board I/O module

STEP/DIR stepper driver

The STEP/DIR stepper driver is a board I/O module in the LabWired part catalog. Its catalog type is a4988. It connects to the MCU over GPIO. The catalog gives a supply range of 3–5.5 V. It has 10 pins. A registered peripheral model runs in the engine: the firmware talks to it over the real bus and gets device-accurate responses.

Key facts

Category	Board I/O modules
Catalog type	`a4988`
Interface	GPIO
Supply range	3–5.5 V
Pins	10

What LabWired simulates

What is simulated

Simulated device model

How it was validated

Built from the datasheet. Implemented from the part’s register documentation and exercised by automated tests. Nothing physical was ever placed next to it.

STEP/DIR stepper driver pinout

Power: VDD, GND
GPIO: STEP, DIR, EN, MS1, MS2, MS3, RESET, SLEEP

Pin	Electrical type	Function
`VDD`	Power input	Supply
`GND`	Power input	Supply
`STEP`	Input	GPIO
`DIR`	Input	GPIO
`EN`	Input	GPIO
`MS1`	Input	GPIO
`MS2`	Input	GPIO
`MS3`	Input	GPIO
`RESET`	Input	GPIO
`SLEEP`	Input	GPIO

How to simulate the STEP/DIR stepper driver in LabWired

Open the Playground at app.labwired.com and place an MCU board.
Add the STEP/DIR stepper driver (catalog type a4988).
Connect VDD and GND to the supply and ground of the board. Use a supply inside the catalog range of 3–5.5 V.
Connect STEP, DIR, EN, MS1, MS2, MS3, RESET and SLEEP to free GPIO pins.
Run the firmware. It drives and reads the pins of the part, and the device model responds on those pins.

Related Board I/O modules

All Board I/O modules · All parts

No manufacturer datasheet is indexed for this part yet, so none is linked here.

Wire it up in Playground → See the full validation matrix