28BYJ-48 stepper with ESP32-S3-DevKitC-1

Wiring for the 28BYJ-48 stepper + ULN2003 driver on the ESP32-S3-DevKitC-1 (ESP32-S3, 3.3 V logic), chosen with the same pin rules BoardPilot uses: default buses first, and no pins that are used for flash, USB, the debugger or booting.

Wiring

Check before you power it on

• Supply: 5 V from the 5V pin.
• Motors, servos, relays and LED strips can draw more current than the ESP32-S3-DevKitC-1’s pins or USB can give. Power them separately and connect the grounds together.

Test code (Arduino)

// Library: Stepper (built in)
#include <Stepper.h>

// 2048 steps per turn; note the IN1, IN3, IN2, IN4 order for this motor
Stepper motor(2048, 4, 6, 5, 7);

void setup() {
  motor.setSpeed(10);  // rpm
}

void loop() {
  motor.step(2048);   // one turn
  delay(500);
  motor.step(-2048);  // and back
  delay(500);
}

Arduino board: esp32:esp32:esp32s3. Use the port labelled UART. If uploading does not start, hold BOOT, press and release RESET, then release BOOT.

Questions

Which ESP32-S3-DevKitC-1 pins do I use for the 28BYJ-48 stepper?

IN1 → 4, IN2 → 5, IN3 → 6, IN4 → 7, - → G, + → 5V.

Does the 28BYJ-48 stepper work with the ESP32-S3-DevKitC-1 at 3.3 V?

Yes: the 28BYJ-48 stepper runs at 5 V and the ESP32-S3-DevKitC-1 uses 3.3 V signals, so no level shifting is needed.

Full ESP32-S3-DevKitC-1 pinout · 28BYJ-48 stepper + ULN2003 driver: all pins and data

The 28BYJ-48 stepper on other boards

ESP32 DevKit Arduino Mega 2560 R3 Arduino Nano Arduino Uno R3 WeAct Black Pill STM32F411CE ESP32-C3-DevKitM-1 Nordic nRF52840 DK NUCLEO-F401RE Raspberry Pi Pico 2 Raspberry Pi Pico W Raspberry Pi Pico Teensy 4.1

Other parts on the ESP32-S3-DevKitC-1

BME280 BMP280 DHT22 DHT11 HC-SR04 SSD1306 OLED MPU6050 DS18B20 WS2812B LED strip SG90 servo Relay module HC-SR501 PIR LCD 1602 I2C INA219 VL53L0X BH1750 MAX30102 RC522 RFID NEO-6M GPS Capacitive soil moisture sensor ADS1115 TM1637 L298N Potentiometer Push button LED Joystick module SD card module AHT20