https://www.youtube.com/watch?v=fkI-F7aqs3cI I enjoy playing the C-system chromatic button accordion, which is different then diatonic-button accordions ("button boxes"), piano accordion, and bayan (B-system) accordion. See my links for a better description of what a C-system accordion is.I wanted to leverage my comfort with that keyboard layout with an instrument more designed for electronic music. There are some MIDI button accordions available (Roland V-accordions have a button model) but I wanted something more compact and abstracted and under $500.The right hand side of this instrument has 65 "Cherry-Mx" style mechanical keyboard switches with round key caps. The left-hand side has a 2-axis analog joystick and some buttons. So far I am using the joystick for pitch modifications and volume modifications and the buttons for switching octaves and waveforms
Gateron Clear Keyswitch - Plate Mount - Linear
This is a cherry MX clone. lightest spring I could find. I also tried some cherry MX silvers that fit my plate better.
round Cherry MX key caps
these were intended for a steam-punk QWERTY keyboard. I sharpied some of them black to make the keyboard layout easier.
One per key to prevent ghost notes
I had this laser cut at my local metal shop. I used 16 gauge which is too thick for the Gateron switches so I ended up having to thin the tabs. CAD drawings can be found on the github page
Hey folks, here are a couple more pics. For the one of the back plate, this is 1/8 steel scrap that I had. I like the patina. From left to right you have
USB for MIDI / power supply
1/4 MONO line-level audio out
Joystick. vertical axis makes the controller louder / softer. Horizontal controller bends pitches
Four Red control buttons. (well 3 because the bottom one already broke. No more cheap switches for me!) They are:
cheap-ass broken button
Change pitch bend between entire instrument mode or last note played mode
change wave form
Two LEDs that initially showed which of the 5 octaves was selected, from one (bottom blinks twice) , 2 (bottom blinks once), 3 (no lights), 4 (top blinks once) and 5 (top blinks twice). I disconnected them because the blinking was distracting.
There is also a close up of the keys, where you can see the round Cherry MX key caps I am using for the buttons. There is not really a pattern to what letters go to what switches other then the C-G in the middle. The black keys are just white keys with sharpie.
You can see how tight I am for space on the back. Im leaning towards making this model MIDI only and building a second prototype with a little more room.