In this experiment we are going to use a element called photoresistor. This sensor allows us to interact with the external environment, through intensity of light. The photoresistor is based on light ...

Light-dependent resistors (also known as photoresistors, photocells, or LDRs) are sensors that decrease their resistance as the amount of light that they’re exposed to increases. Essentially, the LEDs ...

How It Works: The project measures the light level in your study area using a photoresistor. If the light is bright enough—above a threshold of 650—the robot eyes on the OLED display "wake up," blink, ...

[over9k] used his Arduino to set up a laser trip wire. The laser is mounted along side the Arduino, reflects off of a mirror, and shines on a photoresistor that interfaces via a voltage divider. The ...