Keyestudio ARDUINO maker learning kit, Руководство пользователя

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The circuit connection for this experiment is relatively simple. It has no processing of
the signal from the MIC, so signal is weak and insensitive. Instead of sound signal, we
blow air to the MIC.
Sample program
//////////////////////////////////////////////////////////
int LEDpin = 7;
// set pin for LED
void setup() {
Serial.begin(9600);
pinMode(LEDpin,OUTPUT);
}
void loop() {
int Soundvalue = analogRead(A0); // read the input analog value
Serial.println(Soundvalue);
if(Soundvalue>300)
{
digitalWrite(LEDpin,HIGH); // when the analog value is bigger than the set value, turn