Answers.Body: <p>This honestly just sounds like a faulty cable. See the NXT cable pinout below. If wire 5 or 6 is damaged it will cause digital I2C sensors to fail. This includes the color and ultrasonic sensors, but not the (analog) touch sensors.  </p>
  
  <p>Also, according to <a href="http://www.brickengineer.com/pages/2008/09/05/lego-nxt-motor-wiring/" rel="nofollow noreferrer">this source</a>, pin 5 and 6 are also used for the motor encoders. So damage to 5 or 6 will cause rotation feedback to fail.  </p>
  
  <p>This sounds exactly like the issues you are having. The solution? Try a different cable to confirm that the issue is a faulty wire, then (optionally) buy new cables from <a href="http://www.mindsensors.com/51-cables-connectors" rel="nofollow noreferrer">here</a>.</p>
  
  <p><a href="https://i.sstatic.net/e0z4V.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/e0z4V.png" alt="NXT Wire Pinout"></a></p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-06-07T05:03:01.713Z
Answers.LastActivityDate: 2019-06-07T05:03:01.713Z
Answers.UserDisplayName: MindS1
Answers.Body: <p>Check for 5V on the two middle pins of the motor connectors (plug a cable into the brick, no motor on the other end,  and measure volatege on the contacts of the open other end). NXT/EV3 have separate power to all the sensors, if there's a short (failed capacitor or similar) or the power chip failed then the brick will still work, but the sensors won't get power.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2018-12-05T12:40:02.187Z
Answers.LastActivityDate: 2018-12-05T12:40:02.187Z
Answers.UserDisplayName: Marek Lewandowski
Body: <p>I'm looking for advice. I pulled my Mindstorms 8547 kit out of storage and started to play with it after several years of inactivity. </p>
  
  <p>I found that the Color Sensor, the Ultra Sonic Sensor, and the position read back on motors all do not function. I downloaded the latest software and firmware version 1.31.</p>
  
  <p>Any idea what is going on? Do I need to go back to a previous firmware version to get things to work as they did originally?</p>
  
  <p>Any advice is appreciated, thank you.</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2018-11-27T01:40:04.890Z
Comments.Text: Is there any chance it's simply your code that isn't working? Could you add a screenshot of the program you're using to test the functions?
Comments.UserDisplayName: MindS1
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2018-11-28T22:34:53.977Z
Comments.Text: Using the "View" directly from the NXT brick to test the sensors, just get all ?????on the display with the color or ultrasonic sensor plugged in.
Comments.UserDisplayName: Paul
Tags: <nxt><sensor>
Title: NXT Sensors not working
UserDisplayName: Paul
ThreadText: # NXT Sensors not working
  
  (Asked by: username_0 on 2018-11-26)
  
  I'm looking for advice. I pulled my Mindstorms 8547 kit out of storage and started to play with it after several years of inactivity.
  
  I found that the Color Sensor, the Ultra Sonic Sensor, and the position read back on motors all do not function. I downloaded the latest software and firmware version 1.31.
  
  Any idea what is going on? Do I need to go back to a previous firmware version to get things to work as they did originally?
  
  Any advice is appreciated, thank you.
  
  **Tags:** nxt, sensor
  
  > **Comments:**
  > **username_1**: Is there any chance it's simply your code that isn't working? Could you add a screenshot of the program you're using to test the functions?  
  > **username_0**: Using the "View" directly from the NXT brick to test the sensors, just get all ?????on the display with the color or ultrasonic sensor plugged in.  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_2 on 2018-12-05. Score: 2
  
  Check for 5V on the two middle pins of the motor connectors (plug a cable into the brick, no motor on the other end, and measure volatege on the contacts of the open other end). NXT/EV3 have separate power to all the sensors, if there's a short (failed capacitor or similar) or the power chip failed then the brick will still work, but the sensors won't get power.
  
  
  ---
  
  ### Answer by username_1 on 2019-06-07. Score: 1
  
  This honestly just sounds like a faulty cable. See the NXT cable pinout below. If wire 5 or 6 is damaged it will cause digital I2C sensors to fail. This includes the color and ultrasonic sensors, but not the (analog) touch sensors.
  
  Also, according to [this source](http://www.brickengineer.com/pages/2008/09/05/lego-nxt-motor-wiring/), pin 5 and 6 are also used for the motor encoders. So damage to 5 or 6 will cause rotation feedback to fail.
  
  This sounds exactly like the issues you are having. The solution? Try a different cable to confirm that the issue is a faulty wire, then (optionally) buy new cables from [here](http://www.mindsensors.com/51-cables-connectors).
  
  [![NXT Wire Pinout](https://i.sstatic.net/e0z4V.png)](https://i.sstatic.net/e0z4V.png)
  
  
  ---
  
  