Box3D Walker Rig
Erin Catto's Box3D compiled to WebAssembly, running Theo Jansen linkages in your browser. Drag to orbit, scroll to zoom.
Mechanism
Jansen walker
Rover wheels
Custom
12 legs, 74 bodies, 109 hinges, 5 closed loops per leg.
Custom build
Builds that finish the challenge course on their own (manual drive off)
Body
Body finish
Blob starting shapes
Balls (x forward is minus, y up, z left)
Two building blocks, joined into one body. Piece B always has to touch piece A.
Join piece B onto piece A's
One fired clay brick, standard 215 × 102.5 × 65 proportions
1.00 m
Lie it
Holes, all one size: 10 through the top, 5 on each long side, 2 on each end. Pick a face and a hole, then plug a shape into it.
Motors sit in holes. Left motors take a hole on the left-facing side, right motors one on the right.
Rod attach points: pick, then click the body in the 3D view
Jelly look
Applies to every jelly surface on your car, as you drag.
Core colour
Wheels, front row is the driving direction
0.30 m
0.05 m
Each axle rod is solid steel and part of the body, so it can catch on the step and rubble. A longer rod pushes that wheel further out; uneven rods give an uneven track.
Motor position
Bot opponents
Bots drive at full crank speed, keep their lane, keep a gap from every other car and back up when stuck.
My garage
Saves everything about your car: body, materials, parts, flags, wheels, caps, rods, motor and suspension. Saved cars show up in each bot's design list, so you can race against your own builds, and Load puts one back on your car.
Overheat
Running motors makes heat, and more motors at once make it much faster. One corner key alone (7, 9, 1, 3) is the cheapest way to move, a pair (8, 2, 4, 6) costs more, and 5, all four, costs the most. At 100% everything cuts out until the car has cooled to the restart level. Counts only while you drive by hand.