Woohoo!
regack, can this board utilize the expansion capability of the GH60, so:
1. No separate USB connector is required
2. No controller is required.
If I remember correctly, only 20 switches could be connected? Can we use I/O expander to increase this number or something similar? My electronic knowledge is highly limited as evident.
Ahh, uhh, you know, I hadn't really thought of that. I'll have to evaluate how it would be connected. Honestly, I haven't really paid much attention to how the expansion pads on the GH60 are supposed to function. Is that info buried in the thread somewhere? Otherwise I can look at the schematic again and figure out what it's doing.
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I looked at the GH60, and I see only 4 IO pins on the expansion, which isn't going to net 20 keys. I must be missing something, but putting an IO expander on the keypad, that's an idea. There's an SOIC package for the MCP23018 that might fit somewhere, I'll look at it.