Adam Lite

Adam Lite is the entry-level version of PNDbotics' full-size bipedal humanoid Adam, built by PNDbotics in Beijing as a locomotion and reinforcement-learning platform for researchers and students. It stands 1.67 m tall and weighs 60 kg, with 25 degrees of freedom: six in each leg, three in the waist and five in each arm, and it carries simple spherical hand end-effectors instead of dexterous fingers. It uses the same PSA quasi-direct-drive actuators as the larger Adam models, with peak torques of about 340 N·m at the hip and knee, about 46 N·m at the ankle and about 60 N·m at the arm, and walks at up to 1.5 m/s. A NUC12WSKi7 computer runs PNDbotics' whole-body control and model predictive control balance algorithms, and a 1172 Wh battery powers the robot, which connects by Wi-Fi 6 and Bluetooth 5.0. PNDbotics documents an Adam Lite reinforcement-learning workflow with training, play, sim-to-sim and sim-to-real steps built on Isaac Gym, plus an SDK, URDF and MJCF models and VR teleoperation. Labs use it to develop walking and balance algorithms before moving up to the arm- and hand-equipped Adam models.