I went with the less DIY model by getting a UHK with a trackball thumb module: https://ultimatehackingkeyboard.com/product/trackball https://ultimatehackingkeyb

I went with the less DIY model by getting a UHK with a trackball thumb module: https://ultimatehackingkeyboard.com/product/trackball https://ultimatehackingkeyboard.com/product/trackball