Big Easy Driver
Stepper motor driver board based on the Allegro A4988, supporting bipolar stepper motors up to 2 A per phase. Accepts step/direction control signals and provides microstepping up to 1/16 step.
Pinout
- STEPlogic?
step pulse input
Type · Signal - DIRlogic?
direction input
Type · Signal - ENABLElogic?
enable input
Type · Signal - M+power?
motor supply positive
Type · Power - GNDpower?
ground
Type · Ground - Amotor?
coil A output
Type · Unknown - Bmotor?
coil B output
Type · Unknown
| Pin | Position | Type | Function |
|---|---|---|---|
| STEP | logic? | Signal | step pulse input |
| DIR | logic? | Signal | direction input |
| ENABLE | logic? | Signal | enable input |
| M+ | power? | Power | motor supply positive |
| GND | power? | Ground | ground |
| A | motor? | Unknown | coil A output |
| B | motor? | Unknown | coil B output |
Pin details
7 connections- STEPlogic?
step pulse input
Signal - DIRlogic?
direction input
Signal - ENABLElogic?
enable input
Signal - M+power?
motor supply positive
Power - GNDpower?
ground
Ground - Amotor?
coil A output
Unknown - Bmotor?
coil B output
Unknown
Start wiring
PWM · I2C · UART · Wide input · Breakout
Verify supply voltage and logic levels before powering up.
Module pins: M+, GND, STEP, DIR, ENABLE. Schematik maps them to your board in the app.
Motor drivers
76 other optionsH-bridge breakouts from 1A to 43A (DRV8871, TB6612FNG, BTS7960), stepper drivers (A4988, TMC260, TB6600), I2C servo/solenoid controllers, and Pi/Arduino shields — sized by current and protocol.
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