Light Sensing Module - LDR
Detects if there is light or dark around, adjustable digital output trigger level, Analog+Digital output
Light Sensing Module - LDR
Sunrom Product Code for Ordering:
4589
Specifications
- Operating Voltage: 3.3V to 5V DC
- Operating Current: 15ma
- Output Digital - 0V to 5V, Adjustable trigger level from preset
- Output Analog - 0V to 5V based on light falling on the LDR
- LEDs indicating output and power
- PCB Size: 3.2cm x 1.4cm
- LM393 based design
Board Schematic
Pin details
- VCC = 3.3V to 5V DC
- GND = Ground
- DO = Digital Output
- AO = Analog Output
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;
- Analog output module AO and AD modules can be connected through the AD converter, you can get a more accurate light intensity value
