Daily Quest · 2026-07-07
Finish the wiring · difficulty 2 of 3
The little comms speaker that hums a steady tone stopped humming after a power surge cooked its wiring. You stripped it down to a bare buzzer and a loose microcontroller, so now it's just quiet parts in your lap. The code's already loaded and fine — you just have to wire the thing back together so it hums again.
Solve it in the free browser circuit simulator: no kit and no install needed. A new challenge every day at craftingtable.com/daily-quest; past days are in the archive.