Star tracker

I had some spare acrylic from another project, so I decided to get this project underway. The basic idea is very similar to Alex Kuzmuk's design. https://kukuruku.co/post/diy-an-astro-tracker-in-two-nights/I desired a simple and reliable star tracker, that was also small enough to carry, particularly for hiking or travelling.The use of the Arduino provides a lot of flexibility in gear and thread choice. Mine uses an M6 thread to drive the barn door.You may need to adapt it to your tripod/camera