Application:
Light brightness detection, light brightness sensor, intelligent car light seeking module
Module features:
1. Sensitive photosensitive resistance sensor is used
2. Comparator output, clean signal, good waveform, strong driving ability, more than 15mA.
3. Equipped with adjustable potentiometer to adjust the detection light brightness
4. Working voltage 3.3v-5v
5. Output form: do digital switch output (0 and 1) and AO analog voltage output
6. Fixed bolt holes are provided for easy installation
7. Small PCB size: 3.2cm x 1.4cm
8. Using wide voltage LM393 comparator

Module instructions
1. The photosensitive resistance module is the most sensitive to the ambient light, which is generally used to detect the brightness of the ambient light, trigger the MCU or relay module, etc;
2. When the brightness of the ambient light does not reach the set threshold, the do side outputs high level. When the brightness of the ambient light exceeds the set threshold, the do side outputs low level;
3. The do output can be directly connected with the single chip microcomputer to detect the high and low level, so as to detect the change of the light brightness of the environment;
4. The do output can directly drive the relay module of our store, which can form a light control switch.

5、The analog output Ao of small board can be connected with AD module, and the more accurate value of ambient light intensity can be obtained through AD conversion;