LDR Module

🔹 LDR Module – Light Dependent Resistor Sensor, Digital & Analog Output

This LDR (Light Dependent Resistor) module is a simple yet effective light sensor for detecting ambient light levels. Featuring both analog and digital outputs, it allows for easy integration with microcontrollers like Arduino, ESP32, and Raspberry Pi for automatic lighting control, light intensity measurement, and darkness detection projects.

✅ Specifications:

• Sensor Type: Light Dependent Resistor (LDR) / Photoresistor

• Operating Voltage: 3.3V – 5V DC

• Output Signals:

  • Analog: Voltage varies with light intensity (0–VCC)

  • Digital: HIGH/LOW output with adjustable threshold via potentiometer

• Comparator: LM393 (onboard for digital output)

• Onboard Features: Power LED, Status LED, Sensitivity adjustment potentiometer

• Mounting: 4-pin header + mounting holes

• Dimensions: ~32mm x 14mm x 8mm

• Pinout: VCC, GND, Digital Out (DO), Analog Out (AO)

📦 Applications:
✔️ Automatic street light / garden light control
✔️ Light intensity measurement and logging
✔️ Darkness detection circuits
✔️ Solar tracking systems
✔️ Burglar alarm (light beam break detection)
✔️ Arduino and Raspberry Pi light sensing projects
✔️ Smart home automation (curtain control, lighting)
✔️ Educational STEM experiments