The 10mm LDR (Light Dependent Resistor) Sensor Module is a high-sensitivity light detection tool designed for precision environmental monitoring. At Electrapac, we recommend this GL10516-based module for DIY enthusiasts who need a reliable way to measure light intensity or detect day/night transitions for their Arduino projects.

Product Overview

This module features a large 10mm Photoresistor (LDR), which provides a greater surface area for light capture compared to standard 5mm versions. This results in higher sensitivity and more stable readings. The module is built around a voltage comparator circuit (typically the LM393), allowing it to provide both an Analog output (AO) for real-time light levels and a Digital output (DO) for simple "Light/Dark" switching.

Key Features for Electrapac Customers

• Adjustable Threshold: The on-board blue potentiometer allows you to set a specific light intensity "trigger" point. When the light falls below this level, the digital output goes High/Low.

• Dual Output Mode: * Digital (DO): Perfect for simple tasks like turning on a lamp when it gets dark.

  • Analog (AO): Ideal for projects requiring precise light measurement or graphing light changes.

• Large 10mm Sensor: The GL10516 sensor offers superior performance in low-light conditions and is less prone to "flicker" than smaller sensors.

• Status Indicators: Features a Power LED and a Signal Output LED for easy debugging without needing a Serial Monitor.

• Plug-and-Play: Comes with a standard 3-pin or 4-pin header, making it compatible with all standard breadboards and jumper wires from www.electrapac.com.

Wiring & Calibration Guide

To integrate this sensor into your project:

1. VCC/GND: Connect to your microcontroller's 3.3V or 5V and Ground.

2. Digital Output (DO): Connect to a digital pin to detect a simple "Yes/No" light state.

3. Analog Output (AO): Connect to an Analog pin (like A0 on Arduino) to read varying voltage levels (0V to 5V) based on light intensity.

4. Calibration: Use a small screwdriver on the potentiometer while covering the sensor to set your desired switching threshold.

Primary Applications

• Smart Street Lights: Automatically turning on LEDs when the sun goes down.

• Solar Trackers: Using multiple modules to help solar panels follow the brightest point in the sky.

• Security Systems: Detecting a laser beam break or unauthorized light in a dark room.

• Environmental Monitoring: Logging light exposure for indoor plants or greenhouse management.

Why Shop at Electrapac?

We source the GL10516 10mm Sensor because it offers a more robust response curve than the generic 5mm versions. At www.electrapac.com, we provide the sensory components that allow your projects to see and react to the world around them.