Looking at my plus keyboard cable, it's straight through, but looking at the handset cable I chopped up to make my test cable, it is (was) reversed. Yeah, that would be bad, since power and ground would then be swapped. So, yeah, don't use a handset cable and thanks for pointing that out.
I could do an ADB to USB adapter. The code I have now for ADB is for a device. The host side code is a bit different. But would you be better off getting an iMate? They still show up from time to time on ebay and lemswap. The board I'd use is about $15 + shipping, I'd then need to make a PCB plus components (maybe just an ADB connector?). But I couldn't imagine it being less than about $20-$25, which is slightly cheaper than what iMates seem to go for, but not by much. Plus the iMate is all in a nice case. So, something to think about.
If you're still interested, let me know. Would you be able to program it, or would you be using it as-is?
I could do an ADB to USB adapter. The code I have now for ADB is for a device. The host side code is a bit different. But would you be better off getting an iMate? They still show up from time to time on ebay and lemswap. The board I'd use is about $15 + shipping, I'd then need to make a PCB plus components (maybe just an ADB connector?). But I couldn't imagine it being less than about $20-$25, which is slightly cheaper than what iMates seem to go for, but not by much. Plus the iMate is all in a nice case. So, something to think about.
If you're still interested, let me know. Would you be able to program it, or would you be using it as-is?