Features:
1. It can detect the sound intensity of the surrounding environment. Note: This sensor can only recognize the presence or absence of sound (according to the vibration principle) and cannot recognize the size of the sound or the sound of a specific frequency.
2. Sensitivity is adjustable (blue digital potentiometer adjustment in the figure)
3. Working voltage: 3.3V-5V
4. Output form: digital switch output (0 and 1 high and low level)
5. With fixing bolt holes for easy installation
6. Small board PCB size: 3.2cm*1.7cm
7. Use: Sound sensing detection
Wiring instructions:
1.VCC external 3.3V-5V voltage (can be directly connected to 5V MCU and 3.3V MCU)
2. GND external GND
3.OUT small board switch output interface (0 and 1)
Instructions for use:
1. The sound module is sensitive to the ambient sound intensity and is generally used to detect the sound intensity of the surrounding environment.
2. When the ambient sound intensity reaches the set value, the OUT outputs a high level; when the ambient sound intensity exceeds the set value, the module OUT outputs a low level.
3. The small-plate digital output OUT can be directly connected to the single-chip microcomputer, and the high-low level is detected by the single-chip microcomputer, thereby detecting the sound of the environment.