Hi, I want to record audio from a piezoelectric sensor(mounted inside a cello) and playback the audio with effects(delay, overdrive, etc)
I'm a complete novice at this however.

I have a teensy4.0 on it's audio shield. How do I connect the piezo to the teensy? There are a lot of tutorials for effects and using audio from an sd card, but I don't know how to write audio to the sd card live.

Thank you!