Tutorial: Hello LED (EduESP32-S3)

Blink the on-board LED (or WS2812) of the ESP32-S3 with Arduino.

Requirements

• EduESP32-S3
• Arduino IDE 2.x with the esp32 by Espressif Systems core
• USB-C cable

Code (plain LED)

#define LED_PIN 2   // adjust to your on-board LED GPIO

void setup() {
  pinMode(LED_PIN, OUTPUT);
}

void loop() {
  digitalWrite(LED_PIN, HIGH);
  delay(500);
  digitalWrite(LED_PIN, LOW);
  delay(500);
}

WS2812 RGB LED variant

#include <Adafruit_NeoPixel.h>
#define PIN 48
Adafruit_NeoPixel pixel(1, PIN, NEO_GRB + NEO_KHZ800);

void setup() { pixel.begin(); pixel.setBrightness(40); }

void loop() {
  pixel.setPixelColor(0, pixel.Color(255, 0, 0)); pixel.show(); delay(400);
  pixel.setPixelColor(0, pixel.Color(0, 255, 0)); pixel.show(); delay(400);
  pixel.setPixelColor(0, pixel.Color(0, 0, 255)); pixel.show(); delay(400);
}

Upload and test

1. Select board ESP32S3 Dev Module and the right serial port.
2. Hit Upload.
3. The LED should blink or cycle colors.

Next step

Move on to Tutorial: Hello UART or jump straight to Hello Wi-Fi.