The Swirling Brain is currently certified at Master level.

Name: Jim Brown
Member since: 2001-03-01 04:33:02
Last Login: 2010-02-24 15:49:03

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Homepage: http://www.swirlingbrain.net

Notes: Hi. I'm The Swirling Brain. I tinker with robots, work on rolling ball sculptures, and I love to program. I come here to robotics.net since an old DPRG friend of mine runs his site. I've always enjoyed his company.

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11 Feb 2010 »

It's snowing here in Texas! I'm stuck here at work and I wish I could go outside and make a snow dalek!

8 Dec 2009 »

I made some more rolling ball sculptures and things on shapeways. Click here to check them out.

18 Oct 2009 »

I got an android mytouch phone. (Mine is black not white). Of course this is the first day I've had it, but so far I love it! This all started because I lost my other phone and so my employer told me to get another phone. Nice thing is they reimburse it so it's free to me. It came with a 4gb sd card too! It looks like Android phones are programmed with Java. I know java and I'm happy about that but of course they'll have their own weirdness so i'll have to figure that out. I really like the idea of being able to write apps for my phone! I'm not sure what I want to make but it just seems cool that I can. I've spent most of the day downloading free apps. Wow, I'm impressed what's free for this phone. So I guess for the next few days or weeks I have a big time waster figuring out the phone. Wee!

10 Oct 2009 »

I've been playing even more with Shapeways.com. I made a Christmas Ornament Rolling Ball Sculpture. I want to 3D print so much more but I just don't have the money to do so. I found an open source 3D printer that looks a little promising and I want one of these: Maker Bot. Watch the video of it in action on their website. I can't really afford one but I think it would be cool if some robot groups like DPRG bought one for their group and then let me greedily use it now and then. :-)

Watch the video: http://www.youtube.com/watch?v=ikVwr1E6hoo

15 Sep 2009 (updated 15 Sep 2009 at 02:09 UTC) »

Lately I've been trying to make robot parts and have them 3D printed in plastic at Shapeways.com. I have made a few rolling ball sculptures with them.

Video: http://www.youtube.com/watch?v=KGdUFg_X8mE

Video: http://www.youtube.com/watch?v=IfqH_60ZgFY

Video: http://www.youtube.com/watch?v=TfXCBFxDx6w

I want to make some robot parts. I tried making part of a robot servo leg using a pixel method with a program I wrote.

However, because of the pixels (voxels?) there's too many polygons for shapeways to accept. There's only 4300 faces but I think they turn them into multiple triangles and then it gets nasty like a million of them. As you can see from the image, my program has some strange problem or Turbocad 14 has a weird problem where it removes a small face on the left hand side. I'm not sure if it's real or just a bug with Turbocad 14. I tried downloading MeshLab and Blender but they both have their troubles. MeshLab crashes all the time. When I could get it to work. I could get it to close holes and reduce or decimate the number of polygons but Shapeways would never accept MeshLab's output. Similarly, Blender could reduce polygons but there again I had trouble loading the file into Shapeways. I'm sure it's something I'm doing. Shapeways has to have a totally watertight model for it to be accepted and when I reduce polygons somewhere something gets messed up. I also made a few Christian rings and a few other RBSs but I haven't tried to print anything else except for the three RBSs shown so far.

(Testing putting a line on a curved faced ring)

(Testing putting text on a model & curved face)

(This rbs has a start bucket and an end bucket)

122 older entries...

 

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