I’ve made an Arduino thing that can wirelessly talk to a mobile device over BLE and can now meter the revolutions of a wheel with an optical tachometer. I’m using these two hardware features to make a virtual reality (VR) cycling experience and I’ve got a working demo to share! Here’s how this works…
Source: A VR Cycling Experience for $40
The Google Cardboard viewer didn’t work for the iPhone 6S the author used, but might fit your phone.
There is a brief mention of competing products – CompuTrainer is the one I’m most familiar with, and I believe CompuTrainer setups start at ~$1,000 (outside of bike and TV). I wonder if you can program it to ride down the streets of google street view…
My Warfarin Diet 