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# A4988 | ||
The A4988 Stepper Motor Driver Carrier Board | ||
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![](./Files/Board.png) | ||
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*All specs are by default described for the*<br> | ||
*PCB only, without pin headers, heat sink, ..* | ||
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--- | ||
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### General Specs | ||
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| | Imperial | Metric | | ||
|:---------------------------:|:--------:|:--------:| | ||
| **🡘** | 0.6" | 15.24 mm | | ||
| **🡙** | 0.8" | 20.32 mm | | ||
|![Weight](./Files/Weight.png)| 20.06 gr | 1.3 g | | ||
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--- | ||
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### Power Specs | ||
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⚠ **The PCB does not have Reverse Voltage Protection** | ||
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![](./Files/Power1.png) | ||
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**Maximum continues current per phase.** | ||
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![](./Files/Power2.png) | ||
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--- | ||
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### Step Types | ||
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| 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 | | ||
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--- | ||
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### Dimensions | ||
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| Imperial | Metric | | ||
| :---------------------: | :-------------------: | | ||
|![](./Files/Imperial.png)|![](./Files/Metric.png)| |