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Message: <blockquote data-quote="Janx" data-source="post: 5280041" data-attributes="member: 8835">it seems a few experiments with a mirror would be in order.Put the projector on a table edge, facing perpendicular to a wall.  Now bring a mirror into range and angle it to bring the image onto the wall.Verify you can control the focus with the projector's slider and distance of the mirror to the projector and wall.  Don't forget to see if your projector has paralax compensation.  A decent projector should have controls to let you warp the image to counter the distortion of not having the lense squared to the wall.now build a small platform (a board) with a notch cut out for the mirror to sit over at a 45 degree angle.Then mount the projector on the board, and build an adjustable mount for the mirror to float over the notch.Now take a camera tripod and mount a nut in the platform that fits the screw threading on the tripod.  The tripod will hold your projector platform.Put the tripod on the floor next to the table and raise it up.  Adjust the angle of the mirror and the parallax, and you should be able to get it to hit the table and be squared and in focus.  Change the height to enlarge the image to get 1" squares (don't just fiddle with the image or the video resolution, you have multiple mechanisims available).the trickiest part of the build should be building a mount for the mirror that also lets you adjust it's angle.</blockquote>