Through this new technology, you can spray a sign on your bedroom’s wall to turn on, turn off, and adjust the brightness of a lightbulb, or you can turn your sofa into a TV remote control.

The blogger attached the mind-reading Jedi helmet to the transmitter from a VCR remote control, wiring them both together using an open source system called Arduino.

All you need to do is THINK about changing the channel ( Image: Getty Images) By Jasper Hamill 17:02, 23 Feb 2015 ...