A Particle Argon, using data from a pair of piezoelectric elements, locates a falling puck as it falls down a "Plinko"-style pegboard.

A Particle Argon waters a plant based on moisture in soil, while a camera attached to an ESP32 posts jpegs to an Adafruit Dashboard.

Do you have messy roommates that you constantly have to clean up after, this project might be for you.