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A4988

The A4988 Stepper Motor Driver Carrier Board


Board



All specs are by default described for the
PCB only, without pin headers, heat sink, ..




General Specs


Imperial Metric
🡘 0.6" 15.24 mm
🡙 0.8" 20.32 mm
Weight 20.06 gr 1.3 g



Power Specs

The PCB does not have Reverse Voltage Protection

Voltage

Maximum continues current per phase.

Current




Step Types


Type M3 M2 M1 Dec
Full 0
1 / 2 X 1
1 / 4 X 2
1 / 8 X X 3
1 / 16 X X X 7



Dimensions


Imperial Metric
Dimensions Imperial Dimensions Metric



Internal Wiring


Wiring


Resistors Value Capacitors Value
R1 68mΩ C1 4.7μF
R2 C2 0.1μF
R3 100kΩ C3 0.1μF
R4 10kΩ C4 0.1μF
R5 20kΩ C5 0.1μF
R6 100kΩ C6 0.22μF
R7 ~ C7 0.22μF