Body: <p>Some time ago I found the <a href="https://www.youtube.com/watch?v=HU9SaCFnCng" rel="nofollow noreferrer">following youtube video</a> by Ricardo Oliveira of a small NXT plotter that crawls over a whiteboard. It has two strings that can be shortened through coils and with this, it controls its position on the whiteboard.</p>
  
  <p>Here is a screenshot from the video.</p>
  
  <p><a href="https://i.sstatic.net/AQfse.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/AQfse.png" alt="enter image description here"></a></p>
  
  <p>The whole idea behind it is as simple as it is intriguing. I really like it. There is a somewhat more detailed video (thanks to Mr. Shiny for sharing the link) <a href="https://www.youtube.com/watch?v=5x0n29MjIi8" rel="nofollow noreferrer">here on youtube</a>.</p>
  
  <p>Nevertheless, could someone who has already recreated it and could they share detailed images (or even better a construction plan)?</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-01-09T16:51:37.473Z
Comments.Text: I haven't seen any instructions, but here are a BrickPi version and an EV3 version that may give you some inspiration: https://www.youtube.com/watch?v=YYG3XGfyVHk, https://www.facebook.com/groups/legomindstorms/permalink/554637794684451/
Comments.UserDisplayName: David Lechner
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-01-10T04:12:18.077Z
Comments.Text: There is a video which explains a little of what went into building the robot: https://www.youtube.com/watch?v=5x0n29MjIi8
Comments.UserDisplayName: Mr. Shiny and New 安宇
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-01-11T01:10:45.980Z
Comments.Text: @Mr.ShinyandNew安宇 I have already seen this video and it indeed gives more insight. I still was hoping for someone who rebuilt the model and has really detailed photos. I had some further ideas for the programming and if there was a quick way to get a working and tested model, I would appreciate it.
Comments.UserDisplayName: halirutan
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-01-11T01:12:43.453Z
Comments.Text: I thought you might have seen it, that's why I posted it as a comment rather than an answer.
Comments.UserDisplayName: Mr. Shiny and New 安宇
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-01-11T01:16:17.350Z
Comments.Text: @Mr.ShinyandNew安宇 I included your link in the description of my question.
Comments.UserDisplayName: halirutan
Tags: <nxt>
Title: Building instructions: Robot Spider Pen by Ricardo Oliveira
UserDisplayName: halirutan
ThreadText: # Building instructions: Robot Spider Pen by Ricardo Oliveira
  
  (Asked by: username_0 on 2016-01-09)
  
  Some time ago I found the [following youtube video](https://www.youtube.com/watch?v=HU9SaCFnCng) by Ricardo Oliveira of a small NXT plotter that crawls over a whiteboard. It has two strings that can be shortened through coils and with this, it controls its position on the whiteboard.
  
  Here is a screenshot from the video.
  
  [![enter image description here](https://i.sstatic.net/AQfse.png)](https://i.sstatic.net/AQfse.png)
  
  The whole idea behind it is as simple as it is intriguing. I really like it. There is a somewhat more detailed video (thanks to Mr. Shiny for sharing the link) [here on youtube](https://www.youtube.com/watch?v=5x0n29MjIi8).
  
  Nevertheless, could someone who has already recreated it and could they share detailed images (or even better a construction plan)?
  
  **Tags:** nxt
  > **Comments:**
  > **username_1**: I haven't seen any instructions, but here are a BrickPi version and an EV3 version that may give you some inspiration: https://www.youtube.com/watch?v=YYG3XGfyVHk, https://www.facebook.com/groups/legomindstorms/permalink/554637794684451/  
  > **username_2**: There is a video which explains a little of what went into building the robot: https://www.youtube.com/watch?v=5x0n29MjIi8  
  > **username_0**: @Mr.ShinyandNew安宇 I have already seen this video and it indeed gives more insight. I still was hoping for someone who rebuilt the model and has really detailed photos. I had some further ideas for the programming and if there was a quick way to get a working and tested model, I would appreciate it.  
  > **username_2**: I thought you might have seen it, that's why I posted it as a comment rather than an answer.  
  > **username_0**: @Mr.ShinyandNew安宇 I included your link in the description of my question.  
  
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  ## 0 answers
  
  