WallPanel

WallPanel is an Android application for Web Based Dashboards and Home Automation Platforms.

Features

• Web Based Dashboards and Home Automation Platforms support.
• Camera support for streaming video, motion detection, face detection, and QR Code reading.
• Google Text-to-Speech support to speak notification messages using MQTT or HTTP.
• MQTT or HTTP commands to remotely control device and application (url, brightness, wake, etc.).
• Sensor data reporting for the device (temperature, light, pressure, battery).
• Streaming MJPEG server support using the device camera.

Hardware & Softare

• Android Device running Android OS 4.1 or greater. Note: Android 4.0 devices use WebView to render webpages, The WebView shipped with Android 4.4 (KitKat) is based on the same code as Chrome for Android version 30. This WebView does not have full feature parity with Chrome for Android and is given the version number 30.0.0.0. If you have issues with Android 4.0 devices, you may want to use the legacy version of the application.

Quick Start

You can either side load the application to your device from the release section or install the application from the Google Play store. The application will open to the welcome page with a link to update the settings. Go to settings, and setup the link to your web page or home automation platform. You may also update additional settings for Motion, Face Detection, and for publishing device sensor data.

Support

For issues, feature requests, comments or questions, use the Github issues tracker.

MQTT Sensor and State Data

If MQTT is enabled in the settings and properly configured, the application can publish data and states for various device sensors, camera detections, and application states.

Device Sensors

The application will post device sensors data per the API description and Sensor Reading Frequency. Curerntly device sensors for Pressure, Temperature, Light, and Battery Level are published.

Sensor Data

Sensor	Keys	Example	Notes
battery	unit, value, charging, acPlugged, usbPlugged	{"unit":"%", "value":"39", "acPlugged":false, "usbPlugged":true, "charging":true}
light	unit, value	{"unit":"lx", "value":"920"}
magneticField	unit, value	{"unit":"uT", "value":"-1780.699951171875"}
pressure	unit, value	{"unit":"hPa", "value":"1011.584716796875"}
temperature	unit, value	{"unit":"°C", "value":"24"}

NOTE: Sensor values are device specific. Not all devices will publish all sensor values.

• Sensor values are constructued as JSON per the above table
• For MQTT
  • WallPanel publishes all sensors to MQTT under [baseTopic]/sensor
  • Each sensor publishes to a subtopic based on the type of sensor
    • Example: wallpanel/mywallpanel/sensor/battery

Home Assistant Examples

sensor:
  - platform: mqtt
    state_topic: "wallpanel/mywallpanel/sensor/battery"
    name: "WallPanel Battery Level"
    unit_of_measurement: "%"
    value_template: '{{ value_json.value }}'
    
 - platform: mqtt
    state_topic: "wallpanel/mywallpanel/sensor/temperature"
    name: "WallPanel Temperature"
    unit_of_measurement: "°C"
    value_template: '{{ value_json.value }}'

  - platform: mqtt
    state_topic: "wallpanel/mywallpanel/sensor/light"
    name: "WallPanel Light Level"
    unit_of_measurement: "lx"
    value_template: '{{ value_json.value }}'
    
  - platform: mqtt
    state_topic: "wallpanel/mywallpanel/sensor/magneticField"
    name: "WallPanel Magnetic Field"
    unit_of_measurement: "uT"
    value_template: '{{ value_json.value }}'

  - platform: mqtt
    state_topic: "wallpanel/mywallpanel/sensor/pressure"
    name: "WallPanel Pressure"
    unit_of_measurement: "hPa"
    value_template: '{{ value_json.value }}'

Camera Motion, Face, and QR Codes Detections

In additional to device sensor data publishing. The application can also publish states for Motion detection and Face detection, as well as the data from QR Codes derived from the device camera.

