I was automatong pressing 1, 2, 3, 4, 5 in a loop with a knob to adjust the loop time. This was to protest Path of Exile potion management requiring you to constantly press that for hours near end game. Also, to be clear, this is not a good potion strategy in terms of being competitive, it's a survival mechanism.

You can check my own project doing the same. It's a one key keyboard that also can be set to jiggle the mouse a bit.

https://github.com/markomarkovic/nena-ilo-lili