ماژول میکروفون

1 can detect the intensity of ambient sound, using Note: This sensor can identify the presence or absence (in accordance with the principles of vibration) size does not recognize the sound of a specific frequency of sound or sound
2 adjustable sensitivity (shown in blue digital potentiometer adjustment)
3 Operating Voltage 3.3V-5V
5 output in the form of digital switching output (0 and 1 high and low)
6 has a fixed bolt hole for easy installation
7 small PCB board size: 3.2cm * 1.7cm

Two module wiring instructions
1 VCC 3.3V-5V external voltage (can be directly connected to the 5v and 3.3v microcontroller MCU)
2 GND External GND
3 OUT small plates switch output interfaces (0 and 1)

Three instructions
1 sound module sound intensity most sensitive to the environment, is generally used to detect the intensity of ambient sound.
2 Module not reach the set threshold intensity of the sound environment, OUT output high when the ambient sound level exceeds the set threshold, the module OUT output low;
3 small board digital output OUT can be directly connected to the microcontroller through the microcontroller to detect high and low, thereby detecting a sound environment;
4 small board digital output OUT OUR relay module can directly drive, which can be composed of a voice-activated switch;