As one of the early adopters of Arduboy I’ve enjoyed seeing the excitement around the creation of the mod chip. I even (with help from the community) managed my own epic repair.
While I could hop on the current flash mod buy - I sorta want to roll my own. Having an arduboy with a bundle of wires shoved into it scratches an itch of ‘make it mine’.
I know that the two chips are the W25Q128 & ATtiny85 - finding versions of these on digikey is easy enough, and I’m fairly confident I can find ones that will work. What isn’t clear in my searching around is the circuit layout. The flex circuit is two sided so it’s tough to figure out from an image. I’m sure @bateske has posted the actual schematic somewhere - but there are many revisions. If I’m going the DIY route - I’d really like to create a work-alike to avoid other issues.
I know there is Self made FX Mod-Chip (ProMicro supported) - but this is using an alternative Arduino.
Anyone else out there thinking of going down this path?