Daily Quest · 2026-10-21

Salvaged Tuner Knob Won't Count

Finish the wiring · difficulty 3 of 3

A rotary encoder sits on your bench next to the dead radio tuner you pulled it from. The old housing was toast, but the knob and its little board checked out fine, so you're rebuilding the counter from scratch. The code's already loaded and good — you just have to wire the salvaged parts together.

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.