Detection	Keys	Example	Notes
motion	value	{"value": false}	Published immediately when motion detected
face	value	{"value": false}	Published immediately when face detected
qrcode	value	{"value": data}	Published immediately when QR Code scanned

• For MQTT
  • WallPanel publishes all sensors to MQTT under [baseTopic]/sensor
  • Each sensor publishes to a subtopic based on the type of sensor
    • Example: wallpanel/mywallpanel/sensor/motion

Home Assistant Examples

binary_sensor:
  - platform: mqtt
    state_topic: "wallpanel/mywallpanel/sensor/motion"
    name: "Motion"
    payload_on: '{"value":true}'
    payload_off: '{"value":false}'
    device_class: motion 
    
binary_sensor:
  - platform: mqtt
    state_topic: "wallpanel/mywallpanel/sensor/face"
    name: "Face Detected"
    payload_on: '{"value":true}'
    payload_off: '{"value":false}'
    device_class: motion 
  
sensor:
  - platform: mqtt
    state_topic: "wallpanel/mywallpanel/sensor/qrcode"
    name: "QR Code"
    value_template: '{{ value_json.value }}'
    

Application State Data

The application canl also publish state data about the application such as the current dashboard url loaded or the screen state.

Key	Value	Example	Description
currentUrl	URL String	{"currentUrl":"http://hasbian:8123/states"}	Current URL the Dashboard is displaying
screenOn	true/false	{"screenOn":true}	If the screen is currently on

• State values are presented together as a JSON block
  • eg, {"currentUrl":"http://hasbian:8123/states","screenOn":true}
• For REST
  • GET the JSON from URL http://[mywallpanel]:2971/api/state
• For MQTT
  • WallPanel publishes state to topic [baseTopic]/state
    • Default Topic: wallpanel/mywallpanel/state

MJPEG Video Streaming

Use the device camera as a live MJPEG stream. Just connect to the stream using the device IP address and end point. Be sure to turn on the camera streaming options in the settings and set the number of allowed streams and HTTP port number. Note that performance depends upon your device (older devices will be slow).

Browser Example:

http://192.168.1.1:2971/camera/stream

Home Assistant Example:

camera:
  - platform: mjpeg
    mjpeg_url: http://192.168.1.1:2971/camera/stream
    name: WallPanel Camera

MQTT and HTTP Commands

Interact and control the application and device remotely using either MQTT or HTTP (REST) commands, including using your device as an announcer with Google Text-To-Speach.

Commands

Key	Value	Example Payload	Description
clearCache	true	{"clearCache": true}	Clears the browser cache
eval	JavaScript	{"eval": "alert('Hello World!');"}	Evaluates Javascript in the dashboard
audio	URL	{"audio": "http://<url>"}	Play the audio specified by the URL immediately
relaunch	true	{"relaunch": true}	Relaunches the dashboard from configured launchUrl
reload	true	{"reload": true}	Reloads the current page immediately
url	URL	{"url": "http://<url>"}	Browse to a new URL immediately
wake	true	{"wake": true}	Wakes the screen if it is asleep
speak	data	{"speak": "Hello!"}	Uses the devices TTS to speak the message
brightness	data	{"brightness": 1}	Changes the screens brightness, value 1-255.

• The base topic value (default is "mywallpanel") should be unique to each device running the application unless you want all devices to receive the same command. The base topic and can be changed in the application settingssettings.
• Commands are constructed via valid JSON. It is possible to string multiple commands together:
  • eg, {"clearCache":true, "relaunch":true}
• For REST
  • POST the JSON to URL http://[mywallpanel]:2971/api/command
• For MQTT
  • WallPanel subscribes to topic wallpanel/[baseTopic]/command
    • Default Topic: wallpanel/mywallpanel/command
  • Publish a JSON payload to this topic (be mindfula of quotes in JSON should be single quotes not double)

Google Text-To-Speach Command

You can send a command using either HTTP or MQTT to have the device speak a message using Google's Text-To-Speach. Note that the device must be running Android Lollipop or above.

Example format for the message topic and payload:

{"topic":"wallpanel/mywallpanel/command", "payload":"{'speak':'Hello!'}"}

Credits

WallPanel (Formerly HomeDash) is a fork from the original WallPanel project developed by quadportnick.