Answers.Body: <p>Since everything is fair in love and war, you could do this:</p>
  
  <p>Using an <a href="http://www.arduino.cc/en/Main/arduinoBoardUno" rel="nofollow noreferrer">Arduino</a> and this <a href="http://shop.tkjelectronics.dk/product_info.php?products_id=29" rel="nofollow noreferrer">NXT compatible shield</a>, you could program it to send a continuous burst at 11494,253Hz creating noise in the frequency range of the NXT Ultrasonic sensor.</p>
  
  <p><img src="https://i.sstatic.net/Q7YJP.jpg" alt="enter image description here"></p>
  
  <p><a href="http://blog.tkjelectronics.dk/2011/10/nxt-shield-ver2/" rel="nofollow noreferrer">This site</a> 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.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2012-11-29T08:19:21.747Z
Answers.Text: Depending on the contest, non-LEGO material might be explicitly excluded - unless you hide it in your pocket or something.
Answers.UserDisplayName: Joubarc
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2012-11-29T12:25:51.180Z
Answers.Text: Assuming of course that it is an accepted countermeasure in that competition. :)
Answers.UserDisplayName: pcantin
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2012-11-29T03:03:45.590Z
Answers.LastActivityDate: 2012-11-29T03:03:45.590Z
Answers.UserDisplayName: pcantin
Body: <p>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.</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2012-11-02T19:26:45.270Z
Comments.Text: Isn't that... *cheating*?
Comments.UserDisplayName: shea
Tags: <nxt><mindstorms><building>
Title: Is there a documented process in 'Jamming' an NXT Ultrasonic sensor?
UserDisplayName: Andres
ThreadText: # Is there a documented process in 'Jamming' an NXT Ultrasonic sensor?
  
  (Asked by: username_0 on 2012-10-06)
  
  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.
  
  **Tags:** nxt, mindstorms, building
  > **Comments:**
  > **username_1**: Isn't that... *cheating*?  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_2 on 2012-11-29. Score: 3
  
  Since everything is fair in love and war, you could do this:
  
  Using an [Arduino](http://www.arduino.cc/en/Main/arduinoBoardUno) and this [NXT compatible shield](http://shop.tkjelectronics.dk/product_info.php?products_id=29), 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](https://i.sstatic.net/Q7YJP.jpg)
  
  [This site](http://blog.tkjelectronics.dk/2011/10/nxt-shield-ver2/) 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.
  
  > **Comments:**
  > **username_3**: Depending on the contest, non-LEGO material might be explicitly excluded - unless you hide it in your pocket or something.  
  > **username_2**: Assuming of course that it is an accepted countermeasure in that competition. :)  
  
  ---
  
  