CBR-II
The second generation of an open-source, low-cost bipedal robot project developed by an individual maker. It uses consumer-grade servo motors, 3D-printed structural components, and IMU-based closed-loop control, with the goal of exploring the feasibility of bipedal locomotion control on a minimal budget.
Timeline (last 90 days)
The CBR-II robot is already able to walk.
CBR-II, a DIY bipedal robot project the developer has long been refining, recently released a project summary video.
The CBR-II project fully completed the closed loop of "simulation training → real-machine deployment," and the value of its write-up lies not in proposing a new algorithm.
The CBR-II robot is already able to perform a single-leg stand.
CBR-II uses reinforcement learning (RL) to train its walking control policy.
The V3 version update did not provide detailed technical documentation.
The next step for CBR-II may focus on closed-loop control parameter tuning for the single-leg stand, or on introducing more advanced gait planning algorithms.
The CBR-II project is continuously updated through platforms such as Reddit, demonstrating the advantages of open-source hardware and community collaboration; developers publicly sharing progress and challenges can receive feedback and inspire other enthusiasts to reproduce and improve it.
Users in the Reddit community shared a V3 version update of the CBR-II robot project, showing smoother gait control and preliminary attempts at a single-leg stand test.
One of the core improvements in CBR-II V3 is the achievement of a smoother gait.
14 more timeline events
All Facts (20)
The CBR-II project fully completed the closed loop of "simulation training → real-machine deployment," and the value of its write-up lies not in proposing a new algorithm.
50%UnverifiedThe CBR-II robot is already able to walk.
50%UnverifiedCBR-II uses reinforcement learning (RL) to train its walking control policy.
50%UnverifiedThe CBR-II robot is already able to perform a single-leg stand.
50%UnverifiedThe CBR-II project is continuously updated through platforms such as Reddit, demonstrating the advantages of open-source hardware and community collaboration; developers publicly sharing progress and challenges can receive feedback and inspire other enthusiasts to reproduce and improve it.
50%UnverifiedCBR-II V3 attempts a single-leg stand, but this feature is still experimental and may not yet be fully successful.
50%UnverifiedThe V3 version update did not provide detailed technical documentation.
50%UnverifiedOne of the core improvements in CBR-II V3 is the achievement of a smoother gait.
50%UnverifiedWhen CBR-II V3 receives a "forward" command immediately followed by "stop", the robot lands on its forefoot and then slams heavily into the ground, producing a not-quite-quiet sound.
50%UnverifiedThe DIY bipedal robot CBR-II shared by a Reddit user has iterated to the V3 version, and V3 shows a clear improvement in walking stability compared with the first two versions.
50%UnverifiedCBR-II V3 has begun attempting a one-leg balancing motion, but the author says that while the motion succeeds every time in simulation, in reality it is far from perfect.
50%UnverifiedThe author explicitly states that the CBR-II project may end here, at least for this year, with the pause attributed to the hardware being too fragile.
50%UnverifiedMost AI-assisted 3D creation tools currently still focus on static asset generation or simple scene understanding, and projects focused on camera movement and spatial relationships (such as CBR-II) are relatively rare.
50%UnverifiedThe CBR-II project is still in the development stage, and the creator said they are "in the process of teaching some tricks."
50%UnverifiedThe creator of CBR-II said that Opus is "really good in understanding camera position and movement."
50%UnverifiedThe specific implementation details, technical architecture, and final form of CBR-II are still unclear.
50%UnverifiedThe creator of the CBR-II project chose to share progress on Reddit rather than release a formal product, indicating that this is still an exploratory project.
50%UnverifiedReinforcement learning and sim-to-real transfer are widely applied in the field of robot control.
50%UnverifiedCBR-II, a DIY bipedal robot project the developer has long been refining, recently released a project summary video.
50%UnverifiedUsers in the Reddit community shared a V3 version update of the CBR-II robot project, showing smoother gait control and preliminary attempts at a single-leg stand test.
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