SparkFun Big Easy Driver Brand_Advancer Technologies Ambient operating temperature: -25ºC –

Ambient operating temperature: -25ºC – 45ºC

This premium 4 channel 10A relay breakout board can handle it

By using a solar panel and PiJuice

4 mm Precision Bits: Phillips – 000

But you either need an Arduino or they might be a little too big and powerful for your needs

SparkFun Big Easy Driver Brand_Advancer Technologies Ambient operating temperature: -25ºC –The Big Easy Driver, designed by Brian Schmalz, is a stepper motor driver board for bi polar stepper motors up to a max 2A phase. It is based on the Allegro A4988 stepper driver chip. It's the next version of the popular Easy Driver board. Each Big Easy Driver can drive up to a max of 2A per phase of a bi polar stepper motor. It is a chopper microstepping driver which defaults to 16 step microstepping mode. It can take a maximum motor drive voltage of