@davidrevoy what is this yellow remote control at the bottom of the picture ?
@davidou Hey, it's a https://www.8bitdo.com/zero/ gamepad; this one has a 'keyboard mode' where the pad returns random letters. I kept this mode and customised it with this method https://www.davidrevoy.com/article989/how-to-customise-a-usb-numeric-keypad-under-gnulinux , so now it's a wireless shortcut remote while I draw. It's ok, a bit tiny for my big hands, and it also loose battery after 3 full days of painting. But it charge quickly, and pressing start it connect to bluetooth quickly too. So, it is still convenient.