Many robots called "open source" release only a URDF and a demo video. Shanghai-based RoboParty has published a lot more for its ROBOTO 01, also called the RP1. The company's GitHub organization holds mechanical CAD, schematics, PCB layouts, Gerber files, a bill of materials and assembly documentation. It also holds the software side: a Linux BSP, communication and device-interface code, robot descriptions, deployment tooling, and projects for locomotion training, motion imitation and tracking. The robot itself is a 1.35 m humanoid. The base RP1 has 24 active degrees of freedom and the RP1 Pro has 30.
CNX Software reported the release on 23 October 2026. The specifications below come from RoboParty's Chinese-language product page and from CNX Software's write-up, with each figure attributed to its source. One caveat from CNX comes up repeatedly: not everything is fully open, and the embedded firmware source for the ROMOMO joints was not found in the published repositories.
The Robot in Numbers
RoboParty's product page lists both versions at 1.35 m tall, with a size of 1350 x 450 x 200 mm. The page gives a weight of about 39 kg for the RP1 and about 41 kg for the RP1 Pro. Both figures include the battery and end effectors. RoboParty also lists these figures:
- Active DoF: 24 (RP1) / 30 (RP1 Pro)
- Max running speed: up to 4 m/s
- Payload: 3 kg
- Peak joint torque: 160 N.m (100 mm joint module)
- Max step height: 50 mm
- Slope: 30 degrees
- Endurance: 3 h
The product page breaks the joint count down by limb, and CNX Software repeats it. The RP1 has 6 DoF per leg, 5 per arm and 2 in the waist, which adds up to 24. The RP1 Pro has 6 per leg, 7 per arm, 2 in the waist and 2 in the head, which adds up to 30. The extra degrees of freedom on the Pro go into the arms and a moving head, not the legs. Both versions share the same lower body.
The running speed, payload, slope and endurance figures are RoboParty's own ratings. Neither source describes independent testing, so treat them as claims. RoboParty also notes that motion performance and endurance vary with load, terrain, battery state and software configuration.
Joints: ROMOMO
The joint actuators are a separate project called ROMOMO. The GitHub overview describes the ROMOMO repository as "Joint modules, firmware and host tools." RoboParty's product page lists four in-house module designs with a two-stage planetary, inner-rotor structure, and says the 100 mm module reaches a peak torque of 160 N.m. The pages we read did not give a per-joint torque table for the other modules.
CNX Software adds an important qualification. The ROMOMO repository provides joint-module specifications, drawings, CAN-FD protocol documentation and test reports, and host-side motor drivers are in a separate roboparty_motors repository. But CNX could not find the embedded firmware source for the ROMOMO actuators in the published repositories. So although RoboParty calls RP1 fully open source, the actuator firmware itself should not be assumed to be available. Each joint module has a built-in driver that closes the current, velocity and position loops locally, with the main controller talking to it over CAN-FD.
According to CNX Software, the structure uses AL6061 aluminium for the shoulder, arm, wrist, thigh and lower-leg parts and AL7075-T6 for the foot plates, and the operating temperature is -10 to +40 C. RoboParty's page gives the same temperature range.
Compute and Control
The RoboParty product page lists the RP1's base compute as an RK3588 and the RP1 Pro's as an RK3588 plus an A733, with an Orin NX (16 GB) listed in a separate development-compute row. CNX Software adds more detail. On the RP1, the RK3588 has a 6 TOPS NPU and is paired with 8GB LPDDR4x and 32GB eMMC. CNX identifies the Pro's second processor as an Allwinner A733 and lists a Jetson Orin NX 16GB for the Pro, with an optional development computing module for the standard RP1. Buyers should check the exact configuration with the maker.
Alongside the application processors, CNX Software reports a 480 MHz MCU that handles motion scheduling, power sequencing and emergency-stop functions. This is the usual split for legged robots: Linux runs perception and policy, and a microcontroller closes the fast loops.
