Next month I'll be traveling to S. Korea again to compete in the International Robot Competition 2010 at the Robot World Convention in Seoul. One of the things that was asked of my team was that I compete in both the lightweight ( < 2kg) and the heavyweight (> 2kg) competitions. Giger Fu is the obvious answer for the heavyweight, but I didn't want to show up with just a Bioloid Premium for my lightweight entry so I set out to design and build a new lightweight humanoid using the RX-28 and an ArbotiX platform.
My initial design was very similar to what I plan on doing for Giger's next revision, using 4 pitch servos per leg. The problem was that I could not for the life of me get it under 2kg. It ended up landing around 2.2kg regardless of what I did. Here's the first design for reference:
I needed to get it to about 1.9kg before I pulled the trigger on making this, giving me a bit of wiggle room for additional hardware, etc. My 2nd revision was a bit more barebones, removing 2 of the pitch servos per leg:
And here are a few renders of the bot itself:
Should have the parts finished by next week! I'll be sure to post build photos and whatnot.