Basic Tutorial


This is the basic tutorial and should be used as template for other tutorials.


  • Arduino IDE

  • ESP32 Board

  • Good USB Cable


Here are the steps for this tutorial.

  1. Open the Arduino IDE

Arduino IDE (click to enlarge)
  1. Build and Flash the blink project.



Turns an LED on for one second, then off for one second, repeatedly.

Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to
the correct LED pin independent of which board is used.
If you want to know what pin the on-board LED is connected to on your Arduino
model, check the Technical Specs of your board at:

modified 8 May 2014
by Scott Fitzgerald
modified 2 Sep 2016
by Arturo Guadalupi
modified 8 Sep 2016
by Colby Newman

This example code is in the public domain.

// the setup function runs once when you press reset or power the board
void setup() {
// initialize digital pin LED_BUILTIN as an output.

// the loop function runs over and over again forever
void loop() {
digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
delay(1000);                       // wait for a second
digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
delay(1000);                       // wait for a second

Log Output

If the log output from the serial monitor is relevant, please add here:

I (0) cpu_start: App cpu up.
I (418) cpu_start: Pro cpu start user code
I (418) cpu_start: cpu freq: 160000000