The light sensor is integrated behind the rear view mirror in a special mount, ... Posted in car hacks Tagged Audi, car, headlight, headlights, ldr, light sensor, pic, PIC12F629, PIC12F675, sensor.

Front end of the circuit is powered by the 5volt dc supply available from the usb port of the PC. When circuit is powered, the light sensor LDR (R2) resistance is low if there is sufficient light and ...