Daily Quest · 2026-10-15
Fix the code · difficulty 2 of 3
The little ready-tone buzzer on your bench is supposed to hum a steady note so you know the bench power's live. Right now it's dead quiet, which means you keep second-guessing whether the rail's actually on. Someone poked at the control code before you, and the code's got a bug in it — so you pull up the sketch to spot it.
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.