🏃‍♂️ ESP32 Custom Group Size LED Chaser

Generate ESP32 code for an 8-LED chaser with selectable group size (1-4 LEDs) and variable speed.

✓ ESP32 (.ino) ✓ Live code preview ✓ Free download

Create a fully customizable LED chaser on ESP32. Choose how many LEDs light up together (1 to 4) and control the animation speed for endless pattern variations.

Uses sequential group chasing forward and reverse. Great for learning dynamic GPIO control and animation on ESP32.

⚙️

Customise & Download

Adjust settings below — the code updates live in real time

Live preview

Configure your ESP32 Custom LED Chaser

LED Group Size

Number of LEDs lit together in each step of the chase

Chase Speed (ms)

300

Delay between group movements (lower = faster)

↓ Your settings are reflected in the code below

Generated code — live preview

ESP32 (.ino) 0 lines

/*
  ==========================================================
   ESP32 Custom LED Chaser
   Generated by techlogics.net
   https://techlogics.net/electronics/esp32-custom-led-chaser.php
  ==========================================================

   CAUTION: Review this code fully before uploading to any
   hardware. Verify all pin connections and power requirements
   match YOUR specific components. We are not responsible for
   damage to hardware, fire, or injury resulting from incorrect
   wiring, faulty components, or misuse of this code.

   Generated on: 09 Jul 2026
  ==========================================================
*/

/*
  ESP32 Custom LED Chaser — generated by techlogics.net
  Hardware: ESP32 + 8 LEDs with resistors
*/

// User configurable
const int CHASE_DELAY_MS = 300;
const int GROUP_SIZE = 2;

// Common ESP32 GPIO pins
const int ledPins[8] = {2, 4, 5, 18, 19, 21, 22, 23};

void setup() {
  for (int i = 0; i < 8; i++) {
    pinMode(ledPins[i], OUTPUT);
  }
  Serial.begin(115200);
  Serial.println("ESP32 Custom Group LED Chaser Ready");
}

void loop() {
  int numGroups = 8 / GROUP_SIZE;
  // Forward chase
  for (int g = 0; g < numGroups; g++) {
    for (int i = 0; i < 8; i++) digitalWrite(ledPins[i], LOW);
    int start = g * GROUP_SIZE;
    for (int j = 0; j < GROUP_SIZE && start + j < 8; j++) {
      digitalWrite(ledPins[start + j], HIGH);
    }
    delay(CHASE_DELAY_MS);
  }
  // Reverse chase
  for (int g = numGroups - 2; g >= 0; g--) {
    for (int i = 0; i < 8; i++) digitalWrite(ledPins[i], LOW);
    int start = g * GROUP_SIZE;
    for (int j = 0; j < GROUP_SIZE && start + j < 8; j++) {
      digitalWrite(ledPins[start + j], HIGH);
    }
    delay(CHASE_DELAY_MS);
  }
}

/*
  ==========================================================
   End of generated code — techlogics.net
   Found this useful? Visit https://techlogics.net/electronics/esp32-custom-led-chaser.php
   for more free CCTV, networking, electronics & finance tools.

   Questions or issues? https://techlogics.net/contact.php
  ==========================================================
*/

How to use

1. Connect 8 LEDs with resistors to GPIO 2,4,5,18,19,21,22,23.

2. Select group size (1/2/3/4 LEDs per step) and chase speed.

3. Generate and upload the code to your ESP32.

4. Enjoy customizable chasing patterns based on your settings.