Stepper motor – NEMA-17 size – 200 steps/rev, 12V 350mA
A stepper motor to satisfy all your robotics needs! This 4-wire bipolar stepper has 1.8° per step for smooth motion and a nice holding torque. The motor was specified to have a max current of 350mA so that it could be driven easily with an Adafruit motor shield for Arduino or other motor driver, and a wall adapter or lead-acid battery.
We drove it with an Adafruit DC & Stepper Motor HAT for Raspberry Pi and it hummed along nicely at 50 RPM. To connect to the Adafruit Motor Shield, put the wires in this order: Red, Yellow, skip ground, Green, Brown (or Gray). Here are two common motor shields to drive this motor;
- 200 steps per revolution, 1.8 degrees
- Coil #1: Red & Yellow wire pair. Coil #2 Green & Brown/Gray wire pair.
- 4-Wire, 30cm/12″ wire leads
- Bipolar stepper, requires 2 full H-bridges!
- 42mm/1.65″ square body
- 31mm/1.22″ square mounting holes, 3mm metric screws (M3)
- 5mm diameter drive shaft, 22mm long
- 12V rated voltage (you can drive it at a lower voltage, but the torque will drop) at 350mA max current
- 28 oz*in, 20 N*cm, 2 Kg*cm holding torque per phase
- 35 ohms per winding