deskthority

Conversion finished! https://i.imgur.com/Yz9Fk2B.jpg I decided to repurpose the original debug button as a reset switch. The switch pin needed to be bent sideways along the pcb in order to avoid it getting grounded immediately on plug-in. The only other necessary modification was to short both enabl...

Disassembly of the latching switches https://i.imgur.com/GzOc2B6.jpg https://i.imgur.com/vAoNbuG.jpg The white cam track piece simply slides out. The wire also simply slides out of a hole through the slider. https://i.imgur.com/leCsDCd.jpg https://i.imgur.com/QxhaTtJ.jpg The space for the cam is pre...

Currently waiting on some teensy boards to arrive, but I believe the conversion should be a fairly simple controller replacement. I've already done an initial tracing to find where the rows and columns lead to on the main IC. https://i.imgur.com/9wqUmRQ.jpg Columns are input through the multiplexer ...

An NEC APC-H25 keyboard date stamped September 1986, very late production considering the original APC computer's release in 1982, by 1987 NEC would release the APC IV putting this unit nearly 3 generations after it's original design. https://i.imgur.com/VN1etmK.jpg https://i.imgur.com/ToJKBAE.jpg S...