Chess Robot AR4 MK3

Hi everyone,

I'd like to share my experiment with AR4 MK3 Robot.

This is a chess robot using AR4 MK3 full 3d printed part.

Actually I have problem related J1 movement, in cartesian, if robot move Y little bit about 30mm, J1 does not move so, robot move to wrong position. Maybe because of big backlash in gear or something.

My temporary solution is, before go to target, I move robot to a temporary position, so when go to target position, J1 can move more. the result is more accurate.