I can’t id a tiny programmable synth/effect/audio process box I found online a while back. If I remember correctly you could buy a DIY kit or a ready assembled version. It was the approx size of a guitar pedal or smaller. It had a community where people make small programs for it to run like sample player, synth and effects etc. It looked really versatile in that sense. It had a white case but I think was optional.
I’ve searched day and night but can’t find it again. Any suggestions?