This book provides a great way to learn about the use of Wi-Fi enabled microcontrollers by demonstrating several Internet-Of-Things applications of the ESP32 devices on small model railroads. The ESP32 is a powerful WIFI/Bluetooth-enabled System on Chip device that lets the programmer do a lot of cool things. The authors show ways to connect them to sensors, turnouts and transfer information to computers by using Wi-Fi technology. The first sections...