Mini Stepper Motor - 200 Steps - 20x30mm NEMA-8 Size

This tiny stepper motor is the same quality and step-size as the big NEMA-17's we stock, but so cute so it will work with compact CNC builds. 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 600mA so that it could be driven easily with an Adafruit motor shield for Arduino, Motor Bonnet for Raspberry Pi or our Feather Motor controller & and a wall adapter or lead-acid battery. It's rated for 3.9V, if you have a stepper driver with current limiting, use that to keep the power down. If you have a non-current-limiting driver such as the motor shield/hat/feather we found 5V DC power worked well to power the stepper controller.

The cable has ready-to-go wires - the drive-shaft does not have a D cut in it, but you can clamp to it pretty easily. We drove it with an Adafruit motor shield for Arduino and it hummed along nicely at 50 RPM.Please note: the wire colors on these motors may vary!If you have a motor with Green/Black/Yellow/Red color wires, to connect to our shield/hat/featherwing, put the wires in this order: Black, Red, skip ground if there is one, Green, Yellow.If you have a motor with Yellow/Red/Orange/Blue color wires, to connect to our shield/hat/featherwing, put the wires in this order: Red, Blue, skip ground if there is one, Yellow, Orange.Technical Details Specs:

* Bipolar stepper, requires 2 full H-bridges!

* 4-wire, approx ~16" leads

* 33mm x 20mm rectangle body

* 4mm diameter drive shaft, ~9mm long

* 3.9V rated voltage (you can drive it at a lower voltage, but the torque will drop) at 600mA max current

* 2.8 oz*in, 20 mN*m, 0.2 Kg*cm holding torque per phase

* ~ 7 ohms per winding

* Diagram