If you open the app, you should see a small remote icon floating in the bottom right of the screen. Tapping on that should connect you to any Android/Google TVs that are on the same Wi-Fi network as ...

The Ploopy Knob is a 3D-printed, open-source rotary encoder featuring a high-precision sensor that runs QMK firmware. Or put another way, it's a multi-purpose dial controller for your computer.