Keyestudio ESP32 - Page 113

ESP32 Starter Kit
Code
To fulfil an invasion alarm, an “if() else” statement is necessary.
/*
keyestudio ESP32 Inventor Learning Kit
Project 17.2 Invasion Alarm
http://www.keyestudio.com
*/
int pir = 5; //Set PIR sensor pin to IO5
int red_led = 18; //Set red LED to pin IO18
int buzz = 19; //Set buzzer to pin IO19
void setup() {
// put your setup code here, to run once:
pinMode(pir,INPUT); //Set PIR pin to input mode
pinMode(red_led,OUTPUT); //Set LED pin to output mode
pinMode(buzz,OUTPUT); //Set buzzer pin to output mode
}
void loop() {
// put your main code here, to run repeatedly:
int pir_val = digitalRead(pir);
if(pir_val == 1){
digitalWrite(red_led,HIGH);
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8.5. Arduino Project 109