Hi everybody,
Newbie here, not with electronics, with this forum. So hopefully I do this right.
I have researched thorougly, want to check if my conclusion is sound.
I am using an Arduino Uno, Arduino IDE ver 1.8.9.
Powering Nema 17 with a 3 amp P.S at 12v.
Driving Nema with the A4988 driver with a heatsink.
Wired everything up according to this instructional:
Did everything by the book, Nema only turns CW.
I also supplied the Dir pin on the A4988 driver straight from 5V, also tried 0v, does not make a difference.
My conclusion is, unless this motor is wired differently, it must be the driver.
Nema specs:
200 steps per revolution (1.8 deg/step)
2 Phase Bipolar 4 lead wire (mine has 6 wires)
Rated Voltage 3.36V
Rated Current 1.68A
Phase Resistance: 1.65± 10% (20º C)
Phase inductance: 3.8mH ± 20% (1kHz 1 V rms)
Holding torque: 0.44Nm (62 oz.in)
Netram site shows above specs, but the motor that I got has 6 wires, with a plug exactly as in the instructional.
What also worries me, is that the motor will not turn if supplied with 5v, yet specs says 3v36??
Any ideas??
And thanks very much, please advise if I did something wrong with the post, it is my first time.