I recently upgraded my Ender 3 with Klipper for much better performance but that also means I can no longer control it from the button and LCD and I want to make a macropad to give me control when I am in front of the the printer and not have to refer to my computer every time I want to check how long is left for the print or stop/start/pause. I plan to include enough button switches for basic control and maybe some extra for custom G-Code macros. Plus the OLED display to show the time left until completion and an LED string showing the print progress so far.