KY-038 Datasheet | Joy-IT

description 1 3 Pinout 2 4 Functionality of the sensor 2 5 Code example Arduino 3 6 Code example Raspberry Pi 4 Picture Technical data / Short description Digital Out: You can use a potentiometer to configure an extreme value for the sonic. IF the value exceeds the extreme value it will send a signal via digital out. Analog Out: Direct microphone signal as voltage value  LED1: Shows that the sensor is supplied with voltage  LED2: Shows that a magnetic field was detected Export: 16.06.2017 Copyright by Joy-IT - Published under CC BY-NC-SA 3.0 Page 172 of 214 KY-038 Microphone sound sensor module Pinout Functionality of the sensor The sensor has 3 main ponents on its circuit board. First, the sensor unit at the front of the module which measures the area physically and sends an analog signal to the second unit, the amplifier. The amplifier amplifies the signal, according to the resistant value of the potentiometer, and sends the signal to the analog output of the module. The third ponent is a parator which switches the digital out and the LED if the signal falls under a specific value. You can control the sensitivity by adjusting the potentiometer. Please notice: The signal will be inverted; that means that if you measure a high value, it is shown as a low voltage value at the analog...