Manual Click here to openFeature Description 1 Adopt high quality audio processing chip2 The amplitude of the output audio signal is adjustable the size of the sound can be detected the gain is adjustable and the performance is stable3 Use single point grounding wiring to reduce loop gain and improve audio signal quality4 With fixing bolt holes for easy installation5 Standard ARDUIN0 interface which can be directly connected to the ARDUIN0 development board6 Good sensitivity built in amplifier circuit adjustable gain voltage signal of sound intensity can be obtained through AD conversion7 Suitable for ARDUIN0 platform compatible with ARDUIN0 sensor interfaceInterface description 3 wire system VCC 5V voltageGND External GNDOUT analog voltage signal output signal amplitude VCC 2Product Usage The sound of the surrounding environment can be converted into electrical signals to detect the sound of the surrounding environment The output of A0 is an analog signal and the AD operation can be performed on the A0 terminal to collect the signal for secondary development and application Of course it can also be directly connected to the corresponding sound device for sound playback Instructions 1 Connect VCC and GND the module power indicator is on adjust the potentiometer of the module to the appropriate position This potentiometer mainly adjusts the amplitude of the AO output analog signal Under the same decibel volume when adjusting clockwise the AO ou