IoT Development for ESP32 and ESP8266 with JavaScript: A Practical Guide to XS and the Moddable SDK

© Peter Hoddie and Lizzie Prader 2020

P. Hoddie, L. PraderIoT Development for ESP32 and ESP8266 with JavaScripthttps://doi.org/10.1007/978-1-4842-5070-9_6

6. Hardware

Peter Hoddie¹  and Lizzie Prader¹

(1)

Menlo Park, CA, USA

 

Sensors and actuators are integral parts of nearly every IoT product. Sensors gather data from the environment, such as the temperature, humidity, and light levels, and translate it into electrical signals that a microcontroller or other system can react to. Actuators do the opposite: they take electrical signals and translate them into physical actions, such as turning a motor or a light on or playing a sound.

Just as there are different networking protocols that define how data is shared over the network, there are different ...