3-Pin/4-Pin Photosensitive Diode Module Light Brightness Detection Photoelectric Switch Intelligent CarItem NO.: Photodiode3/4

Photodiode Module

Purpose:

Light brightness detection, light brightness sensor, with directionality, only sensing the light source directly in front of the sensor, for better light finding effect

Module Features:

1. It can detect the brightness and light intensity of the surrounding environment (compared with the photosensitive resistor, the directivity is better, and it can sense the light source in a fixed direction)

2 Sensitivity adjustable (blue digital potentiometer adjustment in the figure)

3. Working voltage 3.3V-5V Working current: 8.2MA Static current: 4.7MA

4 Output form: DO digital switch output (0 and 1) and AO analog voltage output

5. It is equipped with fixing bolt holes for easy installation

6 Small PCB size: 3.2cm * 1.4cm

Module Instructions:

1 The photodiode module is the most sensitive to the ambient light intensity, and is generally used to detect the brightness and light intensity of the surrounding environment. It can be used with the photoresist sensor module in most occasions. The difference between the two is that the photodiode module has good directionality and can sense the light source in a fixed direction.

2. When the module has no light or the light intensity cannot reach the set threshold, the DO port outputs high level; when the ambient light intensity exceeds the set threshold, the module D0 outputs low level;

3. The digital output D0 of the small board can be directly connected with the single chip computer, and the high and low levels can be detected through the single chip computer, so as to detect the light intensity change of the environment;

4. The digital output DO of the small board can directly drive the relay module of the store, thus forming a photoelectric switch;

5. The analog output AO of the small board can be connected with the AD module of the store. Through AD conversion, more accurate values of ambient light intensity can be obtained

Wiring Instructions:

1. VCC -- connected to power supply positive pole 3.3-5V

2. GND -- connected to the negative pole of power supply

3. DO --- TTL switch signal output

4. AO --- Analog output