ESP32

A typical Pinout diagram:

All you need to get started on your own projects are a few low-cost ESP32s plus some prototyping boards and jumper wires. You also find a logic analyzer handy and to build the projects outlined in the book some specific sensors, servos and motors.  Luckily all of these  items are readily available from Amazon.com and if you make a purchase via these links you won't pay any extra and we'll get a few cents.
Just click on the product pictures or text links to go direct to the product. 

Tools, Sensors, etc