Learning to build a robot arm will teach you how to breadboard a circuit, how to program your Arduino, and how to work with moving parts.

The aim was to build a line following robot armed with a circular saw to handle lawn edging tasks. The circular saw itself consists of a motor with a blade on it, and precisely no safety features.

The auto company has partnered with research firm SRI International to make an "autonomous motorcycle-riding humanoid" meant to exceed human riding capabilities.

As robots become smart enough to detect our feelings and respond appropriately, they could have something like emotions of their own. But that won’t necessarily make them more like humans.