Keyestudio ESP32 - 4. Test Result

ESP32 Starter Kit
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void setup() {
pinMode(ledPin, OUTPUT);
}
void loop() {
//Three quickly blinks mean “S”
for(int x=0;x<3;x++){
digitalWrite(ledPin,HIGH); //Set LED to light up
delay(150); //Delay 150ms
digitalWrite(ledPin,LOW); //Set LED to turn off
delay(100); //Delay 100ms
}
//delay 200ms to generate the space between letters
delay(200);
//Three slowly blinks mean “O”
for(int x=0;x<3;x++){
digitalWrite(ledPin,HIGH); //Set LED to light up
delay(400); //Delay 400ms
digitalWrite(ledPin,LOW); //Set LED to turn off
delay(200); //Delay 200ms
}
//Delay 100ms to generate the space between letters
delay(100);
// Three quickly blinks mean “S”
for(int x=0;x<3;x++){
digitalWrite(ledPin,HIGH); //Set LED to light up
delay(150); //Delay 150ms
digitalWrite(ledPin,LOW); //Set LED to turn off
delay(100); //Delay 100ms
}
// Wait 5s before repeating S.0.S
delay(5000);
}
4. Test Result
After the code is successfully uploaded, we can see that the LED flashes 3 times quickly, then slowly flashes 3 times
and then flashes 3 times quickly, then flash again 5s later.
52 Chapter 8. Arduino Tutorial