4-Pin Photosensitive Sensor Module – Light-Dependent Resistor (LDR) Control

🔆 4-Pin Photosensitive Sensor Module – LDR 🔆

The 4-pin photosensitive sensor module uses a Light Dependent Resistor (LDR) to detect ambient light levels and convert them into electrical signals. It provides both analog and digital outputs, making it perfect for Arduino, Raspberry Pi, and other microcontroller projects that require automatic light-based control systems.

✅ Technical Specifications:

• Sensor Type: LDR (Light Dependent Resistor).
• Operating Voltage: 3.3V – 5V DC.
• Outputs:
• Digital Output (DO) adjustable via onboard potentiometer.
• Analog Output (AO) proportional to light intensity.
• Interface: 4 pins (VCC, GND, AO, DO).
• Sensitivity: Adjustable with onboard potentiometer.
• LED Indicator: Shows digital output status.
• Module Size: ~32 × 14 mm.
• Approximate Weight: 5 g.

🔹 Key Features:

✔ Provides both analog and digital outputs.

✔ Adjustable sensitivity threshold via potentiometer.

✔ Built-in LED indicator for digital status.

✔ Easy to interface with Arduino & Raspberry Pi.

✔ Ideal for automatic light control projects.

📌 Common Applications:

• Automatic lighting systems.
• Light-based security or alarm systems.
• Smart home projects.
• Light-following robots.
• Educational electronics experiments.