This is the last post about the mechanics. I promise. I have now a mechanical working keyboard with Kimber Allen contacts and the basic wiring. Next step are the electronics. I have them working since 2004 but it might be useful to do some rework with newer parts. I have to move from stripboard to PCB as well.
New holder waiting for contacts
Fitting the contacts and do some rework if needed.
Fitting the Kimber Allen contacts
Fitted and mounted with PCB
Fitted and mounted with PCB
Soldered and screwed
Contacts soldered and screwed
Putting it together
Contacts mounted with keyboard action
Some wires
First wiring to the shift register
Old scanner electronics from 2004
Old scanner electronic
And my first “keyboard” from 2004
First test keyboard
The new keyboard mechanic is working quite well with the old electronic. It is a lot of fun playing chords with the synthesizer. Next step is to think about the electronic. I want to get rid of the old stripboards and make some small PCB. Back then i used a ATmega8 and shift registers for keyboard scanning and a 16bit R2R ladder for DA conversion. Programmed in assembler. Maybe it is time to redo it in C and using a DA chip. I’ll give it a try.
