K0 (AI Sapiens)

The K0 opens the AI Sapiens line from ROBOTIS and is conceived as a fully open bipedal humanoid for universities and schools. It stands 1.3 m, weighs 34 kg and has 23 degrees of freedom: five per arm, six per leg and one in the waist; there are no hands, and each arm lifts 3 kg.

All joints use 48 V DYNAMIXEL-Q actuators, fourteen QM-060 modules at 450 g and nine QM-080 at 850 g, with 12:1, 16:1 or 20:1 reductions. A 46.8 V 9 Ah battery stores 421 Wh; runtime and walking speed are not published. Onboard computing is an NVIDIA Jetson Orin NX 16 GB rated up to 100 sparse INT8 TOPS.

ROBOTIS plans to release the bill of materials, CAD files, source code, simulation, tutorials and 3D-printable covers in stages; because the DYNAMIXEL-Q actuators are only scheduled for the second half of the year and the open files are still announced rather than available, the status is prototype. Intended uses are AI development, teaching and sim-to-real transfer. Pricing is on request from the maker.

In height, weight and joint count the K0 almost matches the ROBOTO Origin, another open design but with a different actuator lineage.