Methods to Programm new pedals?

[AeonKen]

What methods exist to program new pedals? Can one use puredata or maxMSP?

[Randall (Admin)]

There are various ways of developing LV2 plugins.  Here's a thread with some good pointers:
https://forum.mod.audio/t/lv2-101/9736/3

I don't know of any MAX LV2 plugin, but you could certainly run MAX on pi-Stomp and patch in the audio to Jack.