SparkFun Mini Stepper Motor Driver - TC78H670FTG

The SparkFun Mini Stepper Motor Driver empowers you to control bipolar stepper motors with ease and precision. This compact driver, measuring just 0.6in. by 0.8in. with breadboard-friendly 0.1in. pin spacing, shines in space-constrained projects and prototyping applications. Getting started is a breeze thanks to our comprehensive Arduino Library, which boasts 10 examples to guide you through the process. Furthermore, you achieve unmatched control over your motor's movement with high-resolution capabilities down to 1/128th of a step.

The Mini Stepper Motor Driver offers two control methods for greater flexibility: traditional clock-in stepping and serial commands. The serial control method unlocks unique features, allowing you to fine-tune your motor's performance on the fly. Adjust phase, torque, current limit, and mixed decay ratio easily through user-friendly serial commands. Unlike most stepper motor driver ICs that require an external trimpot for current limit adjustments, the Mini Stepper Motor Driver empowers you with software-based control, eliminating the need for physical adjustments.

Note: For a tool-less version of this motor driver, please check out our ProDriver. However, it should be noted that there is a slight difference in the functionality of the 3V3 pin. The ProDriver only requires a single input power supply, as the 3V3 pin is a voltage output.
  • Toshiba TC78H670FTG Bipolar Stepping Motor Driver
  • Control Protocol:
    • Clock-in
    • Serial
  • Step operation: full, half, quarter, 1/8, 1/16, 1/32, 1/64, 1/128
  • Power supply operating voltage: 3.6 V to 16.0 V
  • Output current: 2.0 A (max)
    • Over current protection from PTC
  • Multi error detect functions:
    • Thermal shutdown (TSD)
    • Over current (ISD)
    • Motor load open (OPD)
    • Under voltage lockout (UVLO)
  • Board Dimensions: 0.6in. × 0.8in.

SparkFun Mini Stepper Motor Driver - TC78H670FTG Product Help and Resources


Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • Brandon James / about 3 weeks ago / 1

    So this would be able to drive a stepper motor like the ROB-10846? Since its 1.7A/phase?

    • Yes, it can drive this motor. However, you would not be able to drive the motor in such a way to utilize its maximum torque. So it depends on your application. For your reference, it is rated for 2A max, so that effectively means 1A per phase. It is a matter of how much torque you need for your project and therefore how hard you want to drive it (it will heat up as you approach 2A). Also, you may like to check out our tutorial on how stepper motors work. Hope this helps!

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