The L298N is a ready-made dual H-bridge module on a full breakout board, with a higher current capacity than the integrated L293D chip, making it a stronger choice for higher-draw stepper motors like the NEMA 17.
Components needed
An Arduino board, an L298N module, a bipolar stepper motor (NEMA 17), and an external 12V power supply.
Wiring it up
The module is powered by an external 12V supply on the VCC pin, and four Arduino digital pins (8, 9, 10, and 11 in this project) connect to the IN1 through IN4 input pins. The motor's four coil wires (A+, A-, B+, B-) connect to the module's corresponding motor outputs, with the ENA and ENB enable pins kept continuously active to ensure uninterrupted operation.
How it works
The module activates the motor's electromagnetic coils in a set sequence, turning the motor shaft in precise successive steps. The module operates across a 5-35V range with a peak current of up to 2A, with built-in thermal and overcurrent protection.
L298N vs. L293D
The L293D remains a suitable choice for simpler, lower-current applications, while the L298N suits higher-current motors thanks to its greater capacity. For applications needing precise control of multiple stepper motors, like 3D printers and CNC machines, dedicated drivers like the A4988 are preferred over both.
You can find L298N modules and bipolar stepper motors at Juthour Tech.
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