Thank you for sharing this explicit info. Are you the person that explained how to depoison a Nixie by running a higher-than-normal amperage current during several hours? I had a Nixie-reading overdose so I remember the facts but not the authors :-(
I didn't buy the PIR sensor of the PV Electronics kit because I didn't find any real-size picture of the sensor, and it looked quite big (and aesthetically ugly). At least I couldn't imagine any way to have the PIR sensor concealed anywhere... However I would like to include one somehow in my RPI clock because I think it would very important for the tubes lifespan. El viernes, 5 de enero de 2018, 17:56:55 (UTC+1), gregebert escribió: > > My 18-tube IN-18 clock has been running for over 2 years now; the date is > displayed on 8 tubes in MM.DD.YYYY format, and those are basically static. > Time is on the other 6 in HH:MM:SS format, so not all of them are fully > cycled. Each night, at 11PM, the clock does a depoisoning routine for 1 > hour, then shuts off. In the morning, if we want the clock on, there's an > ON button I made from a 'Tomorrowland' souvenir pin. This clock was > inspired by the IN-18 clocks in the 2015 movie. > > > - all tubes that are cycled 0-9 multiple times during the day are > simply shut off > - all tubes that cycle 0-6 multiple times during the day are cycled > 6-9 for 1 hour. > - all tubes that are static during the day are cycled 0-9. I should > have put some smarts in the FPGA code to skip the digit that was displayed > that day > > So far, no tubes show abnormalities. One tube has a slight dark region at > the very bottom of a few digits, and I've been watching that very carefully > fir the past 6 months. So far, it's not degrading any further. Someday I > will retrofit out the FPGA and replace it with a RasPi, and fix the > depoisoning routine and add a PIR sensor. Yeah, someday..... > > > The RasPi-based 7971 clock uses a PIR sensor, so it's mostly off except > when I turn over in my sleep or walk into the room. I do plan log the > runtime for each segment of each tube, down to the second, and balance-out > the usage. I know it's overkill but I like the programming challenge. > > My big clock (pictured in my google icon) has been up for over 4 years, > and has static display on the tubes with no depoisonong. 2 have died, and > it took awhile to depoison a third one. > -- 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/a9efd138-382c-442a-9601-ce32b6ffa471%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
