Here is an ultra simple Arduino Night Alarm project wired around a handful of inexpensive ... For example, you can make your circuit sound an audible alert (and fire a warning lamp) whenever it ...

There’s a huge market for 433 MHz alarm system hardware out there ... From there, the code on the ESP can fire off using whatever API works for your purposes. In this case [Aaron] is using ...

We don’t think we’d want to trust our fire safety to a robot carrying ... “What do I do with that flame sensor that came in the big box of Arduino sensors I bought from China?” ...