Carrier board for the Allegro A4988 microstepping driver with built-in translator (STEP/DIR interface) and over-current and over-temperature protection. Supports up to 1/16 microstepping; maximum 2 A per coil with adequate heatsinking.
enable input
microstep select 1
microstep select 2
microstep select 3
reset input
sleep input
step input
direction input
motor supply
motor ground
motor coil B
motor coil B
motor coil A
motor coil A
logic supply
logic ground
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| ENABLE | 1 | control | enable input | |
| MS1 | 2 | control | microstep select 1 | |
| MS2 | 3 | control | microstep select 2 | |
| MS3 | 4 | control | microstep select 3 | |
| RESET | 5 | control | reset input | |
| SLEEP | 6 | control | sleep input | |
| STEP | 7 | control | step input | |
| DIR | 8 | control | direction input | |
| VMOT | 9 | power | motor supply | |
| GND | 10 | ground | motor ground | |
| 2B | 11 | motor | motor coil B | |
| 2A | 12 | motor | motor coil B | |
| 1A | 13 | motor | motor coil A | |
| 1B | 14 | motor | motor coil A | |
| VDD | 15 | power | logic supply | |
| GND | 16 | ground | logic ground |
PWM · I2C · UART · Wide input · Breakout
Confirm the data interface matches your host board.
Module pins: VMOT, VDD, GND. Schematik maps them to your board in the app.
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