1 Introducing Circuit Playground Express

The world around us is becoming increasingly interactive. Objects react to people and people react to objects. We interact with smart assistants like Amazon Alexa, Google Assistant, Apple Siri, Microsoft Cortana, and IBM Watson. Though “smart,” they require a constant connection to the Internet and expensive interface boxes.

Smart objects may be more modest and special purpose, often for a very low cost. We may wish to wear clothing that blinks when we walk or that indicates when something is happening, such as the weather getting colder. The technology needed to run these and similar projects is modest in comparison to corporate smart assistants. Small, programmable electronics can be programmed by ...

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