My take on ultra low power, battery-based, low-cost, real-time trigger sensors to monitor doors and motion or make them act as wall switches. You can see them in action in the video!
It uses microAmps while in standby and has a trigger time of 240ms.
Designed using ESP8266, Attiny and ESPNOW.
Code and Schematic:
https://gitlab.com/MrDIYca/ultra-low-po ... ng-esp8266