Daily Quest · 2026-11-05
Fix the code · difficulty 2 of 3
You built a little ready-tone buzzer to tell you when your solder iron's warmed up, but it just sits there in silence. You loaded the sketch yourself, so it's your own bug to find. The code's got a mistake in it somewhere, and you've got nothing but time until the iron heats up anyway.
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.