That sounds promising - what would be your platform of choice? I can see that something like Arduino Mega or a Teensy would have the required i/o. I have no experience of doing anything with a multiplexed display, it all seems like magic to me!
On Tuesday, 24 September 2019 21:47:24 UTC+1, GastonP wrote: > > Actually, the 8255 and an LS273, both through HV buffers, drive the > segments.Ports A and B of the 8255 drive the "upper" VFD anodes (+47V) > while Port C and the LS273 drive the "lower" VFD anodes (+47V). > The TL5812 drives the digit grids (one per digit) through a separate > serial shift register interface. > > It's a classic configuration for a multiplexed display, that can be easily > controlled by any modern microcontroller with 16 free pins without > recurring to specialized hardware. Just plain old parallel interface for > the segments plus a little bit-banging for the digits. If one wants to use > a processor with less free pins, it can be done too, but the complexity > grows. > > I just ordered a couple of this boards and am crossing my fingers... > > > On Wednesday, September 18, 2019 at 1:00:41 PM UTC-3, Keith Moore wrote: >> >> Richard, I have not yet done it, but I do plan to at some time. I got a >> few of these for various reasons (demo/display, etc.). I assume you have >> the detailed data / pinball instruction sheet like I do. If not, let me >> know. >> >> https://www.dropbox.com/s/bltgd4w4o9gonuy/Alvin_G_Display.zip?dl=0 >> >> >> My chops aren't good enough to just whip out the electronics to drive >> these, but I was planning on making a computer that does this eventually. >> It is an IEEE 8255 interface. I should be able to do it with an arduino. >> >> >> On Tuesday, September 17, 2019 at 11:11:26 PM UTC-4, Richard Scales wrote: >>> >>> I was wondering whether anyone has had any success talking to the Alvin >>> G PCA-003 boards that are available: >>> https://www.pinballspareparts.com.au/electronics/displays/pca-003.html >>> <https://www.pinballspareparts.com.au/electronics/displays/pca-003.html?fbclid=IwAR2epmNiBA7UkcB1H0XqUivyeQEMSmN1HWyIhaM-oZXsEYUmPsewaJ0FLSw> >>> I would be interested to hear from anyone that has managed to talk to >>> one or who might be able to provide any insight into how their interface >>> works. >>> I have a few coming my way and would like to see if I can make them talk >>> somehow. >>> Any pointers to information about interfacing requirements and protocols >>> etc would be most welcome. >>> >>> -- 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/ba3c5da7-c812-4c74-b893-9e88c926ec3e%40googlegroups.com.
