Over at the fftarduino blog they are working on a laser rangefinder tracking system, powered by an Arduino board that uses a pan/tilt device mounted with lasers and a simple TTL-based digital camera module. Although it's a work in progress, the results so far are impressive and an interesting vision of what could be possible in the future:
For more information and motivation, visit the project blog site for code, details and the maths behind the control system. And we're on twitter and Google+, so follow us for news and product updates as well.
When designing your own Arduino-embedded laser wea.. rangefinders, consider our Freetronics LeoStick. Apart from being one of the smallest Arduino-compatibles on the market with USB, it also has an onboard RGB LED and piezo for sound and knock detection: