A stepper motor to satisfy all your robotics needs! This 4-wire bipolar stepper has 1.8° per step for smooth motion and 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 another motor driver) and a wall adapter or lead-acid battery.

Some nice details include a ready-to-go cable and a machined drive shaft (so you can easily attach stuff). We drove it with an Adafruit motor shield for Arduino and it hummed along nicely at 50 RPM. To connect to our shield, put the wires in this order: Red, Yellow, skip ground, Green, Brown (or Gray)

Technical details

Datasheet
Declaration of Conformity
RoHS
200 steps per revolution, 1.8 degrees
Coil #1: Red & Yellow wire pair. Coil #2 Green & Brown/Gray wire pair.
Bipolar stepper, requires 2 full H-bridges!
4-wire, 8 inch leads
42mm/1.65" square body
31mm/1.22" square mounting holes, 3mm metric screws (M3)
5mm diameter drive shaft, 24mm long, with a machined flat
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

Products

Stepper Motor - NEMA-17 size - 200 steps/rev, 12V 350mA

Synthetos gShield (grblShield) V5