SimpleFOCmini Brushless DC Motor Driver Board

The SimpleFOCmini is a compact, high-performance driver board engineered for the precise control of Brushless DC (BLDC) motors. Measuring just 26 x 21.5mm, this driver integrates Field-Oriented Control (FOC)—an advanced algorithm for real-time, closed-loop management of the motor's magnetic field. It supports a wide 8-30V power input and delivers up to 2.5A peak current, enabling superior efficiency and smooth, responsive control over motor position, speed, and torque. With native 3.3V/5V signal compatibility and full support for the SimpleFOC open-source library, it serves as an accessible, high-performance BLDC motor driver for developers using Arduino, ESP32, and Raspberry Pi platforms.

Figure: Features of SimpleFOCmini Brushless DC Motor Driver Board

Precise Control at All Speeds

Unlike conventional ESCs that struggle with low-speed stability, the FOC algorithm implemented by the SimpleFOCmini provides robust and smooth motor control across the entire speed range—from a complete standstill to maximum RPM. This capability is essential for applications requiring fluid, gradual acceleration, or steady rotation at very low speeds.

Closed-Loop Torque, Speed, and Position Control

The SimpleFOCmini unlocks three distinct closed-loop control modes. This motion control solution moves beyond simple speed adjustments to allow for direct current (torque) control for force-feedback systems, precise speed control for maintaining constant velocity under varying loads, and high-accuracy position control for robotic arms and actuators.

Exceptionally Quiet and Smooth Operation

By utilizing a sinusoidal wave drive instead of the high-frequency square waves found in typical ESCs, the SimpleFOCmini ensures exceptionally smooth motor commutation. This results in a significant reduction in audible noise and mechanical vibration, making this FOC controller ideal for noise-sensitive applications.

High-Performance Commutation and Braking

The FOC methodology provides superior commutation performance, enabling seamless and rapid switching between forward and reverse rotation, even at high speeds. Furthermore, this brushless driver supports regenerative braking, allowing for efficient and controlled deceleration by recovering kinetic energy.

Seamless Open-Source Integration

Designed for rapid development and prototyping, the SimpleFOCmini driver board accepts both 3.3V and 5V control signals for direct integration with mainstream microcontrollers. Its functionality is fully supported by the extensive SimpleFOC open-source library, which provides robust algorithms and clear examples for Arduino, ESP32, and Raspberry Pi platforms.