I9 projector to setbox

[c.nagarajan]

How to connect set top box to i9 projector for viewing TV

 

[hang-the-9]

Need exact models and brands of your devices.

 

[americanaudiophile]

Projector has HDMI and most likely so does the set to box. VGA seems to be the only other option that the projector has.
A converter would be needed if the set top box doesn't have HDMI.
By the way you do know that the i9 is only 800 x 600 resolution. It will accept up to 1080p but will downconvert the video to SD.