An open source OP-1 clone:

This could be a great study in UI for the OP1. As it is, with such wide focus, it seems to miss the point of the OP1’s buttons, screen, real encoders, keyboard, and zero latency, being so integral to the OP1 experience. Hard to wedge this anywhere between a tracker and a lightweight DAW, both already available for the Pi. Not to mention more experimental stuff…

This is my JAM!

recently started learning Kicad(pcb design) so I would love to work on this project.
I also use Raspberry pi’s for a million different applications around my home. So I am atleast knowledgeable about Pi’s. but im always into learning new skills/hobbies.

Im part of a group on facebook of DIY synth nerds (pusherman) who bulk order and ship PCBS to a small community of builders who love to build super dense PCB’s and then Bulk order esoteric parts. All in the name of building dank instruments for themselves to enjoy. Assuming we ever get to that point I imagine they will be happy to participate.

Raspi is such a great platform. I look forward to one day using this device as an Op1 Companion. As it currently stands I dump my op1 to my Rpi all the time. Imagine if the files I transfer from my Op1 to the Rpi are then further mangled, labeled, stored on a more software fully featured op1.

eesn is right about the hardware but I dont think thats insurmountable.

the metal case of the op1 will be hard though hmmmmm maybe a hammond or guitar pedal enclosure upside down.

Some thoughts I have on design would be to use mpr121 chip one per octave for a touch sensitive keyboard. Would be buchla(218) esq as I think that chip also allow for some amount of wiggling on the capacitive contact(think vibrato or effect send. ontop of just note on off)
or assuming someone has recommendation for a dank key switch. The Op1 is all custom molded(the buttons) so i think we need to avoid that and go for something simple like a common switch or capacitive contacts that come on a PCB manufactured faceplate. I recently got my kickstarter hyve pcbs ( and built them up yesterday. His design for the L and R channels so that it acts as a capcitive touch keyboard rotary effect is inspiring. the last image shows the keys layout with the L and R channel straddling the Gnd and your finger being the bridge. While I think we will be going for a far more digital design I still find this style of keyboard very inspiring.

Im mostly spit-balling right now But I look forward to contributing on this project. Ill hop on the disccord at some point and we can chat!

thank you for sharing.