Spike Humanoid - Swinging Arms

 EV3 had a Humanoid Robot example.  Robotix4Me uses it as an interesting robotics and programming introduction. Moving a leg or arm, walking.

Can something similar be done with Spike Prime? Google search found several varieties.  

Some use "walking feet" and some use wheels. One video nicely compares the two, but they charge $30 for the lesson write-up (timing, questions, etc) and build instructions!!! OK earn a little for your time BUT... so high, it appears more like not wanting to share.  Thankfully the Lego community shares freely and building components of the lesson are found elsewhere. 

What intrigued me the most were the swinging arms. So I made the top half first. The torso is a good learning experience for using gears.

A large motor makes up the torso.  On the back side and axis with a gear connected to a bevel gear connected to axis on each side. The connection needs to set so the arms swing out and in at opposite times.

The gears have to be set so arms swing and don't move together. 

FOTO coming

Legs are in progress 



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