My core51822 module has caused me a bit of headache. The headers are 2.00mm pitch rather than the typical 1″ (2.54mm) pitch. This makes it incompatible with regular 1″ pitch breadboards. Being double row makes it worse.
Month: February 2018
Finally – off the breadboard and into a working environment. It’s currently working for 433mhz sensors, I will possibly be adding more frequencies later. For now I will continue refining the code to release it on github.
A few issues. I accidentally flipped the polarities on the siren. I will eventually implement a 12v regulator to up the voltage for the siren for the full 120db power.
My cat set off one of the motion sensors at 6AM, activating the siren. I need to adjust the sensitivity or get pet-friendly motion sensors.
I will be using two Custom firmware routers to get full house coverage on a very old house with thick lead filled walls. The entire project took 6 hours due to some unexpected issues we faced. You can flash any device below as well to Merlin custom firmware but its entirely optional. This will work with the stock firmware.