Ultrasonic 3D Mouse - Cornell ECE 4760 Final Project

[PacoBell]

How does this compare with triangulating with IR LEDs? Is one more precise than the other?

[karlgluck]

The Wiimote does it using an IR camera and some accelerometers. It does complex image processing in combination with accelerometer readings to find its position in 3d. Precision is based on the camera's resolution and distance to the IR LEDs.

This device's precision is based only on the ultrasound frequency. 40 kHz gives approximately 1 cm resolution.

[markgluck]

Very neat! Of course I didn't hear anything about it until it was done - parents are always the last to know.. ;-)

[jstich]

nice!

[chestergrater]

Whats with the crackling/buzzing?

[karlgluck]

Oh, that's just the camera moving around. (If you're wondering, the device itself is silent)

[mike6789k]

this is pretty good!

nice work :D