Photo-resistor LDR Light Sensor Module (Light Dependent Resistor)

Photo-resistor LDR (Light Dependent Resistor) Sensor Module

Features:

• Able to detect ambient brightness and light intensity
• Adjustable sensitivity (via blue digital potentiometer adjustment)
• Operating voltage 3.3V-5V
• Digital switching outputs (0 and 1) -D0
• With fixed bolt hole for easy installation
• Small board PCB size: 3cm * 1.6cm
• Power indicator (Red) and the digital switch output indicator (Green)
• Features wide range voltage comparator LM393

Pin outs:

• External 3.3V-5V VCC
• External GND ground
• DO digital output interface, a small plate (0 and 1)

How to use:

• Photosensitive resistor module most sensitive to environmental light intensity is generally used to detect the ambient brightness and light intensity.
• Module light conditions or light intensity reach the set threshold, DO port output high, when the external ambient light intensity exceeds a set threshold, the module D0 output low;
• Digital output D0 directly connected to the MCU, and detect high or low TTL, thereby detecting ambient light intensity changes;
• Digital output module DO  can directly drive the relay module, which can be composed of a photoelectric switch;