https://hackaday.io/project/191066-dementia-support-unit-bedroom-door-monitor
An Arduino based alert and logging system, including portable receivers for tracking 30+ room doorway motion sensors.
Folders:
doors_base - source code for the ATmega 256 base unit that collects, logs, displays, alerts and pushes alerts to the mobile units
doors_mobile - source code for the ATmega 328 handheld portable units that receive event broadcasts from the base unit
doors_node - source code for doorway monitor node, discontinued instead to wire the sensors to a shared hub node
doors_relay - source code for the shared node hubs that are wired to the motion sensors and relay event via radio to the hub
hardware - arduino ide board profiles for running a 328 at 1.8v brownout
images - self explanatory
libraries - all the arduino libraries needed for the source code
pcb - fritzing pcb layouts for the doors_node units
layout.odg - a map of the rooms showing tree network of the different units
manual.odg - a manual for end user reference