The TRRS jack connection between the #Teensy and MCP23018 IO expander was one of the last puzzles I resolved. On breadboard I never got #I2C to work via the jack cable.
Eventually, I noticed that the plug didn't fully reach all four connection points! The extra bit of plastic "collar" on the connectors was preventing the tip from reaching all the way. With the help of a colleague, we figured out that this was the exact problem and cut off the extra plastic.
I finally got the electronics moved into the enclosure! This took more tinkering, fiddling and thinking than I had thought it would. It's a really tight fit for the electronics, it feels like the enclosure design isn't made for handwiring and assumes very specific part sizes.
But it works!
Here is an entire post typed on my very own #handwired split #keyboard! It's not finished, but all letter keys are now working.
The biggest challenge for me now is to figure out how to wire everything together inside the enclosure. There's not a lot of space and I don't have many good ideas on how to it neatly.
I'll figure something out though (I hope).
Finally calling this done! Say hello to the HellSplit a hand-wired, asymmetric 40% split #ortholinear keyboard with vertical column stagger and two rotary encoders. Powered by a pair of Raspberry Pi Pico's #RP2040 and #KMK firmware
#mechanicalkeyboards #splitkeyboard #ergo #otho #mechkb #splitkb #pipico #raspberypipico #40percent #handwired #circuitpython @circuitpython @RaspberryPi @rpimag
Handwired keyboard question:
As I was using my keyboard, suddenly a during a keypress (in the "row" of two keys in the middle) the entire column is being triggered (and flickering). I checked the connections on the keys but I could not find any shorts.
What could this be? Should I resolder everything just to be sure?
Finished my new keyboard! it’s an evolution of my old keyboard with some function keys and media keys moved to the top right so I stop pressing mute instead of ctrl! It is a little taller than I like but the design I layered so I think I can shave off at least 5mm without too much hassle (probably more!)
#3dprinted #3dprinting #olkb #handwired #handwiredkeyboard #ortholinear #ortholinearkeyboard #joescotto #circuitpython #kmk #mechanicalkeyboard #mechanicalkeyboards #polymaker #prusament
Following the failure of my #cyberdeck project, I decided to extract the 3d-printed, hand-wired mechanical keyboard I hand wired and turn it into a standalone jobby. Here’s some before, during and after shots. Just waiting on the USB-C breakout so I can have the cable come from a more sensible direction.
#keyboard #keyboards #mechanicalkeyboard #mechanicalkeyboards #3dprinted #3dprinting #handwiredkeyboard #handwired
@laumann 
Andy Warburton ❌❌❌
Michal 
Jan Antoš