Spherical trackball

prusaprinters

<p>This is a functional one-button USB trackball shaped like a sphere. It does not sit on a desk, you have to hold it in your hand.</p><p>It was made using:</p><ul><li>a 57.2mm billiard ball</li><li>PMW3360 optical sensor</li><li>the PCB from here: <a href="https://github.com/jfedor2/rp2040-pmw3360">https://github.com/jfedor2/rp2040-pmw3360</a></li><li>Omron D2FC mouse button switch (or any other switch with the same footprint)</li><li>this PCB for mounting the switch: <a href="https://github.com/jfedor2/mouse-switch-mount-pcb">https://github.com/jfedor2/mouse-switch-mount-pcb</a></li><li>2.5mm zirconium oxide (or silicon nitride) bearing balls</li><li>M2x4 screws for mounting the button and the switch PCB</li><li>M3x4 screws for mounting the main PCB</li><li>3x10mm wood screws for assembling the case</li></ul><p>The top part needs supports, the others don't.</p>