Just visit https://web-riimote.herokuapp.com
on a smartphone (it'll be your controller) and a laptop/desktop (it'll be your display). Works best in Chrome.
Here's a video showing it in action: https://www.youtube.com/watch?v=O2r1-lR6Xq8 .
This project was inspired by the 2016 Android Experiments Winner (https://experiments.withgoogle.com/3d-controller). The 2016 Android Experiments winner turns your smartphone into a 3D controller using Chromecast and an Android app. But `web-riimote` demonstrates that it's possible to do the same with only a web app.
Built with Vue.js and Node.js