Keyestudio ESP32 - Page 129

ESP32 Starter Kit
Code
/*
keyestudio ESP32 Inventor Learning Kit
Project 21.2Sound Controlled LED
http://www.keyestudio.com
*/
int sound = 33; //Define sound to IO33
int led = 25; //Define led to IO25
void setup(){
pinMode(led,OUTPUT); //Set IO25 to output
}
void loop(){
int value = analogRead(sound); //Read analog value of IO33 and assign it to value
if(value > 100){ //Judge whether value is greater than 100
digitalWrite(led,HIGH); //If IO25 pin outputs high level, LED lights up
delay(2000);
}
else{
digitalWrite(led,LOW); //If IO25 pin outputs low level, LED lights off
}
}
8.5. Arduino Project 125