wokwi-stepper-motor Reference
A bipolar stepper motor
Pin names
| Name | Description |
|---|---|
| A- | Coil A negative signal |
| A+ | Coil A positive signal |
| B+ | Coil B positive signal |
| B- | Coil B negative signal |
Attributes
| Name | Description | Default value |
|---|---|---|
| arrow | Displays an arrow to indicate the position of the stepper. Set to the color of the arrow, e.g. "orange" | "" |
| display | What number to display on the stepper? Valid values "steps", "angle" (in degrees), "none" | "steps" |
| gearRatio | The gear ratio of the motor. set to "1:1" for 200 steps/revolution, "2:1" for 400 steps/revolution, etc. | "1:1" |
| size | The NEMA standard size of the motor. Valid values: "8", "11", "14", "17", "23", "34" | "23" |
Examples
| Result | Attrs |
|---|---|
{ "size": "17" } | |
{ "display": "steps" } | |
{ "display": "angle" } | |
{ "display": "none" } | |
{ "arrow": "orange" } |
Using the stepper motor
When using a stepper motor you need a driver chip that can supply large amounts of current to the motor's coils. Wokwi supports the common A4988 driver board. You can also wire the stepper motor directly to your microcontroller. Wokwi uses a digital simulation engine, so the coil current is not taken into account.
You can use a variety of Arduino libraries to control the stepper motor: Stepper, AccelStepper, etc.
Simulation Behavior
The stepper motor moves 1.8 degrees per step (200 steps per revolution). The motor also supports half-stepping (0.9 degrees per step / 400 steps per revolution). You can even use smaller microsteps (e.g. 1/4 or 1/8 step), but the simulated motor only displays the angle in half-step resolution. For more information, check out the A4988 microstepping configuration table.