RESISTOR READER

Pick bands by hand, or point your camera at one.

— Ω

select bands

Tap a band on the resistor, then choose its colour below.

Bands

Editing band 1 — first digit

Camera

Lay the resistor on a plain background, line it up inside the dashed guide, and capture. Then tap each band left to right on the frozen photo — the app reads the colour under your finger.

Camera needs HTTPS or localhost to work (browser rule). Auto colour reading depends on lighting — every detected band can be corrected from its dropdown.