Prototye scripts for a IoT h-da group project
Install Dependencies with npm install.
Run Project in Root Folder with npm start.
The Topic Wording is very important to remember.
It has to be in this style: location/ID. For example mini/1 or speis/2
The Topic is build in two parts:
- Location
- ID
The Location can be either mini or speis. These differentiate between our two delivery places Mini-Speisekammer und Speisekammer
The ID is a Number ascending from 0 to infinite.
In combination this creates the Topic Wording which has to be used throughout the project.
The Message of each MQTT Notification deliveres either the current status of each Mini or Speis or triggers an action at the station.
The Message can contain a variation of statuses:
Status
openreservedloadedempty loaded
Each describes the status of the location it is reporting of.
Actions
open lock
To make sure to get the status of all locations, even when they are not reporting, the Messages have to have the Retain flag set to true.
In qr is the page located which the delivery driver is navigated to, to trigger an action which signals the station to play a sound, light up the LEDs and open the lock.
The QR-Codes content is a simple link to a webpage. This an example for local development:
http://192.168.0.248:3001/qr?type=mini&id=0
This URL also includes som Querys which is needed to identify the type and the ID of the station. In future releases this can be requested with a random id which then receives the data of an database.
The prototype is partly hosted on https://fresa-delivery.herokuapp.com/.