Build Sessions

The guided journey from cold-start to a finished Dropbear. Each session is one sit-down chunk of work — usually 1–3 hours, ending in a verifiable artifact.

Session 1
free

Torso Assembly

A futuristic, rigid robot torso — square, light, holds its shape under hand-twist. The first part of your Dropbear that exists in the real world.

~120 min
Session 2
subscription

Pelvis & Hip Assembly

The pelvis subassembly — the load-bearing bridge between torso and legs, with hip pitch/yaw/roll mounts ready for actuators.

~90 min
Session 3
subscription

Left Leg Assembly

The left leg from hip to ankle — femur, tibia, knee revolute, ankle pitch/roll. Articulates freely once actuators are mounted.

~180 min
Session 4
mirrorsubscription

Right Leg Assembly

The right leg — mirror of the left. Same instructions, mirrored parts. About 30% faster the second time.

~150 min
Session 5
subscription

Left Foot

The left foot — a smart sensing platform with four 50kg load cells embedded in TPU pads. Dropbear feels the ground through this.

~120 min
Session 6
mirrorsubscription

Right Foot

The right foot — mirror of the left. Same sensing platform, same process.

~100 min
Session 7
subscription

Left Arm & Hand

The left upper limb — shoulder yaw/pitch/roll, elbow, wrist, and the Aero Hand with five tendon-driven fingers at 7 DoF, 16 joints, 389 g.

~300 min
Session 8
mirrorsubscription

Right Arm & Hand

The right upper limb — mirror of the left. Same instructions, mirrored parts.

~240 min
Session 9
subscription

Head — the Egg

The Dropbear head: Stewart platform with 6-DOF motion, camera, Jetson Orin running local LLM. The face that talks back.

~480 min
Session 10
subscription

Full Robot Integration

All nine subassemblies joined into a standing Dropbear. First full-body power-on: every joint alive, sensors live, the robot as a system for the first time.

~480 min