Answers.Body: <p>If you'd rather not cut off the ends off two batteries and jury-rig in rods of hot melting glue to act as spacers, and instead have access to a 3D printer, take a look at <a href="http://www.thingiverse.com/thing:122810" rel="nofollow noreferrer">http://www.thingiverse.com/thing:122810</a> :-)</p>
  
  <hr>
  
  <p>As the contents of the linked page have been removed, here are the original files:</p>
  
  <p><a href="https://i.sstatic.net/9TQm8.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/9TQm8.jpg" alt="enter image description here"></a></p>
  
  <p><a href="https://i.sstatic.net/82Ea1.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/82Ea1.jpg" alt="enter image description here"></a></p>
  
  <p><a href="https://i.sstatic.net/Jo0VN.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/Jo0VN.jpg" alt="enter image description here"></a></p>
  
  <p><a href="https://i.sstatic.net/F67Jh.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/F67Jh.jpg" alt="enter image description here"></a></p>
  
  <p><a href="https://i.sstatic.net/dMuue.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/dMuue.jpg" alt="enter image description here"></a></p>
  
  <p><a href="https://i.sstatic.net/gctvs.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/gctvs.jpg" alt="enter image description here"></a></p>
  
  <p><a href="https://i.sstatic.net/jDyeS.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/jDyeS.jpg" alt="enter image description here"></a></p>
  
  <p><a href="https://i.sstatic.net/hoCfC.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/hoCfC.jpg" alt="enter image description here"></a></p>
  
  <p><a href="https://i.sstatic.net/vrTvX.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/vrTvX.jpg" alt="enter image description here"></a></p>
  
  <p><a href="https://i.sstatic.net/63ylI.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/63ylI.jpg" alt="enter image description here"></a></p>
  
  <p>And of course <a href="https://web.archive.org/web/20150929120812if_/https://thingiverse-production-new.s3.amazonaws.com/zipfiles/6c/91/ab/f9/7c/LEGO_Mindstorms_RCX_NXT_EV3_fake_battery.zip" rel="nofollow noreferrer">the STL file</a> from <a href="https://web.archive.org/web/20170207195733/http://www.thingiverse.com/thing:122810" rel="nofollow noreferrer">the archived version of the site</a>.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2014-11-03T00:08:10.793Z
Answers.LastActivityDate: 2019-12-27T09:16:44.140Z
Answers.LastEditDate: 2019-12-27T09:16:44.140Z
Answers.UserDisplayName: kguest
Answers.Body: <p>The older RCX 1.0 had a power plug inbuilt. However Philo has shown how to create one yourself in a fairly simple way:
  <a href="http://www.philohome.com/motors/motorcomp.htm" rel="nofollow noreferrer">LEGO® 9V Technic Motors compared characteristics</a>, scroll down to the section "Getting maximum mechanical power from RCX output" towards the bottom of the page.</p>
  
  <p>The idea is to create two fake batteries and draw a wire from each, creating a +9V and a ground from a separate source. You would need a voltage regulator though. <strong>WARNING</strong>: supplying incorrect voltage can destroy your RCX.
  <img src="https://i.sstatic.net/8GMbV.jpg" alt="Using fake batteries to power the RCX"></p>
  
  <p>Image and technique by Philippe "Philo" Hurbain © 2000-2009, used in accordance to "You are free to use it for any purpose, just give me credit...".</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2011-12-04T16:16:09.563Z
Answers.LastActivityDate: 2011-12-04T16:16:09.563Z
Answers.UserDisplayName: Sebastian Wahl
Body: <p>I want to build an auto-feeder with the RCX 2.0 for my cat. The problem is, that I often had to exchange the batteries. Is there an adapter for the RCX to connect it to a power point?</p>
  
Tags: <mindstorms><rcx>
Title: How can I connect the RCX 2.0 to an external power source?
UserDisplayName: Sibbo
ThreadText: # How can I connect the RCX 2.0 to an external power source?
  
  (Asked by: username_0 on 2011-12-04)
  
  I want to build an auto-feeder with the RCX 2.0 for my cat. The problem is, that I often had to exchange the batteries. Is there an adapter for the RCX to connect it to a power point?
  
  **Tags:** mindstorms, rcx
  
  ---
  
  ## 2 answers
  
  ### Answer by username_2 on 2011-12-04. Score: 10 | Accepted answer
  
  The older RCX 1.0 had a power plug inbuilt. However Philo has shown how to create one yourself in a fairly simple way:
  [LEGO® 9V Technic Motors compared characteristics](http://www.philohome.com/motors/motorcomp.htm), scroll down to the section "Getting maximum mechanical power from RCX output" towards the bottom of the page.
  
  The idea is to create two fake batteries and draw a wire from each, creating a +9V and a ground from a separate source. You would need a voltage regulator though. **WARNING**: supplying incorrect voltage can destroy your RCX.
  ![Using fake batteries to power the RCX](https://i.sstatic.net/8GMbV.jpg)
  
  Image and technique by Philippe "Philo" Hurbain © 2000-2009, used in accordance to "You are free to use it for any purpose, just give me credit...".
  
  
  ---
  
  ### Answer by username_1 on 2014-11-03. Score: 2
  
  If you'd rather not cut off the ends off two batteries and jury-rig in rods of hot melting glue to act as spacers, and instead have access to a 3D printer, take a look at <http://www.thingiverse.com/thing:122810> :-)
  
  ---
  
  As the contents of the linked page have been removed, here are the original files:
  
  [![enter image description here](https://i.sstatic.net/9TQm8.jpg)](https://i.sstatic.net/9TQm8.jpg)
  
  [![enter image description here](https://i.sstatic.net/82Ea1.jpg)](https://i.sstatic.net/82Ea1.jpg)
  
  [![enter image description here](https://i.sstatic.net/Jo0VN.jpg)](https://i.sstatic.net/Jo0VN.jpg)
  
  [![enter image description here](https://i.sstatic.net/F67Jh.jpg)](https://i.sstatic.net/F67Jh.jpg)
  
  [![enter image description here](https://i.sstatic.net/dMuue.jpg)](https://i.sstatic.net/dMuue.jpg)
  
  [![enter image description here](https://i.sstatic.net/gctvs.jpg)](https://i.sstatic.net/gctvs.jpg)
  
  [![enter image description here](https://i.sstatic.net/jDyeS.jpg)](https://i.sstatic.net/jDyeS.jpg)
  
  [![enter image description here](https://i.sstatic.net/hoCfC.jpg)](https://i.sstatic.net/hoCfC.jpg)
  
  [![enter image description here](https://i.sstatic.net/vrTvX.jpg)](https://i.sstatic.net/vrTvX.jpg)
  
  [![enter image description here](https://i.sstatic.net/63ylI.jpg)](https://i.sstatic.net/63ylI.jpg)
  
  And of course [the STL file](https://web.archive.org/web/20150929120812if_/https://thingiverse-production-new.s3.amazonaws.com/zipfiles/6c/91/ab/f9/7c/LEGO_Mindstorms_RCX_NXT_EV3_fake_battery.zip) from [the archived version of the site](https://web.archive.org/web/20170207195733/http://www.thingiverse.com/thing:122810).
  
  
  ---
  
  