Light Sensors

The

Components Needed

• Arduino Mega
• Light Sensor (e.g., LDR or light-dependent resistor)
• Resistor (optional, for voltage divider)
• Jumper Wires
• Breadboard
• Power Supply

Block Diagram

Circuit Setup

Connect the Light Sensor to Arduino Mega:

Instructions

Circuit Setup:

Connect the light sensor to the Arduino Mega as described in the circuit setup section.

Code Upload:

Open Arduino IDE and create a new sketch.

Copy and paste the provided Arduino code into the sketch.

Upload the code to the Arduino Mega.

Testing:

Open the Serial Monitor in the Arduino IDE (set to 9600 baud).

Observe the Serial Monitor for the light intensity values printed as sensor readings.

The Serial Monitor will also display whether bright or dim light is detected based on the defined threshold.

Applications

Notes

Ensure the light sensor is exposed to the light source you intend to measure.

Calibrate readings as needed based on environmental conditions and sensor placement.

Experiment with different resistors in the voltage divider to optimize sensitivity and range.