Hurra Richard! Wofson WM8753 ; ) doing distance messuring with ultrasonic?

Richard Franks spontificus at
Tue Dec 12 21:13:49 CET 2006

On 12/12/06, Robert Michel <openmoko at> wrote:
> Doing distance messuring with ultrasonic?
> ;))
> 40kHz example:

Interesting article... 3.3m ping is not insignificant, especially in
dark/smoke-filled environments. I remember doing something similar
with LegOS (using the infrared port) with the original LEGO

I wonder if you could also defend against bears or dogs by playing
with these frequencies.. mind you, 6m away from a grizzly, that UI
better be clean and fast. No pressure ;-)


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