Mindsensors ("Your number one source for quality devices and accessories for robotics!") has a whole bunch of cool third-party sensors for Lego Mindstorms NXT, including pressure and temperature sensors, long, medium and short-range infrared, and a Sony Playstation 2 controller interface. But what’s even cooler is what’s coming soon: a camera that can support tracking of 8 objects at a time. Here’s a video of the prototype in action:
