Photoresistor Sensor LDR 8mm 3Pin

Photoresistor Sensor LDR 8mm 3Pin

The Photoresistor Sensor LDR 8mm 3Pin is a compact photoresistor module designed to detect ambient light levels and convert them into electrical signals, Photoresistor Sensor typically ranges around 5kΩ to 10kΩ in bright light (10 Lux) and can rise to over 1MΩ in darkness. Featuring an 8mm light-dependent resistor (LDR), it changes resistance based on the intensity of light—low resistance in bright light and high resistance in darkness. This module includes three pins: VCC, GND, and OUT, making it easy to interface with microcontrollers such as Arduino or Raspberry Pi. It is commonly used in automatic lighting systems, solar garden lights, light-activated alarms, and smart home applications. Its small size and ease of use make it ideal for beginner and advanced electronics projects involving light detection and automation.

Features

• 8mm light-dependent resistor (LDR) for ambient light detection.
• 3-pin interface: VCC, GND, and digital OUT for easy connectivity.
• Wide operating voltage: Typically 3.3V to 5V, suitable for most microcontrollers.
• Digital output signal based on light intensity threshold.
• Adjustable sensitivity via onboard potentiometer.
• High sensitivity to visible light.
• Compact and lightweight design.
• Quick response to changes in light.
• Low power consumption, ideal for battery-powered systems.
• Compatible with Arduino, Raspberry Pi, and other development boards.
• Ideal for light-activated systems, alarms, and smart lighting controls.

Specifications

• Sensor Type: Light Dependent Resistor (LDR)
• Sensor Diameter: 8mm
• Operating Voltage: 3.3VDC to 5VDC
• Output Type: Digital (HIGH/LOW based on light threshold)
• Pin Configuration:
  • VCC – Power supply
  • GND – Ground
  • OUT – Digital signal output
• Light Resistance (Typ.): 5–10kΩ (in bright light)
• Dark Resistance (Typ.): >1MΩ (in darkness)
• Response Time: 20ms–30ms
• Board Dimensions: ~30mm x 15mm
• Mount Type: Through-hole (for LDR)
• Operating Temperature: -20°C to +85°C
• Compatibility: Arduino, Raspberry Pi, ESP32, etc.

Applications

• Automatic lighting systems.
• Smart street lighting.
• Solar garden lights.
• Light-sensitive alarms.
• Brightness control systems.
• Light-following robots.
• Security systems.
• Photography exposure control.
• Smart blinds and curtains.
• Educational projects.

Package Contents

• 1 x  Photoresistor Sensor LDR 8mm 3Pin