Ultrasonic 3D Mouse - Cornell ECE 4760 Final Project

We developed an interface device for the computer that provides 3D coordinates of the hand-held unit. This project was undertaken as the final 5-week assignment in ECE 4760 at Cornell University.

The project webpage includes full schematic, microcontroller software and an API so that the device can be used in any C++ program.

Created by Karl Gluck and David DeTomaso

http://courses.cit.cornell.edu/ee476/FinalProjects/s2009/kwg8_dmd54/kwg8_dmd5...

Category:

Science & Technology

Tags:

• 3d
• mouse
• computer
• ece
• 476
• final project
• engineering

[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.

[chestergrater]

Whats with the crackling/buzzing?

[karlgluck]

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

[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!

[mike6789k]

this is pretty good!

nice work :D