![\"FullSizeRender](\"http:\/\/www.aaronparsekian.com\/wp-content\/uploads\/2016\/03\/FullSizeRender-19.jpg\")
<\/a>One was the VGA converter, the second was the analog composite video DAC:<\/p>\n Now that the projector was accepting video it was time to start on the mechanisms! I always try things with cardboard first:<\/p>\n I glued a gear onto the focus ring to control the projectors focus remotely. It took two tries to get it centered:<\/p>\n My first of many mechanical mistakes on this project was un-supported shafts. My second mistake was my gear ratio. I eventually\u00a0moved up to a 36 tooth gear on the servo instead:<\/p>\n I decided to build all the structure of my new robot friend out of scrap acrylic. The three laser cutters in the shop were pretty booked, so I cut everything on the scroll saw.<\/p>\n My second big mechanical mistake was undersizing the PAN stepper motor. The light was not budging a millimeter using it. Unfortunately I had to chop open the base the night before to fit a larger stepper motor to move the light.<\/p>\n I had to cut the shaft down, and notch it so that it didn’t slip on the 36t plastic gear. I did this with the thin cut-off wheel on a dremel. I was pretty happy with the result!<\/p>\n Later on I redesigned the base to fit the larger stepper motor. This is my first time working with T-slot tubing. This stuff is great!<\/p>\n I also went ahead and sleeved all the wiring on the project:<\/p>\n Of course in the process I tore a pad off the PCB of one of my servos! Of course I only bought two. Another repair for\u00a0my robot friend:<\/p>\n Im very happy with the final product. The full rotation is a great addition.<\/p>\n<\/a><\/a><\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n