This robot from Tsinghua University walks like a human. It looks like it is about the size of the Darwin OP. Its frame design is not too different from Poppy so maybe the team can study the method and make Poppy walk?
Video of the robot stepper 3d walking:
I think I found the academic paper describing the robots construciton but I am not qualified to analyze it. I posted here hoping someone more qualified would study it. I think if you are from INRIA you can download the whole article. abstract
btw they have an older version of this robot was walking already in 2008. Video of stepper senior:
thanks for the link. The speed is really fast and the walk very dynamic.
I notice they have a 2 DOF ankle and large feet.
I also notice the feet are always horizontal, they do not use ankle to walk.
They also use only one joint for the ankle but not in the same direction as the one in Poppy Humanoid. They rather have bigger foot to ensure the sagittal balance. Also they have big power for the knee joint, 2 motors on the little robot and 4(!) on the taller.
I noticed that too @Thot. Except for that, I was excited when I first saw the video because somehow the way it walks reminded me of Dr. Guero’s Kondo robot so maybe they were doing something similar.