Video: two Arduinos binding, and the fail-safe

It needs two HC-05s on the bench. As Chapter 32 says, the binding hasn’t yet been run on two real modules for this edition: the sketches compile and pass host tests, and the AT commands come from the datasheet and two guides. The video will be that run.

It will show the chapter’s two tests. The link: with the bridge sketch on both boards, what you type on A appears on B. The fail-safe: hold the button, B’s LED lights, then unplug A and the LED goes off within a second, with fail-safe: off on B’s monitor. If the link test shows nothing, re-check AT+ROLE?, AT+CMODE? and AT+BIND? on board A.