A while ago I did a hardware hack project that used an old wireless doorbell unit and an Arduino to make a push notifications enabled doorbell. It actually started out as a joke but the video got more attention than I would ever expected with a lot of requests to do a proper tutorial on it.
It took me a while but finally! Here it is! Thanks everybody for being so patient with me ;-)
You’ll find here the original video in which I demo the setup and after that the video on how to implement it from a Arduino sketch and Ruby point of view.
Essential for these kinds of projects is that you know what a pull-up/pull-down resistor setup is. Please make sure you understand the concept, it’s really important.
|Pull-up resistor setup|
The above image shows a pull-up resistor setup.I shamelessly stole this image from this wonderful article on Sprakfun which explains the concept in detail.
Okay! Now for the video’s, they’re long enough combined so I won’t keep you any longer. Ah! before I forget, feel free to leave a comment here with questions and suggestion.
Now for the how-to: