easydriver

reference

http://www.schmalzhaus.com/EasyDriver/Examples/EasyDriverExamples.html

http://www.airspayce.com/mikem/arduino/AccelStepper/index.html

http://www.schmalzhaus.com/EasyDriver/

MS1/MS2 : These digital inputs control the microstepping mode. Possible settings are (MS1/MS2) : full step (0,0), half step (1,0), 1/4 step (0,1), and 1/8 step (1,1 : default).

https://learn.sparkfun.com/tutorials/easy-driver-hook-up-guide