http://www.touchfactors.com Human Factors of Multi-Touch Displays Sat, 25 Apr 2009 00:23:01 +0000 http://backend.userland.com/rss092 en We created a fully assembled multi-touch surface for the first time the other day. It looks rather nice, and produces good blobs! We believe there are a number of innovations in this process, which really simplified the construction time and cost: Use of infrared LED ribbons as our IR Light source Use ... http://www.touchfactors.com/?p=103 Once we had made a small IR LED array and modified an X-Box Live camera to be an IR Cam, we found that testing for blobs was a pain in our backside.  We could get blobs, but not every time... we had too many moving pieces.  We figured that it ... http://www.touchfactors.com/?p=89 We did a quick test of the infrared LED ribbons to see how well they generated blobs. For this test, we just wrapped part of the LED ribbon reel around the acrylic. In reality, you would trim the ribbon to an L-shaped length. We're still trying to see if a ... http://www.touchfactors.com/?p=119 Earlier this year, I was working with flexible LED ribbons for a research project investigating telepresence lighting and glare. I found that the ribbons, connectors and power supplies from EnvironmentalLights.com were pretty handy, and saved a lot of time. So when Jon and I began to build the infrared LED lighting ... http://www.touchfactors.com/?p=68 The first lesson we learned in our experiments is not to buy IR LEDs from a bin at a bulk electronics store unless they have the specs.  We bought 50 of these little black IR LEDs for 15¢ a piece.  We were hoping that since they came lined up in ... http://www.touchfactors.com/?p=85