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A4988 Stepper Motor Driver Module for RepRap

R88.60 inc VAT

1A stepper motor driver module. Work excellent with our  CNC shield.

1 in stock

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SKU: stepper-130 Categories: ,


Adjusting the stepper driver current
See these instructions: Pololu_stepper_driver_board#Tuning_motor_current.

 A4988 DRV8825
Max. theoretical current 1.5A 2.5A
Max. microsteps 1632
PCB color Green / Red Purple
Stepper current adjust. trimpot Yes, near Dir pin Yes, near En pin
Typical Rs value 0.05 Ohm or
0.1 Ohm or
0.2 Ohm
0.1 Ohm
Vref formula (*) I_TripMax= Vref/(8*Rs) I_TripMax= Vref/(5*Rs)
Thermal Overload Protection (**) Yes Yes
PCB layers 24
Small heatsink included (***) Almost always Sometimes not
Active cooling required? Recommended Recommended
IC packaging 5x5mm 28-lead QFN 9.7×6.4mm 28HTSSOP



Packing list: 1 x stepper driver, 1 x heat sink


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