As the trackball on the uConsole can be tricky, i used the YXBA buttons to move the cursor for more refined movements. This is done via ydotool and ydotoold in order to work with wayland.
References
Important to know that ydotool should be built from source in order to provide relative mouse movements.
Once built and installed, ydotoold should be started as root listening to a socket file, but changing socket ownershop to a target user. I added the following to rc.local