I have built a diy stepper-motor driven focuser ; it is controlled through a python script running on a raspberry (script attached). Basically, it uses 4 arrow keys (up/down to set speed, left/right to move) ; its very efficient on the field ; I mostly run it remotely through ssh and screen (see video for a small demo).
It is very basic, inputs are key strokes, outputs are step and dir to gpio pins and the step counter that is displayed.
I am considering integrating it as an indi driver, but I dont want to reinvent the wheel. Is there such thing as an existing indi driver for that kind of gpio + keyboard focuser ?