Barn Door Tracker - merged parts for big printers

I merged the separted parts of fermunoz very nice Barn Door Tracker for Astrophotography (https://www.thingiverse.com/thing:1133193) into two big ones to be printed on bigger printers.

I integrated the 28byj-48 stepper remix and the scope remix.

https://www.thingiverse.com/thing:2841827
https://www.thingiverse.com/thing:2982009


I also created an enclosure for the electronics, using a lcd keypad shield, an arduino uno and a cheap 28byj-48 stepper (with half steps using accelstepper l