NTNU Raspberry Pi Box
What’s in the box: The content of the boxes is picked to work with the Raspberry Pi mini computer. Inside the box, you will find: 1 Raspberry Pi 3 1 Raspberry Pi, Model 1 B+ 1 16 GB micro SDHC…
Videos about Bluemix
Creating and pushing a Java app to Bluemix: https://www.youtube.com/watch?v=SYvdVUpghs8 Cloudant database: https://www.youtube.com/watch?v=8BBN3BWkmMM https://www.youtube.com/watch?v=Jj3CaODMweM Internet of things on Bluemix: https://www.youtube.com/watch?v=YHDhn5hGnn8 https://www.youtube.com/watch?v=E3HUvfIhNvM
Querying in a sql database Node-RED
Querying in Node-RED can be done in two different ways. 1. Having a query in a function node then sending it to the database node. Then selecting witch based on the message payload. 2. Having the query in the message…
Simple Node-red application
So here we have a simple app in Node-red. It recieves a json message with mqtt, then saves it in a cloudant database and a sql database. In this recipie I am going to show how it works. First you…
Saving Data to an SQL Database in Node-RED
In this recipie we are going to add a SQL Database to the app, then using it to save some data. Step1: Adding the Database First you ned to add a sql database as a servise to your app. Select…
Signing Up for IBM Bluemix
To sign up for Bluemix for first go to this url http://www.ibm.com/cloud-computing/bluemix/. Sign up using a email of your choice, and fill inn the necessary information. After signing up you need to redeem your code. This can be done folloving…
Creating a Node-RED App on IBM Bluemix
After logging in. Navigate to the Dashboard in the navbar. – Click on create app. – Make it a web app – Press “Browse Boilerplates” – Then select the Node-RED Starter Community BETA – – Choose a name, and press…
MQTT Broker
The address for the MQTT server in the lab is mqtt.item.ntnu.no via port 1883. Websockets are supported via port 80.
Writing a Recipe
What is a Recipe? This recipe explains how to write a recipe. A recipe is a short description of how to achieve some goal in the lab. Ideally, a recipe is focused on a single task. Since technical documentation is…
Using MQTT.fx Application
MQTT.fx is a Java program to send and receive MQTT messages. You can use it to check if your program send messages, or trigger your program by sending messages to it. Getting Started Below is given the main window view…