Yes, you can connect the projector wirelessly with the laptop if you are using the DIY projector. Just put the black matte paper on the outer and inner sides of a big laptop size cardboard box. Now, take a mirror and cut it the same size as the display screen. It has to be done in the same color as the laptop screen. Now, place it on one end of the cardboard box where you have to face it to the wall. And, place your laptop in the box on the other end at a good distance. Now, turn on the laptop and the screen will reflect through the mirror and the display will be on the wall.