Blueprints
Only things you can actually build. Whether a project publishes editable sources (STEP, PCB files) or read-only exports (STL, PDF); what the BOM costs delivered; how many hours of printing and machining it takes; where the hard step is; and which parts we checked ourselves.
Blueprints · B
A USD 2,500 biped: what LeRobot Humanoid hands you, and what it does not
The first bipedal humanoid at this price that you can start training on without redesigning the structure. The value i…
LeRobot Humanoid · Robstride joint motors · CAN and CAN FD buses · 2026-09-28
Blueprints · B
A USD 110 arm: why SO-101 is the one to build first
At the low end this is the most literal use of "open source": you can buy the parts, change the structure and replace …
SO-101 arm · Feetech STS series servos · LeRobot · 2026-09-28
Blueprints · B
Thor: an industrial joint layout for EUR 350, paid for in printing hours
A 6-axis arm built from stepper motors driving printed gears and GT2 belts, with a joint arrangement copied from indus…
Thor 6-axis arm · 2026-09-28