LDR Module Sensor

Description

LDR sensor module is used to detect the intensity of light. The output of the module goes high in the presence of light and it becomes low in the absence of light. The sensitivity of the signal detection can be adjusted using potentiometer. It is associated with both analog output pin and digital output pin labelled as AO and DO respectively on the board. When there is light, the resistance of LDR will become low according to the intensity of light.

Features / Specifications

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)

Tutorials / Manuals / Documents

• LDR sensor module | How LDR Sensor Works (by Electroduino)
• LDR Datasheet
• LDR Sensor Module Interface With Arduino (by Instructables)