Not one but two of my robotics books are in a Humble Bundle on Robotics & Automation Engineering! 🤖
18 books: Raspberry Pi robots (Learn Robotics Programming 3rd Ed + my Pico book), ROS 2, drones, LEGO Mindstorms, PLCs, Arduino and home automation. A $722 value, pay what you want from $25.
https://www.humblebundle.com/books/robotics-automation-engineering-mastery-bundle-packt-books