The purpose of this project is top provide an Arduino (Pro Micro) based stepper motor controller with two output channels, rotary encoder, LCD display and an RS-232 interface (beside the serial via USB interface of the Pro Micro) with a 3D printed case and a software framework (Arduino Sketch) suitable for many purposes.
The 3D printed case provides different versions of the top and bottom shells.
In case you are not experienced with cable making, you might want to read the essay about this topic on my website.