Raspberry Pi L298N motor controller

Introduction

RPi is powered by 5V, but on board it is reduced to GPIO 3.3V (GPIOs) and processors and memory (1.8V).

If needed to connect a 5V sensor to Pi, first reduce the 5V to 3.3V by using eg 2 resistors as voltage divider.

However, note that in the digital line the 1 bit is at __V.

Connections

Shared ground.

• L298N VCC → External 5-12V power supply (positive)
• L298N GND → Power supply ground AND Pi 5 ground pin
• L298N 5V → Pi 5 5V pin (only if using 12V motor supply)

Control Connections:

• L298N IN1 → Pi 5 GPIO 18
• L298N IN2 → Pi 5 GPIO 19
• L298N IN3 → Pi 5 GPIO 20
• L298N IN4 → Pi 5 GPIO 21
• L298N ENA → Pi 5 GPIO 12 (PWM)
• L298N ENB → Pi 5 GPIO 13 (PWM)

Motor Connections:

• OUT1/OUT2 → Motor A terminals
• OUT3/OUT4 → Motor B terminals

Python

Install the GPIO package

sudo apt install python3-rpi.gpio