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This is a joystick concept I have playing with for a while. :-)
It is based on 3 potentiometers and an Arduino Nano. I have tested with and it works very well. :-) In the pictures I also added rubber bands to force it to the center. The glue holds the rubber bands in place. Yes, it’s not a delicate solution, but it works. :-)
I also added a photo of a test with a drawing arm. I invented a very difficult way of drawing. :-)
You also need: 4X Bearing 624ZZ (diameter 13mm, thickness 5mm, hole 4mm) 1x Bearing 635 (diameter 19mm, thickness 6mm, hole 5mm) 6x M4x20mm and 6 nuts 4x M3x20mm and 4 nuts 2X M3x10mm and 2 nuts 3x potentiometers (B1 P160KN3K) I used 50K Ohm because I had those. See print screen for dimensions
Printed in PET-G, 0.2mm resolution