Version 2
This monitor senses and records the time of an activity. It is designed to sense whether an elderly parent is awake and active in an apartment remote from the observer. Any sensor can be used such as PIR, light, sound, temperature, water, etc. This system requires an internet Wi-Fi connection.
Requirements:
1. Hard coded Wi-Fi SSID and password
2. Port forward (default 8027)
3. Static LAN IP
4. (optional) Dynamic DNS
Port forwarding and static LAN IP address require changes in parameters in the router.
Hardware:
- 1X Wemos D1 R2 Mini or NodeMCU coded as a web server
- 1X AM312 PIR sensor connected as an interrupt. A HC-SR501 or HC-SR505 can be substituted.
- 1X (optional) LED for visual indication
- 1X 5 Volt DC wall wart power supply
Middle : WeMos D1R2 Mini with AM312 PIR Sensor
Operation:
- Install the activity sensor with the PIR pointing to a potential movement area, ex: where a person might walk. A wall AC outlet is required for power.
- When a person enters the room or walks past the sensor, the unit will increment an activity counter and store the current time.
- When you query the unit (ex: 192.168.0.xx:8027 or my.dynamicDNS.net:8027) via a browser, it will return the number of interrupts (activity) and elapsed time since last activity.
Example:
query: http://dad.duckdns.org:8027
response: Activity count: 5: 0 days 3 hours 29 minutes 15 seconds
Program code (sketch) available on Code Page page
