For a 1.5A steppers DRV8825 modules might be a better choice, less likely to shutdown through overheating. Thus if you are stuck with A4988's a slightly lower current setting might be needed for reliable operation, perhaps 1.3A.
For a 1.5A steppers DRV8825 modules might be a better choice, less likely to shutdown through overheating. Thus if you are stuck with A4988's a slightly lower current setting might be needed for reliable operation, perhaps 1.3A.