Software - Peter Mobbs
https://petermobbs.wordpress.com/2014/10/08/an-arduino-controlled-focus-rail
Hardware:
Arduino UNO
LCD Keypad Shield
Pololu A4988 + Shield
APM Power Module
2 x EL357N-C Optocoupler Isolation Module
Rail:
THK KR20
NEMA 17 Stepper Motor
Wiring diagram:
https://forum.macro.zone/thread-85.html
