Solar battery powered defense system. I’m confident the zombies are coming for us and so I am preparing with a security system built on raspberry pi, esp32 & loads of gear from adafruit/amazon delivery. The final system should have perimeter sensors (pir and break light sensors) that active pan tilt tracking cameras and deploy a tracking drone (weather permitted) with laser pointer and scary sounding robocop ed209 voice...

So far I have a camera working that can sleep when no motion and wake back up if low battery after enough charge.