With the software side of my Home Sensor up and running, there is only one technical issue to solve: the door sensor. A perfect moment to play around with an OP-AMP and Comparator.
With the new hardware ready, I continue to rebuild my Home Sensor system. Last week I replaced the Raspbery Pi for an ESP8266, this week I’ll be working on the new protocol my Home Sensor will be using.
A little over 2 years ago I worked on a project in which I connected my alarm’s sensors to the web using my first Raspberry Pi. And while it still didn’t help me to lower the crime rate in my peaceful village, it turned out to be a very handy toy. Unfortunately, the system had some minor flaws, so it’s time to work on an improved solution.
Although one can argue a soldering iron can have a lot of emotional value, I don’t think my Man Cave aka The Xonay Mansion contains a lot valuable items. Never the less, the idea of some protection makes me sleep better. Unfortunately a regular alarm system has such an annoying interface I never tend to turn it on. And more important: it’s an extremely closed system resulting in a lot of unused possibilities. Not that I need a reason, but these facts are reason enough to built my own modular alarm system.