🔆 The LDR (Light Dependent Resistor) is a photoresistor whose resistance varies with the intensity of light. It decreases in resistance as light increases and increases when it gets darker. This simple yet powerful component is widely used in electronic projects to detect ambient light levels and automate lighting or control systems based on brightness.
- ✅ Specifications:
- Type: Light Dependent Resistor (LDR)
- Operating Voltage: 3.3 – 5V
- Dark Resistance: >1MΩ
- Light Resistance: ~10kΩ (at approx. 10 Lux)
- Response: Analog gradual response to light
- Response Time: 20–30ms
- Sensor Head Diameter:
- Terminals: 2 (Resistor type)
🔹 Key Features:
✔️ High sensitivity to light variations
✔️ Simple to interface with Arduino and other MCUs
✔️ No special circuitry required
✔️ Compact size for embedded projects
✔️ Ideal for night lights and smart ambient systems
📌 Common Applications:
- Automatic lighting systems
- Night detectors for security systems
- Light level measurement in science kits
- Arduino/ESP32 light sensing projects
- Smart environment controls
🔸 Product Weight:
Product Weight: 1g