Wall-E Robot w/ electronics /rmx

remixed from the great work from https://www.thingiverse.com/thing:1681442
see it move https://youtu.be/rTlbqrB86YA

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big wheel: one side glued to the axle, other side tightened with screw (drilled a 1.8mm hole and use a 2mm screw); gear on the outer wheel is just used as spacer and also makes it look symmetrical; used 2x 2mm screws to tighten the drive gear to the wheel
axle: printed with support and brim - easily removed afterwards
motor support: use M4 30mm for assembly, use one M3 30mm for securing the motor - for now, please drill the missing holes in the model for connecting the motor support to brackets and mounts
new pin: redesigned the pin to be slimmer to allow tracks to move easily and now I have a moving Wall-E - now I used 35 threads per side, instead of 36
**nb: the motor support may change as I've noticed the drive gear may be too close to the ground and might get stuck in the tracks as they roll below it.

I use a radio-controller remote built with Arduin