Answers.Body: <p>NXT Color Sensors are supported directly by EV3-G, the EV3 software running on the PC or MAC.
  NXT <strong>Light</strong> Sensors are not.</p>
  
  <p>To use <strong>Light</strong> sensors requires a bit of trickery.  EV3-G has a Raw Sensor block that provides access to the Light sensor values.  The raw sensor returns values from 0-1023, which is very different than the 0-100 of the NXT-G Light Sensor block.</p>
  
  <p>Setting up the <strong>Light</strong> sensor to use ambient or reflected light is also solved with a bit of trickery.  Use the Sound Sensor Block and toggle the dB setting.</p>
  
  <p>Once that much is tested and working, create a set of MyBlocks to mimic existing Color Sensor blocks.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-08-21T18:34:20.123Z
Answers.LastActivityDate: 2014-08-21T18:34:20.123Z
Answers.UserDisplayName: dfrevert
Answers.Body: <p>Raw sensor value works, but shows a level of dark, not of light :), meaning that higher values indicate lower light.</p>
  
  <p>Ambient light works directly, but for reflected light you need to insert a EV3 Color Sensor block with Reflected Light mode to turn on the light in the NXT Sensor. After that, use raw values or the Sound sensor block.</p>
  
  <p>The Sound sensor block is not included in the download version of the EV3 software (at least not in mine), you can download the necessary ev3b file from <a href="http://www.lego.com/en-us/mindstorms/downloads" rel="nofollow">http://www.lego.com/en-us/mindstorms/downloads</a> and then import it into your project.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-11-23T13:28:58.153Z
Answers.LastActivityDate: 2014-11-23T13:28:58.153Z
Answers.UserDisplayName: Rolf
Answers.Body: <p>The kids on the FLL team I coach created a video that explains how to use the NXT light sensors on an EV3. Hope it helps. <a href="http://youtu.be/I7Bqvk-uMLk?list=UU2r9xq9o39SbEX1cESNdIHA" rel="nofollow">http://youtu.be/I7Bqvk-uMLk?list=UU2r9xq9o39SbEX1cESNdIHA</a></p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-08-22T12:41:11.323Z
Answers.LastActivityDate: 2014-08-22T12:41:11.323Z
Answers.UserDisplayName: Lego Works
Body: <p>I would like to use the NXT light sensors with my EV3 brick. I don't have enough light sensors as I need 2 for each robot (per set) and it only comes with one. However, I have a lot of NXT sensors. Will the EV3 be able to use the NXT light snesor and is the NXT light sensor as accurate as the EV3 light sensor?</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-08-21T18:37:02.630Z
Comments.Text: possible duplicate of [Will Mindstorms EV3 be backwards compatible?](http://bricks.stackexchange.com/questions/1838/will-mindstorms-ev3-be-backwards-compatible)
Comments.UserDisplayName: HaydenStudios
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-08-22T19:25:41.860Z
Comments.Text: The question asks "is it as accurate as the EV3 light sensor?" The EV3 has a Color sensor.  There are important differences, like the ability to turn on/off the 3 color lights.  I'm not editing because the main question is about the Light sensor.
Comments.UserDisplayName: dfrevert
Tags: <mindstorms><nxt><ev3>
Title: Are NXT Light sensors compatible with EV3?
UserDisplayName: J_W
ThreadText: # Are NXT Light sensors compatible with EV3?
  
  (Asked by: username_0 on 2014-08-21)
  
  I would like to use the NXT light sensors with my EV3 brick. I don't have enough light sensors as I need 2 for each robot (per set) and it only comes with one. However, I have a lot of NXT sensors. Will the EV3 be able to use the NXT light snesor and is the NXT light sensor as accurate as the EV3 light sensor?
  
  **Tags:** mindstorms, nxt, ev3
  > **Comments:**
  > **username_1**: possible duplicate of [Will Mindstorms EV3 be backwards compatible?](http://bricks.stackexchange.com/questions/1838/will-mindstorms-ev3-be-backwards-compatible)  
  > **username_2**: The question asks "is it as accurate as the EV3 light sensor?" The EV3 has a Color sensor.  There are important differences, like the ability to turn on/off the 3 color lights.  I'm not editing because the main question is about the Light sensor.  
  
  ---
  
  ## 3 answers
  
  ### Answer by username_2 on 2014-08-21. Score: 5
  
  NXT Color Sensors are supported directly by EV3-G, the EV3 software running on the PC or MAC.
  NXT **Light** Sensors are not.
  
  To use **Light** sensors requires a bit of trickery. EV3-G has a Raw Sensor block that provides access to the Light sensor values. The raw sensor returns values from 0-1023, which is very different than the 0-100 of the NXT-G Light Sensor block.
  
  Setting up the **Light** sensor to use ambient or reflected light is also solved with a bit of trickery. Use the Sound Sensor Block and toggle the dB setting.
  
  Once that much is tested and working, create a set of MyBlocks to mimic existing Color Sensor blocks.
  
  
  ---
  
  ### Answer by username_3 on 2014-11-23. Score: 2
  
  Raw sensor value works, but shows a level of dark, not of light :), meaning that higher values indicate lower light.
  
  Ambient light works directly, but for reflected light you need to insert a EV3 Color Sensor block with Reflected Light mode to turn on the light in the NXT Sensor. After that, use raw values or the Sound sensor block.
  
  The Sound sensor block is not included in the download version of the EV3 software (at least not in mine), you can download the necessary ev3b file from <http://www.lego.com/en-us/mindstorms/downloads> and then import it into your project.
  
  
  ---
  
  ### Answer by username_4 on 2014-08-22. Score: 1
  
  The kids on the FLL team I coach created a video that explains how to use the NXT light sensors on an EV3. Hope it helps. <http://youtu.be/I7Bqvk-uMLk?list=UU2r9xq9o39SbEX1cESNdIHA>
  
  
  ---
  
  