Posing with a smile: A man took a selfie with Ameca, a humanoid robot, at the Cornwall Festival of Tech in the UK on Feb 18. The robot is developed by a UK company called Engineered Arts. Compared to other humanoid robots, Ameca stands out for its facial expressions, which are perfect for interactions. To provide excellent motion quality, Ameca is equipped with 32 high-precision aerospace-grade servo motors (伺服电机).