Screwless Walking Mechanism

It's wacky, it's wide, it's walking, and most importantly it's screwless!

This is version 2 of the rollingstep walker (https://www.thingiverse.com/thing:3694540), now with commonly available dc gear motor to minimize number of parts. Everything is snap on, reducing assembly time. The lower frame is designed to hold a battery holder for 2x 18650 lithium batteries.

Video: https://youtu.be/YYMLW-2Xq48

Parts to print:
foot x8
spacer x4
crank1, crank2, crank3 x4, solid infill
mcrank, triangle, motorclamp x2
innerframe, outerframe x2
topframe, bottomframe x1

Optional:
arduinoholder x2 (I did not print it because no plan for using arduino for now)

Known issues:
The stub axles (2 cylindrical protrusions in innerframe and outerframe) are prone to breaking when walking in a curve or turning around. I glued them back with epoxy. This could be because I'm not careful to examine how those axles are supported with so sparse infill (15%) while slicing. Make sure they get strong