The Hornet Nest Alarm Panel, to which hacker [Patrick van ... and Bluetooth combination, this system ticks every DIY box. Hackaday has featured other DIY PoE-powered projects, offering more ...

But instead of getting a whole new system, he decided to upgrade his circa 1993 Gardiner Gardtec 800 alarm with an ESP32. As it so happens, the original panel has an expansion connector which he ...