Trackball Mod part 2
Mouse rotary encoder disks have been liberated from their plastic spindles. They each were then mounted on a 10-32 bolt with a spacer and a nut and screwed into the end of a trackball spindle. Next thing to make are mounts and the new circuit boards that will hold the sensors and LEDs. They will mount to the four tapped holes on the spindle bearing column. Some adjustment will be necessary to the spacers as they’re making the disks wobble. I think I will machine down the diameter of the screw heads. They will probably touch the sensors if not reduced. Also, there is about 1/32 ” end to end play in the X axis spindle. A washer will be added to the space next to the bearing. to remove this movement.