https://www.youtube.com/watch?v=y9XC5yHR5Bk
This is by far the best and cheapest home security motion sensor system I have seen yet. It will send you a text messgae or email any time motion is sensed in front of the sensor! Just plug it in via any micro USB charger and you will know if anyone comes in to your home, driveway or anywhere else you would like to monitor for motion.
Download the code here: https://github.com/MKme/Wemos-D1-ESP8266-PIR-Alarm
Wemos D1 Mini: https://amzn.to/2Klcs9z
Passive Infrared Sensor (PIR): https://amzn.to/2MoGNEY
Download my i3 Mega printer profiles here: https://github.com/MKme/I3-Mega-Resources
If you build this hit that thumbs up and let me know in the comments!
No longer do we need to be reliant on systems that cost us hundreds of dollars- just make one (or more) of these motion sensors and you can secure your entire home on a tight budget. Add smoke sensors, heat sensors or anything else to the unused I/O on the board- just make sure you share your code as well to help everyone!
Cheers. Eric