4 ms·
It's an exercise in simplicity. Adding an Arduino is a little against the spirit.
by monochromatic 9y ago
It's an exercise in simplicity. Adding an Arduino is a little against the spirit.
- rocky1138 9y agoCan you explain how a speaker with a square wave would move the diode? I'm so confused.
- jacquesm 9y agoSawtooth, not a square wave. Hook the speaker up to some kind of frame, glue a small hinge to the cone, hinge to an arm that's anchored relatively close to the speaker, diode at the far end of the arm in a tube so the light is directional, instant scanner :)