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Features

The kode dot integrates an addresable LED on the top left of the pad, that you can light up with the color and brightness you want. It is not a normal RGB LED, but an addresable RGB LED WS2812B. This means that inside the LED there is a small integrated circuit that can independently handle the color of the RGB LEDs and the brightness of each one.
FeatureDescription
DriverWS2812B - 1-Wire
Size2mm x 2mm
ColorRGB

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Connection diagram

The addresable LED works through a single pin connected to the ESP32-S3.
WS2812BESP32-S3
DataGPIO4
1-Wire is a communication protocol that allows data communication through a single pin.

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Arduino

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ESP-IDF

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Example code

This code lights up the addresable LED by making a color cycle: first red, then green, and finally blue.
rgb_cycle.ino
/**
 * Controls a single NeoPixel connected to GPIO 4, lighting it in red, green, and blue.
 * Each color stays on for half a second, turning off between changes.
 * Uses the Adafruit_NeoPixel library to control RGB LEDs.
 */
/* ───────── KODE | docs.kode.diy ───────── */

#include <Adafruit_NeoPixel.h> /* Library to control NeoPixel strips and LEDs */

#define NEOPIXEL_PIN   4                  /* GPIO pin where the NeoPixel is connected */
#define NUMPIXELS      1                  /* Number of connected NeoPixels */
#define PIXEL_FORMAT   (NEO_GRB + NEO_KHZ800) /* Color format and data speed */

Adafruit_NeoPixel *pixels;                /* Pointer to the NeoPixel object */

#define DELAYVAL       500                /* Delay time between changes (ms) */

void setup() {
  Serial.begin(115200);                   /* Start serial communication for debugging */

  /* Create the NeoPixel object with the defined parameters */
  pixels = new Adafruit_NeoPixel(NUMPIXELS, NEOPIXEL_PIN, PIXEL_FORMAT);

  pixels->begin();                        /* Initialize the NeoPixel */
  pixels->clear();                        /* Ensure the LED starts off */
  pixels->show();                         /* Apply the change */
}

void loop() {
  /* Turn on red */
  pixels->setPixelColor(0, pixels->Color(150, 0, 0));
  pixels->show();
  delay(DELAYVAL);

  /* Turn off */
  pixels->setPixelColor(0, pixels->Color(0, 0, 0));
  pixels->show();
  delay(DELAYVAL);

  /* Turn on green */
  pixels->setPixelColor(0, pixels->Color(0, 150, 0));
  pixels->show();
  delay(DELAYVAL);

  /* Turn off */
  pixels->setPixelColor(0, pixels->Color(0, 0, 0));
  pixels->show();
  delay(DELAYVAL);

  /* Turn on blue */
  pixels->setPixelColor(0, pixels->Color(0, 0, 150));
  pixels->show();
  delay(DELAYVAL);

  /* Turn off */
  pixels->setPixelColor(0, pixels->Color(0, 0, 0));
  pixels->show();
  delay(DELAYVAL);
}

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Download examples

You can test the example codes using the Arduino IDE or the ESP-IDF IDE or download the codes in our drive: Addresable LED examples