Hi,
I found some used stepper motors from streets of our local electronics market, which are in working condition.
All I know about those motors are
1. NEMA 17 form factor
2. 2 phase bipolar (4 wire)
3. coil resistance 2.1 ohm.
Now as per Ohm's law if I assume that its current rating is ~1.5 A (which I think more of a standard in these types of motor), then the voltage rating comes as ~3.15 v (2.1*1.5).
I understand that I have to use constant current chopper driver, that would reduce the driver at standstill mode, and increase voltage while running.
The question is which driver I safely use to drive these motors. Can DRV8825 be an option? If so what psu I should use to drive it. Can I use a Computer SMPS?
Additionally I have a L293d shield. Can I use this shield at least to drive the motor to see it running. Can I add a small hi power resistance with the motor coil in series to achieve this?
Thanks in advance.
Debojit
I found some used stepper motors from streets of our local electronics market, which are in working condition.
All I know about those motors are
1. NEMA 17 form factor
2. 2 phase bipolar (4 wire)
3. coil resistance 2.1 ohm.
Now as per Ohm's law if I assume that its current rating is ~1.5 A (which I think more of a standard in these types of motor), then the voltage rating comes as ~3.15 v (2.1*1.5).
I understand that I have to use constant current chopper driver, that would reduce the driver at standstill mode, and increase voltage while running.
The question is which driver I safely use to drive these motors. Can DRV8825 be an option? If so what psu I should use to drive it. Can I use a Computer SMPS?
Additionally I have a L293d shield. Can I use this shield at least to drive the motor to see it running. Can I add a small hi power resistance with the motor coil in series to achieve this?
Thanks in advance.
Debojit