I think they are these displays: https://www.tubeclockdb.com/on-ebay/179-babcock-sp-431 The camera angle is not great but yea the displays are quite big, with like 2" high digits.
Good point with the socketed ICs. I might try that route first before soldering, but I'll also try to map out some of the input side to see what the actual logic is (if it counts or it's decoding or something). In the end though if the actual PCB itself is not some valuable vintage thing, I'd rather desolder the it for my own clock as I can get a better form factor. The whole thing is very big, a bit dirty, and is very heavy so it doesn't really make a good display piece as is. On Monday, 23 October 2023 at 12:24:40 UTC-4 gregebert wrote: > NICE FIND !!! > > Based on the size-comparison with the DIP ICs/resistors, these look like > large displays....maybe 2 inches tall ? If they really are that big then > you definitely want to make a gizmo, probably a clock, with these. It looks > like they are direct-drive, and since the IC's appear to be socketed you > might be able to remove them and do some individual segment testing to see > how healthy the displays are before you start the process of > reverse-engineering or redesigning a new board. > > > On Monday, October 23, 2023 at 7:03:05 AM UTC-7 leo oel wrote: > >> >> Hello >> I made a "Clock" on a similar one, only I have the model SP-494 and SP-492 >> https://twitter.com/leoloel/status/1662535750393495552 >> a few photos >> понедельник, 23 октября 2023 г. в 16:43:29 UTC+3, Adam Piórko: >> >>> It looks like VFD displays. If the "plus" is lit, the module seems to be >>> functioning properly. If you enjoy reverse engineering, you can try to make >>> a clock from this module. Two things need to be discovered. >>> >>> 1. How to send a digit? If it's a counter, it might be challenging. >>> Incrementing by +1 might be too slow, and digit changes will be visible. >>> 2. It's unknown if there's a reset to zero (reset function) - if >>> not, you'll have to add up to 999999. >>> >>> You can make a 24-hour clock out of it. There's no "AM/PM" - unless you >>> add it on the side or skip it. >>> >>> >>> niedziela, 22 października 2023 o 13:47:29 UTC+2 ZY napisał(a): >>> >>>> Pictures attached >>>> >>>> -- 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 [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/f43c36df-0bd3-46c1-8bb2-5ba2d4e08eecn%40googlegroups.com.
