Name:  Reprap  A4988  stepper motor driver StepStick compatible arduino

Packing list

 5pcs * A4988 (2A)

 5pcs*heat sink

Notice :

Green version:  Rs =0.1Ω ;  current : max 2A; 

Red version : Rs =0.2Ω ;  current : max 1A.

The  current calculation : i = vref  /0.8

Potentiometer has three pins, the voltage Vref  is with a multimeter test for the 4988 direction of the pin, the current can be adjusted by potentiometer. It  will increase  clockwise, oppositely , reduce  counterclockwise.

Advantage :

1.High quality 2OZ copper PCB replaces using cheaper 1OZ PCB.

2.Products have bee tested  one by one;and excellent work.

3.Free aluminium heat-sink.

4.Solder overgild needles and newest chip.

Parameters: 

      Size: 1.5mmX2mm (for RAMPS, ultimaker or other compatible boards)

      Driver current: 2A (it is best to  install the heat sink ) 

     Microstep: 1,1 / 2,1 / 4,1 / 8,1 / 16