Connectivity listed on the product page:
- Wi-Fi 6, Bluetooth 5.2, 4G
- 2x USB-A, 2x USB-C, 2x RJ45
RoboParty's page lists 6-DoF dexterous hands as standard on the RP1 Pro and a monocular RGB camera; the standard RP1 ships with dummy hands and no camera. The robot also takes four interchangeable heads.
Hands
The GitHub organization includes a repository called RP Hand. CNX Software describes RP Hand as a five-finger dexterous hand with six actively controlled axes and CAN-FD communication. RoboParty's page also lists optional 6-DoF or 22-DoF hand configurations. The pages we read did not say whether the 22-DoF hand design is in the published repositories or is an add-on only.
Power and Safety
RoboParty's product page specifies a 10 Ah battery with a 1.5 h charge time. The page says the battery is hot-swappable without shutdown and supports 140 W USB-C and magnetic charging. CNX Software describes the power system as a 48V main battery plus a 30V auxiliary battery that keeps critical control power up during battery replacement. RoboParty rates endurance at 3 hours.
For a roughly 40 kg machine that the maker says can run at up to 4 m/s, the emergency stop matters as much as the battery. RoboParty lists a three-channel e-stop with a remote and a body-worn device, and CNX Software reports that it can be signalled either over a hardwired connection or by 433 MHz radio.
What Is Actually in the Repositories
The Roboparty/RP1 overview repository describes itself as "An OpenSource Full-Stack Platform for Agentic Humanoids." It links to these sub-repositories among others:
- rp1_hardware - mechanical source files, electronics, testing and assembly SOPs
- ROMOMO - joint modules, firmware and host tools (see the caveat above)
- RP Hand - the dexterous hand
- RP1_TEST - full-machine testing
- roboparty_joystick - the controller and app
- roboparty_deploy - the deployment framework
The overview repository says it does not accept pull requests, and it had 16 commits when we read it. It works as an index, so any development activity will happen in the sub-repositories. Licensing varies. The overview repository carries GPL-3.0, and CNX reports that RoboParty's original hardware designs are under CERN-OHL-W-2.0 while the UFO learning framework is under CC BY-NC 4.0, a non-commercial license. Check each sub-repository for its own terms before investing time.
CNX also notes that parts of the software are still under development. The 24-axis configuration already supports a training-to-deployment workflow, but the 28-axis body configuration CNX associates with the Pro has no dedicated training tasks or released default policy files at this time.
What It Means for Makers
Be realistic about the audience. A 1.35 m, 39 to 41 kg humanoid with 48V power is a lab platform. It is not a weekend kit. University groups, robotics clubs with real workshop space, and engineers who want to study or modify a complete humanoid stack will get the most from it. For them, the main value is that so much is published together. You get the mechanical CAD and Gerbers, the joint-module documentation and CAN-FD protocol, and the locomotion-training and motion-imitation code in one place. You can follow a control policy from training code down to the CAN-FD interface of the joint modules, though not, per CNX, to published actuator firmware source.
Many people will never build the full robot and will still find parts of the release useful. Possible uses:
- Using the ROMOMO two-stage planetary joint documentation as a reference for your own actuator
- Studying how a working humanoid splits work between an RK3588 and a 480 MHz real-time MCU
- Reusing the RP Hand CAN-FD hand design on another arm
- Running the training and robot-description code in simulation with no hardware at all
On price and availability, we did not find a price on any of the pages we read: RoboParty's product page, the GitHub overview and CNX Software's report. CNX states that RoboParty does not confirm pricing or a shipping schedule for the RP1 and RP1 Pro. What has been released is the open design and code on GitHub. Anyone who wants to build an RP1 from the published BOM should expect a substantial parts bill, since the robot has up to 30 active degrees of freedom, and the cost of building one has not been published.
One safety note: this is a heavy, high-torque machine with a 48V battery system. Follow RoboParty's own assembly documentation and safety guidance, and do not improvise on the power system or the e-stop.
