L298N dual motor driver with ESP32

Supply 5 V Bus GPIO

Pins and ESP32 wiring

Pin	Role	ESP32 pin	Notes
ENA	Input (the ESP32 drives it)	D25	Motor A speed (PWM). Remove the jumper to use it
IN1	Input (the ESP32 drives it)	D26	Motor A direction
IN2	Input (the ESP32 drives it)	D27	Motor A direction
IN3	Input (the ESP32 drives it)	D32	Motor B direction
IN4	Input (the ESP32 drives it)	D33	Motor B direction
ENB	Input (the ESP32 drives it)	D23	Motor B speed (PWM). Remove the jumper to use it
12V	Not wired to the ESP32	—	Motor supply 5 to 35 V from a separate supply
GND	Ground	GND	Share it with the motor supply and the ESP32 GND
5V	Not wired to the ESP32	—	5 V output of the on-board regulator (jumper on, supply up to 12 V)
OUT1	Not wired to the ESP32	—	Motor A
OUT2	Not wired to the ESP32	—	Motor A
OUT3	Not wired to the ESP32	—	Motor B
OUT4	Not wired to the ESP32	—	Motor B

Suggested wiring for the 30-pin ESP32 DevKit, avoiding flash, input-only and strapping pins. BoardPilot checks it for you as you wire.

This module is sold for 5 V. Its outputs may be 5 V: use a level shifter or a voltage divider on ESP32 inputs.

The L298 loses about 2 to 3 V inside: a motor on a 6 V supply gets roughly 4 V. Connect the driver’s GND to the board’s GND. (ST L298 datasheet, Total drop (source + sink saturation voltage))

ST L298 datasheet, Logic inputs: HIGH level from 2.3 V; about 2 V drop across the bridge

Part data: CC BY 4.0, free to reuse with credit to BoardPilot.