{"product":{"product_id":"B00F1ID0OO","title":"Desmond 250mm DLR-2502 Double Macro Rail Arca Compatible with Bubble Level","price":"38.91","image_url":"https://m.media-amazon.com/images/I/31j1NZa2ObL._SL500_.jpg","url":"https://www.amazon.com/dp/B00F1ID0OO"},"comments":[{"body":"Imagine if there was an open source version of this.\r\n\r\nYou could use an open source laser cut or 3D printed stylus, \r\n\r\nA tripod with an adjustable [double camera mount like this one](https://www.amazon.com/dp/B00F1ID0OO), \r\n\r\nand open source [OpenCV code for object tracking.](https://www.youtube.com/watch?v=CigGvt3DXIw)\r\n\r\n\r\nTo keep things cheap, you might be able to get away with replacing the stylus with a wooden pencil, a ping-pong ball, or a custom tracking pattern you could print on paper and glue to your own custom stylus.   Even a block of wood with a nail protruding would work as long as it was calibrated.","subreddit_name":"3DScanning","author":"brad3378"}]}