EDIT 2: I think, through complete chance, I’ve found the problem. I changed my programmer from AVR ISP mk II to AVR ISP and I’ve had a lot more success, not finished but making progress!
So on recommendation from a forum member, I got myself one of these DIY 8x8 matrix kits to drive a set of 7 segment displays. I’ve hooked everything up like the example (“LCDemo7Segment”) in the LEDControl library instructed but the displays only show 8s and I can’t seem to make them do anything different.
I believe I’ve identified the cathodes and anodes correctly in the image below, [EDIT: Imgur link here] C1 being cathode 1, therefore digit/column 1, A1 being row 1 or segment A. Please correct me if I’m wrong!
So I hooked one of my displays up to C1 for the cathode, and the segments up to A1-7, but they’re always on, no matter what I try. Can anyone see the error I’m making and help stop me pulling my hair out?