- Prepare the parts.
- Solder leds. Put the cut-off leg of led at the pad with a white dot.
- Put a little solder on the pads for switch sockets.
- Solder switch sockets.
- Put trackball sensor at the bottom of pcb such as the lens faces the direction of space key, and solder it.
- Put rotary encoder, and solder it.
- Put and screw knob to encoder.
- Put and push ceramic balls to three caves of trackball cup.
- Push heat insert into the hole with the bottom of trackball cup by the solder iron.
- Put sensor mirror to trackball sensor.
- Cover sensor mirror with trackball cup. Then, screw trackball cup from the bottom of pcb.
- Check your work.
- Finally, put your favorite pcb-mounted stabs.
