[neonixie-l] Re: Divergent Nixie clock designs
On Tuesday, June 5, 2018 at 6:14:58 AM UTC-7, GastonP wrote: > > Nice design, Mike >What was the function of the microphone in the lower part of the > shcematic? It goes to the connector and to a pin called X+ but I couldn't > find what's after that. > Gastón > There's a ring of LEDs around digits, where the lights do a 4-chl chase pattern. The signals that control that are XB0 thru XB3. Those signals are connected to the LED cathodes. All the anodes (for those LEDs and NOT the digit LEDs) are connected to X+. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/bd45dcb7-155a-4516-a678-04fd923e8b39%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Re: Divergent Nixie clock designs
On Monday, June 4, 2018 at 10:38:35 PM UTC-7, gregebert wrote: > > Long live PALASM ! I used CUPL a few times in the late 1980's. > > Were you able to program your device at home ? Most of the tools back then > were not free, and out-of-reach for hobbyists. > I remember sneaking into the lab during lunch hour to program EPROMs. > During the 80's, I had the keys to work, so I had free run of the equipment, after hours. I used that equipment on my senior project, and wrote my college papers on the company's CP/M computer in Wordstar. I think I got good grades on my reports, not for the content, but because the margins lined up on both the left and right side. The company had Tektronix development systems for working on microprocessors. An 8002 and a 8550. School had a lab full of HP 64000s, which were always occupied. Both the HP and Tektronix units cost well in the 10's of 1000s of dollars. By the mid-80s, however, emulator pods, that plugged into an IBM PC, started to become popular. Those sold in the $2K to $5K range. By ~1990, the IC makers started selling evaluation boards, for only a few 100 bucks. I picked up a Motorola HC05 EVM board for under $500, and it worked well as a development platform. Of course, now I use AVR tools, that cost less than $35. I own a programmer than can do MACH devices, and it cost me in the ballpark of $200, back in the early 90s. I haven't used it in years. Haven't erased an EPROM, or quartz windowed uC (usually an HC05-C8) in over 20 years. Don't drop a ceramic quartz windowed 22V10. They break in two, when they hit the floor. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/f51320d5-3d3b-4ce4-9271-892ed5833aa1%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Re: Anita Mk9 restoration
Yes, I was also thinking about the differences in the driving conditions for these dekatrons, and the possibility of adding, or changing, the driving conditions. /Martin On Tuesday, 5 June 2018 23:20:23 UTC+2, Jon wrote: > > Hi Roland, > > Good to see you here. Can you say anything about the guide pulses in the > Anita (resting bias voltage, amplitude, duration etc)? The GS10C and GS10D > differ in these parameters too, not just the maximum current. Perhaps that > is also the thinking behind Martin's question too :) > > Jon. > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/d5178df0-8248-4219-b15c-31f4653a5577%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Re: Anita Mk9 restoration
Hi Roland, Good to see you here. Can you say anything about the guide pulses in the Anita (resting bias voltage, amplitude, duration etc)? The GS10C and GS10D differ in these parameters too, not just the maximum current. Perhaps that is also the thinking behind Martin's question too :) Jon. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/945435aa-3ff1-4302-aca2-da86f01e6cbb%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Re: Anita Mk9 restoration
Hi, Can someone please send me the complete circuit diagrams for these Anitas, or point me to somewhere where I can download them? I’d like to have a look at the circuit surrounding the GS10D. /Martin -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/c8e32dd4-e142-4604-bff4-943641a42d0d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Re: Anita Mk9 restoration
I do have the strange feeling that I am looking for the St Graal ! However I would like to publically say that I do really appreciate all the efforts you do to help me. Regards, JP -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/b5c48566-8381-4819-bbe6-416613da970f%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Re: Anita Mk9 restoration
Hi JP, Mike and Jon, I have several GS10D tubes which just work great in my Anita's. At the moment I've got a MK8, MK9 and MK12 restored to 100% working condition. I've now got four working GS10D tubes out of 16 tubes total. Three of them are in the machines, one is waiting for my other machines to be restored... (three MK8 and another MK12) But to be honest, I'm afraid that within 10 years a few more tubes will be faulty... That is why I warned JP, just don't trust used or new in box tubes. Most sellers can't test them. Nigel once pointed me to this forum once, and I've asked the same question as JP. I also just wanted to buy a (few) good GS10D. But since I have running machines already, a good tube needs a good home. And that is the MK9 from JP :-) I really hope someone here can help him! That GS10D is key in these machines. It is the 3.4KHz clock divider, it is all about timing in those Anita's. The clock setting mark-skip ratio is very important. If it's not set to the right mark skip ratio your machine will start to make errors. I've tuned down the clock frequency of my MK8 to see how low I can get. I had to do this with an external clock source to remain the mark time and just make the skip time bigger... If I remember correct I could get to about 2,8 KHz. But the machine becomes really unstable then... So I bought an GS10C to try. But this tube won't spin at all. It glows at just one pin. No movement at all... The current trough the tube is too high for that GS10C I think. Funny to note, the current trough the GS10D is also outside the specs of the tube... Jon pointed me to a GS10E which I bought. Still have to test that one... Regards, Roland -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/d5be2d45-f634-4678-869f-b16478cbc9a7%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Re: Anita Mk9 restoration
I'd broadly agree with Mike, though a touch more optimistic. Although there is definitely a problem with fast dekatrons dying in storage, the frequency of dead tubes varies significantly from one model to another, and GS10D are far from the worst offenders. A quick look at the records of the GS10D that have come my way over the years indicate 8 dead out of 24 total. I am reasonably picky about buying these tubes so perhaps the sample is skewed a little - maybe assume 50/50 in the general case. JP - you have mail. Jon. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/fc9a86fd-f05c-4e8b-b736-328d7eece124%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[neonixie-l] Re: Divergent Nixie clock designs
Nice design, Mike What was the function of the microphone in the lower part of the shcematic? It goes to the connector and to a pin called X+ but I couldn't find what's after that. Gastón On Tuesday, June 5, 2018 at 2:15:41 AM UTC-3, threeneurons wrote: > > I've made a clock using a CPLD, the little brother of the FPGA: > > https://threeneurons.files.wordpress.com/2018/06/mach210_clk.pdf > > AMD MACH210. It was made quite a while ago. I guess MACH210 chips are > vintage now. > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/8ded9195-934d-42b7-90e2-ec98be765ecf%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
