In the microcontroller era today, Arduino is more ... Here an LDR (Light Dependent Resistor) is used to measure the light level. The alarm system is triggered when a “Logic High (H)” level signal is ...

PHIL is a light tracking robot who is perfectly happy to do it the old-school way. PHIL consists of an Arduino Uno running a twin-servo motion platform, providing the sensor head with pan and tilt ...

The on-board 1-MΩ pull-up resistor calls for a very high-resistance LDR, but the most common ... The code is an Arduino project for the Digispark Attiny85 to turn on a light source when the PIR sensor ...