Mason jar with interactive LEDs that mimic fireflies on a warm summer night, realized with an Arduino-enabled ATTiny85, multiple power options and a sensor interface.
The piezo is nice, but hard to solder and a bit finicky. Add a footprint for a small tactile switch in parallel with it to allow for alternative triggering.
The piezo is nice, but hard to solder and a bit finicky. Add a footprint for a small tactile switch in parallel with it to allow for alternative triggering.