Showing posts with label Electric Rat repellent. Show all posts
Showing posts with label Electric Rat repellent. Show all posts
Tuesday, September 6, 2011
Electric Rat repellent
Students
of Electrical Engineering, Faculty of Engineering, State University of
Yogyakarta Soni Maringgih develop microcontroller-based mouse repellent
devices that generate sound waves with very high or ultrasonic
frequencies.
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