Build your own Ultrasonic Range Finder

[majolsurf] has posted a rather neat home made US range finder up on his site, majolsurf.net

Unlike commercial devices; this is cheap, easy to configure to exact needs and will give you the full reflectance pattern (not just the distance to the closest object).

I know I will be trying something similar in the future, I am rather a fan of the maxbotix sensors but they are rather expensive and the full reflectance pattern could be very useful.

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