Light Detection Photosensitive LDR Sensor 4 pin Module

Description

Product Description

• Photosensitive resistance module’s most sensitive to ambient light commonly used to detect the environment around them
• brightness of the light, or MCU trigger relay module, etc.;
• The module in the environment light intensity than the set threshold, output high level DO end, when the environment light intensity more than a set threshold, the DO output low level;
• The DO output can be directly connected to the microcontroller, through a single-chip microcomputer to detect the high and low level, thus to detect the environment light intensity change;
• 4 the DO output can be directly driven our relay module, which can form a light-operated switch.

Uses
light brightness detection, light brightness sensor, smart car light seeking module

Module features

1. Adopt sensitive photoresistor sensor
2. Comparator output, clean signal, good waveform, strong driving ability, more than 15mA.
3. Equipped with adjustable potentiometer to adjust the detection of light brightness
4. Working voltage 3.3V-5V
5. Output form: DO digital switch output (0 and 1) and AO analog voltage output
6. Equipped with fixed bolt holes for easy installation
7. Small board PCB size: 3.2cm x 1.4cm

 Instructions for using the wide voltage LM393 comparator module

1. The photoresistor module is most sensitive to ambient light, and is generally used to detect the brightness of the ambient light and trigger the single-chip or relay module and the like;
2, when the ambient light level module reach the set threshold value, the DO output high, when the ambient light level exceeds a set threshold value, the DO terminal output low;
. 3, may be associated with the DO output of the microcontroller Directly connected, through the single-chip microcomputer to detect high and low levels, thereby detecting changes in the ambient light brightness;
4, DO output can directly drive our store relay module, which can form a light control switch.

5. The small-plate analog output AO can be connected to the AD module. Through AD conversion, more accurate values ​​of ambient light intensity can be obtained;

Product wiring instructions
1. VCC is connected to the positive pole of the power supply 3.3-5V
2. GND is connected to the negative pole of the power supply
3. DO TTL switch signal output
4. AO analog signal output