Simple enclosure to contain the controlling board (Arduino Nano) and set of 3 balanced supercapacitors for my Belt Tensioner Servo system. Mounting holes are M6 providing multiple options to mount to Sim Rigs (4040/3030 in the current case).

Has integrated place for Arduino Nano board (should work both with mini and and type C USB ports) and 16mm button (connected on the Reset Pin). Arduino lid just slides in.

On my printer I did not need to use supports.

PSU itself is at 8 V, generic step down module placed somewhere else on the rig. Parameters are in the documentation.

Demo video, instructions, code on GitHub, parts, etc.  - above in the links