This amazing Raspberry Pi project lets you control a bulb's brightness using your brain
It's actually pretty good for meditation.

We've seen a ton of different Raspberry Pi projects here on XDA, but none of them have used a brain scanner to control a piece of hardware. Well, that has just changed, as we caught wind of this amazing cyberdeck brain scanner. It can read brain waves and translate them into specific actions, and as we're about to see, it has helped its own inventor keep his mind peaceful and serene during his meditation sessions.