I am using the A4988 Board. I have hooked a Nema 23 Bi-polor motor that is 1.8 degrees/step and rated at 1.5 Amps /Phase.
My logical power supply is set at 4.2 volts, well within the limits of [3.3v - 5.5v]. I created a Voltagedoubler circuit to get around 8v for the VMot Pin. When I take the volt meter to read to VMOT pin I am getting around 0.914 volts. Obvious not enough to drive the motor.
Secondly, the power supply is showing 0.00Amps at 4.2 logical voltage ??
What am I doing wrong ??
Thank you in advance