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Here is a simple way to implement distance sensing and an Arduino. The website has more pictures and all the Arduino code so you can easily make one for yourself.

I bought a Sharp GP2Y0A21YK0F Distance Sensor to use in my robot. It was very easy to see the data returned in a serial console window, but I thought it would be cool to see the distance in zones represented by colors from a tricolor LED. Then you would not need to be connected to the computer to tell distance. Green would indicate a safe distance, yellow would represent a cautionary distance and red would be for distances that would require my robot to take evasive action.

Read more about Sharp IR sensor with color feedback

Marc de Vinck

I’m currently working full time as the Dexter F. Baker Professor of Practice in Creativity in the Masters of Engineering in Technical Entrepreneurship Program at Lehigh University. I’m also an avid product designer, kit maker, author, father, tinkerer, and member of the MAKE Technical Advisory board.


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