Actuator and motor control tutorials for Arduino projects. Covers SG90 and MG996R servo motors, DC motor control with L298N and L293D drivers, and multi-servo control using the PCA9685 PWM driver board.
The L298N is a dual H-bridge motor driver, and it is one of the most common ways to control DC motors with an Arduino. Here I go through the pinout, how to wire it up, how PWM speed control actually works, and how to set motor direction in code. There is also a troubleshooting section for the issues that tend to come up.
Servo motors show up in almost every Arduino project I build, so I wrote this to cover the basics in one place. It starts with the SG90 micro servo and how PWM signals control the angle, then moves to running multiple servos using a PCA9685 driver board. All the code is tested and ready to use.