RE: [neonixie-l] Re: B7971from PolyPaks in Lynwood, MA

Don’t try to clear a mechanical short electrically. The areas that generally short are the ends of the diagonal and vertical cathodes. They are significantly heavier than the wire welds that attach to the pin and you will either destroy that part of the tube or possibly the backplane

Re: [neonixie-l] Re: B7971from PolyPaks in Lynwood, MA

Yes, I bought some 7971 tubes from PolyPaks right after they were surplused from the NY stock exchange displays. I don't recall the price but it was likely 3 orders of magnitude cheaper. I have 4 in use presently in one of Ray Weisling's FLW displays. Was fortunate to get one of his boards from

Re: [neonixie-l] Re: B7971 DUSTOFF Board Interest

Yes of course! Currently, it will immediately select the closest airport based on longitude and latitude data, but it is very easy to adjust the code to select a particular airport ID. I can help with that as needed. The current code for TAF/METAR is attached for reference. If purchased, I will

[neonixie-l] Re: B7971 DUSTOFF Board Interest

I'd be interested! Is the METAR and TAF feature standard? I assume the airport ID is customizable? On Friday, December 4, 2020 at 8:51:43 PM UTC-5 Mahdi Al Husseini wrote: > Hi all, > > I am thinking about producing another batch of five B7971 clocks/displays > (without tubes), and would like

Re: [neonixie-l] New clock project with R|Z568M nixies

New to the group so I'll try my best to help. You could consider twisted wire pairs for both i2C wires, and for the HV and HV ground. The rest of them Signal and ground, twisted wire pairs. That could help reduce the EMI. Something to also try is the shielded cable David mentioned, just for the

[neonixie-l] B7971 DUSTOFF Board Interest

Hi all, I am thinking about producing another batch of five B7971 clocks/displays (without tubes), and would like to know who might be interested. Video of the clock/display in action: B7971 Dustoff IoT Board - YouTube These new boards are

Re: [neonixie-l] New clock project with R|Z568M nixies

Could you insert two-core screened cable for the HV and HV gnd in a daisy chain setup, and reduce the amount of noise finding its' way into the I2C bus? David On Fri, 4 Dec 2020 at 23:36, newxito wrote: > I couldn't find a cat6 cable that was thin and flexible enough for this > project. So I

[neonixie-l] For Sale: Jeff Thomas NixiSat CYLINDRICAL clock

Jeff made only 10 of these. To say they are scarce is an understatement. Six beautiful, huge Z5680s in a one-of-a-kind case. Cylindrical NixiSat Operational as of last use. Needs backup battery. Working on getting pictures. Unmodified. Software

Re: [neonixie-l] Elfin Rodan MG-17G

These are technically nixie tubes that light up seven segments like a later LED display would. I have some calculators with them and some brand new ones like you have. I haven't used them for anything yet but the two calculators I have are neat. One even runs on four C-cell batteries!!!

Re: [neonixie-l] Re: B7971

Robert you might be able to bounce the tube with some padding around it and unshort the shorted segments. It's been done before. One trick is to tape it to a broom handle so you can force the entire tube against something like a stack of paper and get good force evenly distributed without

Re: [neonixie-l] Digest for neonixie-l@googlegroups.com - 12 updates in 1 topic

Clarke, pictures of individual segments lit up would be sufficient, no need to go too far. 180V with a 20K resistor should be adequate for illustration. I've not had a tube go bad on me (yet) but I have had the occasional one with cross illuminated segments (that I couldn't unstick, even with some

Re: [neonixie-l] Digest for neonixie-l@googlegroups.com - 12 updates in 1 topic

Test advice anyone? Voltage like 180 and measure ma on each segment? Anode resistor value? Photo of the tube with all segments lit up and total current? On Fri, Dec 4, 2020, 2:44 AM wrote: > neonixie-l@googlegroups.com >

Re: [neonixie-l] Re: B7971

I got my first board from Poly Paks sometime in the late 1970’s. Probably paid about $4 if I recall. One tube had shorted segments. I was about 15. Then in 1979 I decided to build a clock and bought three boards from Meshna Electronics. After I assembled that, I decided I would get spare

[neonixie-l] Re: Ecaterina Nixie clock project

Dear All , I am still looking for some Dolam LL-555 , Burroughs B-50113 , National NL-50113 Nixie tubes . Please let me know if you have such tubes . Thank you very much and wish you a nice weekend ahead ! Bogdan On Wednesday, September 9, 2020 at 3:21:19 PM UTC+3 Bogdan Paduraru wrote: > >