Technical documentation, datasheets, and assembly instructions for uStepper closed-loop stepper motor controllers and shields.
uStepper closed-loop stepper motor controllers combine a high-performance stepper driver, magnetic encoder feedback, and a programmable microcontroller in a compact NEMA 17 mountable package. Unlike traditional open-loop step motor controllers, uStepper continuously monitors shaft position and compensates for lost steps in real-time, ensuring precision movement for 3D printers, CNC machines, robotics, and industrial automation applications. Browse the product sheets and technical documentation below.
The uStepper S32 is our flagship closed-loop stepper motor controller, featuring a 32-bit 84MHz Cortex-M4 microcontroller for advanced motion control algorithms. Compatible with NEMA 17 motors and the Arduino IDE, it provides real-time encoder feedback with 0.011-degree resolution. The uStepper 8b is our latest-generation 8-bit closed-loop stepper motor controller, building on the proven uStepper S-lite platform with enhanced performance and reliability for precision motion control applications.
Expand your uStepper stepper motor controller with our range of shields and add-on modules. The WiFi GUI Shield enables wireless monitoring and control of your closed-loop stepper motor parameters from any web browser, while the 3D Shield provides a dedicated interface for 3D printer applications.
See how uStepper closed-loop stepper motor controllers are used in real-world applications. From 3D printer upgrades to CNC machine conversions and robotics, our application guides walk you through the benefits and implementation of closed-loop step motor control.