The A4988 Stepper Motor Driver Carrier Board
All specs are by default described for the
PCB only, without pin headers, heat sink, ..
| Imperial | Metric | |
|---|---|---|
| 🡘 | 0.6" |
15.24 mm |
| 🡙 | 0.8" |
20.32 mm |
 |
20.06 gr |
1.3 g |
⚠ The PCB does not have Reverse Voltage Protection
Maximum continues current per phase.
| 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 |
| Imperial | Metric |
|---|---|
 |
 |
| Resistors | Value | Capacitors | Value |
|---|---|---|---|
| R1 | 68mΩ |
C1 | 4.7μF |
| R2 | C2 | 0.1μF |
|
| R3 | 100kΩ |
C3 | 0.1μF |
| R4 | 10kΩ |
C4 | 0.1μF |
| R5 | 20kΩ |
C5 | 0.1μF |
| R6 | 100kΩ |
C6 | 0.22μF |
| R7 | ~ | C7 | 0.22μF |