Finally, the electronics of the project started to wok.

I wrote the whole code in TI CCS. It is a long. I put incredible amount of work into it. ~30 lines of code including declarations, in around 10 mins :-D

Then I tried to set the current limit of the stepper driver. Almost fried it when I connected the required 12V onto the 3.3V power rail but survived. Luckily the MCU was not already in the socket.

Used this video for the setup:

https://www.pololu.com/blog/484/video-setting-the-current-limit-on-pololu-stepper-motor-driver-carriers

As the whole circuit started to work from my Lab PSU, finally soldered the power supply in. Last check. Still works:

What left:

• Some wiring
• Tweaking the motor speed and the micro stepping
• Minimal mechanical things like timing belt mount, mounting clamps, end stop insert, etc.
• Mounting the lighting
• Finishing the belt drive

There is one thing set me back, that the driving pulley and the belt tension spring didn't arrived yet. As some things I ordered together with it, and things I ordered weeks later already arrived, I'm quite sure, that the bloody Post lost them. Already ordered some from different suppliers, and will complain when the time come.

So, I'm waiting....