These large AlfaZeta 7-segment flip displays do look similar to the ones I had been using, but turns you control the AlfaZeta ones with only two wires and reverse the polarity of them to get them to flip. Unfortunately, this makes the standard boards created here incompatible with them. I've got some thoughts on how to make it work as well, but going to require a different PCB layout. You should check out Rachel's video of how she got these working with a relays.