ESP8266 MQTT PIR Sensor

ESP8266 MQTT PIR Sensor. Compatible with Home Assistant's MQTT sensor and binary_sensor

Hardware Example

Software Setup

• Using Atom or VS Code, install Platform IO

• Once setup, install the esp8266 embedded platform

• Rename src/setup-template.h to src/setup.h and add your network, MQTT and lighting setup information. Take note of the deviceName you set. You will need this later to subscribe to MQTT messages.

• Build the project (Ctrl+Alt+B) and check for any errors

  If the build produces an error referencing dependencies, You will need to manually install these libraries:

  • ArduinoJson
  • PubSubClient

• Upload to your board of choice (Ctrl+Alt+U). This project was created specifically for the NodeMCU but can be configured to work with another WiFi board with some tinkering.

Example Home Assistant Configuration

This example creates a binary_sensor with an automation to brighten a light_group, if another light sensor is below a threshold and a someone is home, then dimming the lights after 10 minutes if the PIR does not detect movement. This will only occur if the lights are still on.

binary_sensor:
  platform: mqtt
  name: Kitchen PIR
  state_topic: sensor/pir001
  payload_on: 1
  payload_off: 0

automation:
  - alias: Kitchen Motion Detected
    trigger:
      - platform: state
        entity_id: binary_sensor.kitchen_pir
        to: 'on'
    condition:
      - condition: state
        entity_id: group.phones
        state: home
      - condition: numeric_state
        entity_id: sensor.sn1_ldr
        below: '450'
    action:
      - alias: Wake Kitchen lights
        data:
          entity_id: group.kitchen
          brightness_pct: 80
        service: light.turn_on
  
  - alias: 'Reset kitchen lights 10 minutes after last movement'
    trigger:
      platform: state
      entity_id: binary_sensor.kitchen_pir
      to: 'off'
      for:
        minutes: 10
    condition:
      - condition: state
        entity_id: group.phones
        state: home
      - condition: numeric_state
        entity_id: sensor.sn1_ldr
        below: '450'
      - condition: state
        entity_id: light.kitchen_room_lights
        state: 'on'
    action:
      service: homeassistant.turn_on
      entity_id: scene.reset_kitchen_lights