A4988 Stepper Motor Driver Module for RepRap
1A stepper motor driver module. Work excellent with our CNC shield.
R90.87 inc VAT
Out of stock
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 | 16 | 32 |
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 | 2 | 4 |
Small heatsink included (***) | Almost always | Sometimes not |
Active cooling required? | Recommended | Recommended |
IC packaging | 5x5mm 28-lead QFN | 9.7x6.4mm 28HTSSOP |
Packing list: 1 x stepper driver, 1 x heat sink
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