Simple Z Wave Watchdog

Had these laying around…
Particle Photon ($20) and Ecolink Zwave Door Sensor ($30)

The 3V out from the particle can also power the door sensor so no batteries!

Photon code (cycles the door sensor for 1 second every 30 seconds):

int led1 = D0;
void setup() {
pinMode(led1, OUTPUT);
}
void loop() {
digitalWrite (led1, HIGH);    
delay(30000);
digitalWrite (led1, LOW);
delay(1000);
}

HA Automation Code (text sent when there is no cycle “seen” by home assistant for 1 minute):

- id: '1590927848377'
  alias: 0..0 Zwave Watchdog
  description: ''
  trigger:
  - entity_id: binary_sensor.ecolink_door_window_sensor_sensor_6
    for: 00:01:00
    platform: state
    to: 'off'
  condition: []
  action:
  - data:
      message: Zwave Watchdog Timed Out
      title: Network Alarm
    service: notify.ha2textjbn