UPDATE:

I've updated the information on github. It is pretty self-explanatory, but feel free to contact me if you have any questions.

https://github.com/KenH2000/Bally-Pinball-Clock

A few years ago I built a pinball clock (discussed above) using an Atmega328.

Basic parts needed:

* Atmega328 IC (aka Arduino)
* RTC module (clock keeps time when not powered on)
* Nixie Tube power supply (optional, supports original plasma displays)
* Small stripboard
* 20 pin .156 female J1 connector and female pins
* 7805 Voltage regulator
* 2 momentary push buttons
* 2 LEDs
* 2 220 Ohm resistors
* 1 10k Ohm resistor
* 2 10 uF capacitors
* 2 22 pF capacitors
* 16 MHz clock crystal
* DC power jack
* 12V/1A plug-in power supply
* misc electronics -- wire/headers/solder

You plug the board into a Bally 6-digit display, and it shows the time.

I'll post the build details on my github page (give me a few days to get the documentation written).

If someone wants an affordable, fun DIY project, you can build the whole thing for about $25.

https://github.com/KenH2000?tab=repositories
clock (resized).JPGstuff (resized).jpg

Very cool project, I look forward to whatever extra details you publish.

Just wondering if there was any reason you didn't use a socket for the SD card board?
Just thinking about if one should fail.
I have the same board on my retro chip tester and that sits just in a socket so it can be removed if needed.

Finally have found some time to make my displays.
Bought myself 4 micro SD cards today, been to the hardware and got my double sided tape.
I'm cautious so I tested the 5 SD card readers in my retro chip tester so I know they are all good before I solder them in.
The alignment tool is 3D printing now and if all goes well by the end of tonight I will have 5 new displays to fit to my machine.

My wife comes back from the UK on Monday after being away for 7 weeks and when she left I had a tatty non-functioning Star trek pinball machine and hopefully by Monday night it will be all singing and dancing with it's new Geettoh sound card and these new colour classic score displays. (Probably shouldn't tell her how much I spent doing this though)

Probably...no.
Take her out to dinner instead.

First display made and test fitted to the machine. The displays are only taped in place at the moment.
I think I will get some foam weather strip and put it around the edge of the display as it sits further back than the original displays and that will stop the light leaks if you are standing on the side of the pinball and looking at the displays.
Don't ask why the match says 71, that's another glitch I haven't got to yet. I haven't decided if I will keep the ball count and credit display as a VFD or replace it yet, although I did buy a new display for it so I can replace it when the original one dies.

new display (resized).jpg

Why hijack Alan's thread when you could start your own? He's trying to sell a product, and if you want to compete, maybe start another thread?
Seems kind of back handed to show off your build on another guys bread and butter idea

Huh?

This is one of Alan's kits I was simply showing off that I was happy with that.
I can only assume you misread my post and thought I was showing off something I had built myself from scratch, not one of Alan's kits.
If anything I am advertising I'm happy with his product.

Sorry for the misunderstanding, apologies

It looks really good with what I'm assuming is the stock plasma credit/match display.

EDIT: Never mind. I see that you said it was the stock credit/match display. Still -- looks really good with it

I like the headers for the SD module, I wanted to do that on mine, but my local electronics shop didn't have any.
Just installed the forth display into my machine, just one more to build.
Keep up the great work.

Alan, these displays are awesome! Very well done!!

I'm starting a retheme of a supersonic, to a supersonic 2.0, so I'll be in touch soon. I want it to be super stellar!