UPDATE 2018-May-28: Uploaded firmware source+hex, thing file "StarScan_FW.zip". Compiled using IAR but can be easily adopted as the source is really straight. Not the best stepper driver management but was OK for my purposes.
Controller for the StarScan Dub turntable published earlier. You can check videos in "Post-Printing" section for the StarScan in action. I do understand that without hardware ("Arduino mini" = Atmega 328P + A4988 Stepper driver + LCD 1602 + push-buttons + "Mini 360" step-down etc) and firmware all that not so usefull but at least that is fun :) Videos does not show camera connected as I do use it to shoot the videos.