LDR 10-12 mm Light Dependent Resistor

Input and Output

• Input: Light falling on the LDR alters its resistance.
• Output: In a voltage divider circuit, the output is a variable voltage that corresponds to the light intensity, which can be read by a microcontroller or other electronics.

Physical Characteristics

• Dimensions: Diameter of 10-12 mm.
• Material: Typically made of a semiconductor material sensitive to light.
• Weight: Lightweight and compact, easy to integrate into various projects.

Technical Specifications

• Resistance Range: Can range from several megaohms in darkness to a few hundred ohms in bright light.
• Response Time: Reacts quickly to changes in light intensity, typically within milliseconds.

Additional Features

• No Direct Power Needed: Operates by changing resistance in response to light, with no direct power required for the LDR itself.
• Easy Integration: Simple to use in a voltage divider circuit for easy measurement of light levels.

How to Use

1. Set Up the LDR: Place the LDR in a voltage divider circuit by connecting one lead to a voltage supply and the other lead to a fixed resistor.
2. Connect to Microcontroller: Wire the junction between the LDR and the resistor to an analog input pin on your microcontroller.
3. Power the Circuit: Provide power to the voltage supply in your circuit.
4. Read the Output: The voltage at the junction will change with light intensity. The microcontroller can read this voltage and interpret the light level.
5. Adjust if Needed: Modify the fixed resistor value in the voltage divider to adjust the sensitivity to light.

This LDR 10-12 mm Light Dependent Resistor is an effective and compact choice for detecting and measuring light levels in various applications.