3.2A NEMA23 Smart Stepper

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NEMA23 3.2A
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NEMA23 Smart Stepper

Uses the A5995 chip as a 3.2A driver for NEMA23 motors.

Runs the latest firmware from github, just be sure to select the A5995 driver in the board.h file.


Closed Loop Smart Stepper

The MisfitTech’ smart steppers turn a stepper motor into a closed loop servo.  

The Smart Steppers uses a high-speed 32-bit processor combined with a 14bit (16384 pulse per revolution) encoder and motor driver to provide a closed loop PID control of the stepper motor.


  • Open source hardware
  • Open source firmware
  • Fixed point math for highest reliability
  • High speed digital step and direction interface
  • 256k flash, 32k SRAM
  • Arduino compatible firmware
  • Positional PID control
  • Velocity PID control
  • Hybrid Positional PID control
  • On board Motion Planner for standalone operation
  • Level shifted logic interface to work with 3.3V and 5V motion controllers
  • Extra serial (UART) interface for connecting to external controllers
  • Optional LCD for easy setup and configuration
  • Command line interface through USB port for configuration and firmware updates
  • 3.2A motor driver 

Seed the User Manual  for specifications and installation instructions.

Ships with:

  1. Magnet
  2. Programmed NEMA23 A5595 3.2A board
  3. LCD (optional)
  4. M3 nylon washers

You will need M3 screws and/or stand offs to connect to your motor.


NEMA23 Smart Stepper

Runs the latest firmware from github, just be sure to select the A5995 driver in the board.h file.

Join us on google groups for more information: https://groups.google.com/forum/#!forum/smart-stepper


1 Review Hide Reviews Show Reviews

  • 5
    Smart Stepper Driver

    Posted by Bill Courtright on Aug 2nd 2017

    I've been using the Smart Stepper for a while now on a home made 3D printer. The most recent Nema23 driver had a bad switch and the problem was resolved with no delay. Next project is a CNC router using Smart Steppers.