Hi and Welcome to Steve’s Internet Guide.

The first wave of the Internet involved connecting people to each other and people to information.

The next wave of the Internet will involve connecting the physical world to the Internet, and machines to each other (M2M – Machine to machine).

Although the Internet of Things will make use of the existing Internet and Internet technologies t will introduce new technologies and services.

This site is currently focused on the MQTT protocol which looks like becoming the main protocol for IOT projects.

Software will play an important role in the IOT and I will also cover Node-Red,node.js and Python.

Recommended reading

• Introduction to the MQTT messaging protocol.
• MQTT Hosting,Brokers and Servers
• MQTT and IOT dashboards
• node-red course.

If you have any questions please ask

Best Regards Steve

The function node is used to run JavaScript code against the msg object.

The function node accepts a msg object as input and can return 0 or more message objects as output.

This message object must have a payload property (msg.payload), and usually has other properties depending on the proceeding nodes. (more…)

If you’re new to mongoDB and are looking to use it on one of your IOT projects then you might find my working notes useful.

Install –

• Manual links to install on multiple platforms
• How to Install mongoDB on Windows 10.

The database files are stored in c:\data\db on Windows (default) and in the folder /var/lib/mongodb on Linux (Raspberry pi). (more…)

In MQTT the process of sending messages is called publishing, and to receive messages an MQTT client must subscribe to an MQTT topic. (more…)

Preface

This is a discussion post and these are currently my thoughts on this topic. I would be grateful for comments and feedback.

Introduction

MQTT is still in the early stages of deployment and currently is used only on private networks.

However with the growth in the adoption of the MQTT protocol for information distribution the number of public brokers and topics will probably increase substantially just as happened with websites in the early days of the internet. (more…)

HTTP is the protocol that powers the Web,and is the most common protocol on the Internet.

Because http is a request/response protocol a visitor viewing a web page must issue a new request in order to refresh the data. (more…)