5mm LDR Light Dependent Resistor – Simple Analog Light Sensor for Electronics and Arduino Projects

🌞 5mm LDR Light Dependent Resistor – Simple Analog Light Sensor for Electronics and Arduino Projects

The 5mm LDR (Light Dependent Resistor) is a passive photoresistor that changes its resistance based on the intensity of light falling on it. In bright light, its resistance decreases; in darkness, the resistance increases. This behavior makes it ideal for analog light-sensing applications, such as automatic lighting, alarms, light meters, and DIY Arduino projects.

The 5mm round package makes it easy to integrate into breadboards or solder directly onto PCBs. It’s a popular choice for beginners and professionals who need a cost-effective and reliable solution for light detection.

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✅ Key Features:

• 📏 Size: 5mm diameter

• ⚙️ Operating Voltage: Works with standard voltage dividers for analog inputs

• 📐 Light Sensitivity: Resistance varies with light intensity

• 🔧 Resistance Range: From a few kilo-ohms (in light) to mega-ohms (in darkness)

• 🔋 Low Power Consumption: Passive device, no power supply required directly

• 🧰 Compatible With: Arduino, ESP32, Raspberry Pi, STM32, and general analog circuits

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🧰 Applications:

• Automatic light control systems (street lights, room lights)

• Light-sensitive alarms and security systems

• Solar-powered lights and garden lights

• DIY electronics and hobby projects

• Light meters and environmental monitoring systems

• Robotics and IoT applications requiring light level input

• Educational projects for learning about sensors and analog circuits

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🔗 Why Choose a 5mm LDR?

The 5mm LDR is a simple, reliable, and affordable component for analog light detection. It’s highly versatile, widely supported in tutorials, and works seamlessly with microcontrollers and analog circuits for projects requiring ambient light monitoring or control.

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📦 Package Includes:

• 1 x 5mm LDR (Light Dependent Resistor)

Note: This is an analog sensor and typically requires a voltage divider circuit for interfacing with ADC (Analog-to-Digital Converters) on microcontrollers.

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🔍 Keywords

5mm LDR Pakistan, light dependent resistor Arduino, LDR light sensor component, photoresistor for electronics, LDR light detection, analog light sensor module, Arduino light sensor DIY.