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Just trying to gather a bit of information for a competition between a few other NXT builds, I was wondering if there was a way to make the ultrasonic sensor completely useless for the competition as I'm sure it would put a new spin to my opponents.

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    Isn't that... cheating?
    – shea
    Nov 2, 2012 at 19:26

1 Answer 1

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Since everything is fair in love and war, you could do this:

Using an Arduino and this NXT compatible shield, you could program it to send a continuous burst at 11494,253Hz creating noise in the frequency range of the NXT Ultrasonic sensor.

enter image description here

This site shows how to use the Shield with the sensor. All you have to do is modify the code to create a long burst instead of a controlled ping.

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    Depending on the contest, non-LEGO material might be explicitly excluded - unless you hide it in your pocket or something.
    – Joubarc
    Nov 29, 2012 at 8:19
  • Assuming of course that it is an accepted countermeasure in that competition. :)
    – pcantin
    Nov 29, 2012 at 12:25

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