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- 20 Jun 2022, 00:46
- Forum: Workshop
- Topic: Repurposing a Psion MC400 keyboard
- Replies: 12
- Views: 4514
Re: Repurposing a Psion MC400 keyboard
just managed to get a USB-MC400 keyboard working thanks to Frank Adams' Teensyduino sketch - the MC400 keyboard matrix is unique in that the On/Esc key has 2 dedicated lines (i.e. not shared with any other keys) to ASIC2 which is the custom chip that handles power on/off for the MC. Of the 18 pins ...