Toddlerbot Release V2.0 - 2XC

Hi Everyone!

[Update 11/21/2025]

• Updated print orientation of some parts to increase success rate and strength. 
• Arm is now much stronger with added axk0414 thrust bearing. (Highly recommend this version if yours break and need to reprint)
• Various improvements across the design

[Update 08/25/2025]

ToddlerBot v2.0 is finally here! This is the post for 2XC variant of v2.0, it has the same set of motors as the original v1.0, so this is basically a free upgrade with more capabilities! However, if you could afford to buy a few new motors, we highly recommend the v2.0 2XM variant, it has a stronger hip and thus more capability than the 2XC version, which is recommended for all new builds too!

ToddlerBot is a low-cost, open-source humanoid robot platform designed for scalable policy learning and research in robotics and AI. Here are some links if you want to know more about ToddlerBot: 

[Website] https://toddlerbot.github.io

[Video] https://youtu.be/A43QxHSgLyM 

[Paper] https://arxiv.org/abs/2502.00893

[Docs, BOM] https://hshi74.github.io/toddlerbot

[Onshape] https://cad.onshape.com/documents/565bc33af293a651f66e88d2/w/f294f15f37e425275ea6da3c/e/5aa2ba9c7004939a8f0e4ca2

[Tweet] https://x.com/kenwangweizhuo/status/1960135627175026729

This is a fully open-sourced humanoid developed for research and education purposes! It has 30 DoFs, and a jetson Orin NX 16G onboard, with two fisheyes for potential stereo and slam. BOM cost of the humanoid is only $6000.

[Update 07/23/2025]

The knee rod linkage in the old print profile was incorrect, it's now corrected! Anyone else that is stuck here - please reprint 4x of the rod and it should now fit nicely.

If there is anything not correct in the print profile, please refer to the OnShape release, and please let us know!