Researchers at the University of California Berkeley have designed the Berkeley Humanoid Lite, a low cost humanoid robot that enthusiasts can build at home. Powered by an Intel N95 mini PC, the bipedal machine relies on 3D printed components and standard brushless motors to keep total assembly costs under $5000. But extended testing shows that mechanical backlash builds up over time as the plastic parts wear down.
The robot stands 80 centimeters tall and weighs approximately 16 kilograms. Its main computer is an Intel N95 mini PC, which processes movement routines and responds to directional walk commands. Operators can also direct the machine through Steam VR for manual control. The chassis uses a modular layout. Builders can reconfigure the base parts into a quadruped or adapt the layout into a larger robotic system.
Building the hardware requires standard workshop tools. Every structural frame part, cycloidal reducer, and magnetic encoder fits on a common 3D printer with a 200 by 200 by 200 millimeter build area. Brushless electric motors supply the drive power. The printed cycloidal gearboxes achieve up to 90% mechanical efficiency. Running at high speeds under heavy mechanical loads causes noticeable thermal buildup, but the actuators operate reliably under typical walking conditions.
During a 60 hour continuous stress test, the robot demonstrated steady walking performance. The plastic gear teeth experienced gradual surface wear, which created minor joint play toward the end of the run. Keeping the total parts budget under $5000 makes the platform practical for academic labs and developers who need an affordable testing rig for bipedal locomotion algorithms.
