type2 (Melz USSR) Diameter：19mm
>
> IN-8-2 (Melz USSR) Diameter：19mm
>
> IN-14 (Rovno USSR) Diameter：19mm
>
> IN-14 Type2 (Rovno USSR) Diameter：19mm
>
> IN-14 Type3 (Rovno USSR) Diameter：19mm
>
> IN-16 (Rovno USSR) Diameter：16mm
>
> IN-18 (Rovno USSR) Diameter：30mm
>
> LD-836 (NEC Japan) Diameter：12 x 16mm
>
> NL-812 (National U.S.A.) Diameter：21MM
>
> NL-821 (National U.S.A.) Diameter：19MM
>
> NL-841 (National U.S.A.) Diameter：19MM
>
> NL-901 (National U.S.A.) Diameter：19MM
>
> NL-5440A (National U.S.A.) Diameter：19MM
>
> NL-5440A Type2 (National U.S.A.) Diameter：19MM
>
> NL-5560 (National U.S.A.) Diameter：13MM
>
> NL-5859 (National U.S.A.) Diameter：13MM
>
> NL-5750 (National U.S.A.) Diameter：13MM
>
> QS16-12 (南昌 China) Diameter：16MM
>
> QS18-12 (新光 China) Diameter：18MM
>
> QS18C (新光 China) Diameter：18MM
>
> XN1 (HIVAC England) Diameter：19MM
>
> XN1 Type2 (HIVAC England) Diameter：19MM
>
> XN3 (HIVAC England) Diameter：19MM
>
> Z566M (RFT Germany) Diameter：30MM
>
> Z570M (RFT Germany) Diameter：19MM
>
> Z570M Type2 (RFT Germany) Diameter：19MM
>
> ZM1000 (PHILIPS Holland) Diameter：19MM
>
> ZM1000R (VOLVO Germany) Diameter：19MM
>
> ZM1010 (PHILIPS Holland) Diameter：19MM
>
> ZM1020 (Telefunken Germany) Diameter：19MM
>
> ZM1042 (TESLA Czech) Diameter：30MM
>
> ZM1080 (Telefunken Germany) Diameter：19MM
>
> ZM1082T (TESLA Czech) Diameter：19MM
>
> ZM1240 (SIEMENS Germany) Diameter：19MM
>
> This is the group photo with my new work: Divergence Meter, please note 
> there's an AA battery on the right for reference.
>
>
> Boxes of these tubes: 
>
>
> This picture will show you how to take these photos, a special board can 
> switch digit display controlled by IR remote to prevent the shaking if use 
> a button on board:
>
>
> 
>
>
>

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[neonixie-l] Re: Dot matrix display

[Tristan]

I started development of a clock using some similar displays (except 256x64 
pixels). 

https://sites.google.com/site/tristansideas/electronics/pinball-display-clock

Sadly a lack of time has prevented me from finishing the project so far. 
They can pretty much be driven from the SPI peripheral of most micros. I 
used an MSP430 for testing. This allowed each row of display data to be 
shifted in using one of the DMA channels with minimal interrupt/CPU usage 
just to latch each row keep track of the number of rows. I was able to 
achieve 4 levels of grey pretty easily. The chip on the dev board I used 
didn't have RAM to hold the entire frame buffer so I was using an external 
SPI SRAM (also DMA driven). This was not intended to be the long term 
design and I would use a part with enough RAM on board.

I've been thinking of driving them from a BeagleBone Black. Simply because 
the PRU's available would be capable of doing the real time processing 
required. Trammel Hudson used this method to drive a Mac-SE display and 
only minimal changes would be required to run a DMD.

https://trmm.net/Mac-SE_video

That's not to discourage the use of an FPGA. Even without one I was able to 
exceed the 200Hz maximum using the MSP430 (they still seem to work at > 
200Hz). These displays do use a fair amount of power. They can get warm. 
They also have a tendency to produce a high pitched whine when operating. 
They did run in pinball machines in arcades pretty much non-stop but they 
do wear out eventually. There are LED based replacements available now but 
that lacks a certain something that you can only get from neon.

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