Smartphone and laser attachment form cheap rangefinder

A team of researchers at the MIT Computer Science and Artificial Intelligence Laboratory (CSAIL) led by Li-Shiuan Peh has come up with a new infrared depth-sensing system. The new system, which works outdoors as well as in, was built by attaching a US 10 laser to a smartphone, with MIT saying the inexpensive approach could be used to convert conventional personal vehicles, such as wheelchairs and golf carts, into autonomous ones. Inexpensive rangefinding devices, such as the Microsoft Kinect, have been a great help to robotics engineers. Using the off-the-shelf product that relies on an infrared laser to measure distance, they allow for rapid prototyping and the ability to create robots that can sense and navigate in their environments without having to constantly reinvent the necessary technology. Unfortunately, Kinect and similar infrared-based systems tend to be a bit fussy when it comes to ambient light conditions.