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Hackaday Podcast 213: Not Your Grandfather’s Grandfather Clock, The Engineering Behind Art, Hydrogen Powered Flight 6 Comments Posted in Tablet Hacks Tagged digital art, drawing tablet, graphics tablet, image, ipad Post navigation Alternatively, if you prefer to draw directly, consider whipping up your own screen-based drawing tablet. The project takes advantage of a simple physical effect in order to create a great artistic tool. A series of mirrors are then assembled in an enclosure, allowing the iPad to be mounted with the camera having a good view of the glass painting area. The build requires some finesse, with the lamination of the special Fresnel film onto glass using liquid optically clear adhesive, or LOCA. The app also allows one to experiment with all manner of fancy brush effects, too. The corresponding Light Strokes app on the iPad turns this into the pretty pixels of your creation. Thus, simply wetting a paintbrush, sponge, or even a finger, allows one to paint quite authentically on the surface of the prism. This is via the principle known as total internal reflection. This allows the camera to see only the parts of a paint brush, sponge, or other implement, as they make contact with the surface of the prism itself. The system uses a Fresnel prism in view of the iPad’s camera. developed another method, with Light Strokes for the iPad letting one “paint” with real paint brushes instead! However, they all typically involve using some sort of special stylus for input. Drawing tablets are a great way to make digital art, and iPads and other tablets are similarly popular in this area.

Digital painting brushes