Reprap Micro-stepping Driver A4988 1/16-Micro-Step (Peak 2A) w/ Heatsink

  • Was  RM13.00 
  • RM9.00

  • Product Code: A4988 Reprap
  • Availability: In Stock

This breakout board for Allegro’s A4988 micro-stepping bipolar stepper motor driver features adjustable current limiting, over-current and over-temperature protection, and five different micro-step resolutions (down to 1/16-step). It operates from 8 V to 35 V and can deliver up to approximately 1 A per phase without a heat sink or forced air flow (it is rated for 2 A per coil with sufficient additional cooling). This board ships with 0.1" male header pins included but not soldered in.



  • Simple step and direction control interface
  • Five different step resolutions: full-step, half-step, quarter-step, eighth-step, and sixteenth-step
  • Adjustable current control lets you set the maximum current output with a potentiometer, which lets you use voltages above your stepper motor’s rated voltage to achieve higher step rates
  • Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay)
  • Over-temperature thermal shutdown, under-voltage lockout, and crossover-current protection
  • Short-to-ground and shorted load protection
  • Made as pluggable modules to a electronics motherboard. A good reason of this design is, that it is easy to exchange the module boards when troubleshooting - or when a board has burned out.

Overcurrent Protection:  If the boards get too hot, they will interrupt the current until it cools a bit. If the current is too high for the heat sinking, the motors will pulse as the current is interrupted and restored. See,116813,116832,quote=1 and its video. Try reducing the current until the pulsing stops.


  • Operating voltage: 8V ~ 35 V DC
  • Continuous current per phase: 1.2 A2
  • Maximum current per phase: 2 A3
  • Minimum logic voltage: 3V
  • Maximum logic voltage: 5.5V
  • Microstep resolutions: full, 1/2, 1/4, 1/8, and 1/16
  • Weight: 3.7g


  • Stepper motors
  • 3D printer, CNC, engraving machines
  • Supported 3d printers like Prusa Mendel, ultimaker, printbot, makerbot and so on

Package included:

  • 1 * A4988 module
  • 1 * Heatsink





CNC Shield V3 Stepper Motor Controller for A4988 - Arduino Compatible

Using an Arduino to make a CNC miller?

  • CNC Shield compatible with Arduino Uno
  • Control four stepper motors with A4988 stepper drivers
  • One motor can clone one of the other motors
  • GRBL compatible pinout
  • Can be interfaced with other microcontroller systems

Related Article:

Key differences between the DRV8825 and A4988

The DRV8825 carrier was designed to be as similar to our A4988 stepper motor driver carriers as possible, and it can be used as a drop-in replacement for the A4988 carrier in many applications because it shares the same size, pinout, and general control interface.

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