For the legs you could always use Ponoko, haven't used them myself but they seem promising. <a href="http://www.ponoko.com/">http://www.ponoko.com/</a><br><br><div class="gmail_quote">On Mon, Aug 3, 2009 at 9:32 AM, Richard Jones <span dir="ltr"><<a href="mailto:rjtp@ihug.co.nz">rjtp@ihug.co.nz</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Maybe Sashin has proposed what could be our first group project?<br>
I would be quite interested in having some kind of n-a-pod of my own to<br>
play (oops learn) with.<br>
I can knock out prototype PCBs at cost, although <a href="http://www.arduino.cc/" target="_blank">http://www.arduino.cc/</a><br>
would do nicely.<br>
I wonder if we have someone who could cnc the legs and bodies for a modest<br>
price?<br>
Morris has already recommended a low cost servo supplier.<br>
What else do we need?<br>
<br>
Richard<br>
<br>
On Mon, 3 Aug 2009 06:25:39 +1200, Charles Manning<br>
<<a href="mailto:manningc2@actrix.gen.nz">manningc2@actrix.gen.nz</a>><br>
wrote:<br>
> On Saturday 01 August 2009 14:56:24 sachin surendran wrote:<br>
>> Hi,<br>
>> I am building a 6 legged walking Crab with 3 servos on each leg.<br>
>> I am looking for hobbyist who would like join along in the process of<br>
>> building it.<br>
>><br>
>> My rough plans are :<br>
>> - To perfect the walking algorithm for 6 legged crab with 3 degrees of<br>
>> freedom<br>
>> - Experiment on self learning ( The bot learns itself to perfect its<br>
>> walking motion to take it from one place to another )<br>
>> - Mount a camera for purposes of image recognition.<br>
>><br>
>> Its been more fun working as a team than alone on this ,<br>
>> So any robotics enthusiast from christchurch who like to join along, go<br>
>> ahead<br>
>> and drop me a mail.<br>
><br>
> Hi Sashin<br>
><br>
> I think it would be a good idea to spend some time at the next meeting<br>
> doing<br>
> some brain storming on where this could go.<br>
><br>
> May I be so forward as to suggest that this project can easily be broken<br>
> into<br>
> distinct projects that can be pitched at different interest areas:<br>
> * Building/programming the platform (ie. the mechanics, sensors, etc).<br>
> * Analytically figuring out walking algorithms.<br>
> * Self learning algorithms.<br>
> * Video processing etc.<br>
><br>
> I am particularly interested in the self learning bit. How deep do you<br>
want<br>
> to<br>
> go with this? ie. Do you want to start with raw servo commands and get<br>
the<br>
> robot to learn how to wiggle its legs and coordinate them to actually<br>
learn<br>
><br>
> to walk or do you want to do higher level functions such as maze<br>
following?<br>
><br>
> Or both?<br>
><br>
> What ideas have you considered so far? I guess at the most extreme you<br>
> could<br>
> consider a genetic algorithm approach to learn to walk which would be<br>
> pretty<br>
> interesting. There are some examples of things like this on the www, such<br>
> as:<br>
> www:<a href="http://eprints.ecs.soton.ac.uk/2955/" target="_blank">http://eprints.ecs.soton.ac.uk/2955/</a><br>
><br>
> There have also been some interesting mechanical/algorithm co-designs<br>
where<br>
><br>
> genetic algorithms have designed both the legs and the gait.<br>
><br>
><br>
> -- CHarles<br>
><br>
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</blockquote></div><br>