Besides the graphics, there are two sections of code for this project. One is coded into Unity3D (C#) and takes in accelerometer data to control the game (how fast you move in first person). The other piece of code is in Arduino, and processes the accelerometer data in order to control the fans.

https://github.com/Sophi/WobbleRide

I found the 5V fans to not be very controllable. They needed 3.5 V to turn on at all, and then it was hard for the experiencer to tell if the fans were running fast at full 5 V or slow 3.5 V.

If I made a VR project using fans again, I'd get ones with better resolution. I also think the fans on the head were great for photos, but somewhat impractical. It's already a lot to wear an Oculus headset without the addition of a fan helmet too!