building dlp printer

I was looking at some videos about dlp printers cause they print a lot faster and can can do better resolution, and I found this instructables link http://www.instructables.com/id/Chimera-60-DLP-resin-3d-printer/step9/Electronics/ I was curious to see if anyone has built their own dlp printer, and if so if you have any types because $60 for a printer like this, even a small one, would be a great deal.