Genius!
Look at my collection and tell me I couldn't use a few.

I’m in for a 7-digit kit.

PM sent!

I’ll test the displays in Xenon. Besides Medusa, which you already tested, that’s the only Bally I currently have set up.

I have three classic Sterns set up that I will test: Star Gazer, Quicksilver and Freefall.

I should have flyers for the entire classic Stern lineup, and I’m building a WinXP computer so I can try my HP 4760 scanner for additional art. Some of the Stern flyers aren’t as nice as the Bally flyers were.

I have best luck using a screwdriver tip, just a bit wider than a pencil tip. Somewhere between 600-700 degrees is probably best.

Received the kits yesterday. The package was beat up pretty badly, but it doesn’t look like anything was damaged.

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Good call. I don’t like locking ramps on connectors larger than 10 or 12 pins anyway. I’ll do what you did and save the locking headers for Williams boards.

I’m currently building my first display and will test it in Quicksilver, Star Gazer and Freefall.

I like this feature. I thought I would have to delete the fonts off the SD card that I didn't want to use.

Quick update on 1st display build: I didn't have much time to work on it today, but I was able to finish it and test it in Star Gazer. I forgot to short header pins 11 and 12 so no millions digit, but the splash screens worked correctly, scoring worked correctly and the HSTD before 3rd ball worked correctly. I'll give another update once I've corrected the millions digit and tested it in the other two games.

How does the system know what fonts are on the SD card? If I add a custom font, does it get cataloged such that if I delete it later it causes problems?

Update: Built two more displays today. The pin 11-12 short works as expected for the millions digit on classic Stern, so that's fixed. I had a problem with one of the FPC socket locks. I was trying to pop it open to install the display cable and it broke off. Fortunately, I was able to install the cable and lock it with the broken piece, but just wanted people to know these are delicate and care should be taken when unlocking them.

I finished assembling the displays and tested them in Star Gazer, Quicksilver and Xenon.

The 7-digit displays work perfectly. The credit/match display works perfectly in Xenon, but not in the classic Sterns. In the Sterns, the splash screen would come up, but would not clear, no matter if the display was set for 6-digits, 7-digits or credit/match.

I haven't tried the new firmware yet, I'm still using the original SD card content as shipped.

Upgraded the firmware, but unfortunately, no change to the credit/match behavior.

Ran the grabber utility and sent you the logfile.

Glad you have a test bench for Sterns now.

Now.... I have some good news and some bad news.

The good news is I tested the firmware update in Star Gazer and it worked perfectly. There is a slight delay between the splash screens clearing on the score displays and the CMBIP, but after that everything works normally.

The bad news is the new firmware doesn't work in Quicksilver and Freefall. They both exhibit the same behavior -- none of the splash screens clear. With the previous firmware the score displays clear and work properly. I'll run grabber and send you logfiles.

False alarm everyone. I was a dumbass and forgot leaving original displays in the game causes them to malfunction. I unplugged the remaining displays and the color displays work perfectly in both Quicksilver and Freefall.

The setting button broke on one of my ESP32 boards. I ordered some buttons hoping it won't be too difficult to replace. Also ordered a spare board based on the name stamped on the metal housing. Hopefully, I ordered the right one.

Unfortunately, no. However, I've also thought about using 7-digit displays in a 6-digit game. Maybe Alan could code an option to fill blank digits with an image (like the splash screens). You could choose to have each blank digit be a different image or all the same. Or you could have all digits be blank except for the 7th.

My friend is in the process of restoring a Dolly Parton, which is a 6-digit game. I thought it would be cool to use the 7-digit displays and have the 7th digit be a picture of her face.

Alan, have you thought about creating an option to display an image on blank digits?

Actually, you understood me correctly - add a feature that allows you to put an image in place of blank digits. But both features would be good.