The One + Phone Projector is the easiest and simplest way to enjoy your movies and photos, just attach your Oneplus One and make sure to turn off the lights... don't forget the popcorn.The principle of the projector is to enlarge the light source from the screen of the device, make sure to set the brightness full and turn off the auto-adjust. the image go to the mirror and this way correct the output. To focus just slide the front base.The materials needed for this apart the 3d printed parts, are very cheap, just a magnifier of 75mm diameter, and a mirror with 97mm x 130mm.Please ask any question and vote if you like the design