Make It Connect · Chapter 28
Video: the car driving, and the fail-safe
The video
The video of the finished car driving isn't filmed yet. It's on its way, and it will go on this page: the QR in your book stays the same.
It will show the two things Chapter 28 asks you to see: the car driving from a free controller app, speed digits 1 to 9, and the car stopping by itself when the commands stop arriving.
You can run the second one now, wheels off the table, with the chapter’s step 6: hold Forward, then switch the phone’s Bluetooth off. The wheels stop within FAILSAFE_MS, and the Serial Monitor prints fail-safe: no command, halted. Only when that passes does the car go on the floor.
Where to go from here
Every sketch in the book, including car_app.ino →The web-page remote: drive an HM-10 car from Chrome or Bluefy →The App Inventor controller and its blocks →The L298N: every pin, the wiring, a tested sketch →The book: Make It Connect →