Actually I am working on an small robot, who is able to climb about obstacles.
This is the current version.
Skat3r – the robot with a Rocker-Bogie mechanism
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Andreas Baumgart 
Hi,
Saw your Skat3r – the robot with a Rocker-Bogie mechanism video. Nice work! This could be an excellent introduction to understanding the rocker-bogie mechanism for young students participating in FLL robotics competitions. I wonder, are there building instructions for this project that you wish to share?
Best,
Tomer