Mercury stepper motor SM-42BYG011-25

Our lab has some bipolar stepper motors. Here is their datasheet.

stepper

Image cc-by-nc-sa Sparkfun

Main features:

– two coils (Red & Green and Yellow & Blue)
– 200 steps for a rotation (1.8 degrees)
-12 Volts
– 0,23 N.m (kg/cm) Torque
– weight 200 g

You set this motor up to the Adafruit shield very simply: red and green connect to the motor 1, blue and yellow to the motor 2. With the Adafruit AFMotor and AccelStepper libraries it is easy to control this in Arduino using simple commands.

Example for one stepper motor and AFMotor library

Example for two stepper motors with the AccelStepper library