Stanford (Haochen Shi et al.) ToddlerBot 2.0 (1)

Stanford (Haochen Shi et al.) ToddlerBot 2.0 (2)

Stanford (Haochen Shi et al.) ToddlerBot 2.0 (3)

~$6,000 DIY · $4,299 builtWowRobo assembled price excludes Jetson, Wi-Fi and batteries (sold out); ROBOTIS Dynamixel bundle $4,336 (sold out)

Out of stockRL walking30 DOFJetson Orin NXMuJoCo MJXLoco-manipulation

Weeks+Shipping: 4–8 wks (est.). The WowRobo assembled unit (30-day pre-order) and the ROBOTIS bundle were both sold out. DIY means Dynamixels from ROBOTIS US plus a Jetson, then 1–2 weeks of printing and assembly. WowRobo ↗

Project ↗GitHub ↗Paper ↗WowRobo ↗

Overview

The most capable small research platform, and MuJoCo end to end, so MuJoCo sim experience transfers directly. The price is the problem ($4.3–6k, mostly Dynamixels), and both ready-made options were sold out. Get it for manipulation and whole-body skills, not just balance.

Specifications

Category	Bipeds · Open-source RL bipeds
Released	2025
Availability	Out of stock
Programmability	Open source (hardware + software)
Best for	Professionals & labs
Vision sensors	Camera, Depth camera
Actuators	Smart servos (Dynamixel, Feetech…)
Audio	Speaker, Microphone
Compute type	NVIDIA Jetson
Balance type	RL walking
Height	56 cm
Weight	3.4–3.7 kg
Compute	NVIDIA Jetson Orin NX 16 GB
Speed	0.25 m/s walk, 1 rad/s turn
DOF	30 Dynamixel (7/arm, 6/leg, 2 neck, 2 waist)
Sensors	2 fisheye cameras (stereo), BNO085 IMU, 2 mics, speaker
Balance	RL walking/turning policies trained in MuJoCo MJX, zero-shot transfer; very robust per the project, survives ~7 falls before a part breaks.
SDK	toddlerbot Python package: MJX training, keyframe GUI, VR teleop, diffusion-policy manipulation