Welcome to my blog. This is mainly about IT, information management and Cyber Security with occasional forays into general technology, science and maybe even politics and beliefs.

I welcome feedback on this site and its content. Please use the contact form if you spot anything amiss with the site and use Disqus to talk about any of the articles.

There are 301 pages currently on this site. 235 blog posts, 60 knowledgebase pages, 6 about pages and 0 project pages.

Latest posts and knowledgebase articles

📖 Posts | 📎 Blogging | 🔖None

Switching from WordPress to Hugo

I’ve been fed up with the speed of WordPress for years but haven’t had the time to learn how to properly switch to an alternative. Until I discovered Hugo!

📖 Kb | 📎 Development | 🔖 Node-RED

Easily search for contributed nodes on the Node-RED Flows site

Excellent work has been done to make sure that new nodes are discoverable. Here is a quick way to easily search from your browser.

📖 Kb | 📎 Development | 🔖 Node-RED

How to create a clone of a message object

Node-RED tried to pass messages by reference not copy. Sometimes though, a copy is needed.

📖 Kb | 📎 Development | 🔖 Node-RED

How node.send() works

Some detail not included in the documentation.

📖 Kb | 📎 Development | 🔖 Node-RED

How to extract a table from HTML

While Node-RED has some nodes for extracting data from HTML, the nodes are rather simplistic. Here is a quick way to extract the data from an HTML table element.

📖 Kb | 📎 Development | 🔖 Node-RED

Installation and running permissions

People seem to get very confused about file permissions when installing Node-RED and associated nodes. This article tries to set things straight.

📖 Kb | 📎 Development | 🔖 Node-RED

Secure Home Automation Controls via a Telegram Bot

Shows how to create a secure set of home automation controls without exposing Node-RED to the Internet. It uses a Telegram bot with a number of pre-defined commands.

📖 Kb | 📎 Development | 🔖 Node-RED

Understanding the Node-RED Runtime API

Node-RED exposes an extensive API at runtime. While most of this is not available within your flows, much of it is available to custom nodes. Unfortunately, documentation for the API lags behind development. This page documents some of the key things I’ve learned about the API, what it does and how it works.

📖 Kb | 📎 Development | 🔖 vscode

VSCode - multiple cursors

VSCode supports multi-cursor editing, here are some tips on using it.

📖 Kb | 📎 Development | 🔖 Node-RED

Node-RED Dashboard Template Examples (AngularJS)

Some examples of using AngularJS with the Node-RED Dashboard. Not all features of Angular are accessible via the Dashboard.

📖 Kb | 📎 Development | 🔖 Node-RED

Making Node-RED available over the Internet

There are already too many people putting up insecure services over the Internet. Please don’t add to this problem. This article explains a simple way to get some level of connectivity to Node-RED over the Internet without security issues. It also explains some of the wider issues and where to go for more details.

📖 Kb | 📎 Development | 🔖 Node-RED

How to use the ACE editor in the Function node

The ACE editor is used in the function node to help you create well-formed JavaScript. However, there are now a number of different versions of JavaScript and it is sometimes helpful to use slightly different styles of coding to the defaults.

📖 Kb | 📎 Development | 🔖 Node-RED

How to extract a substring from the msg object

Node-RED passes a msg object between node instances in a flow. It is common to need to extract a sub-string and there are multiple ways to achieve this. Here are some simeple examples.

📖 Kb | 📎 Development | 🔖 Node-RED

Node-RED - Courses and Tutorials

A list of some tutorials and courses for learning Node-RED and Node.JS, maybe some web stuff too.

📖 Kb | 📎 Development | 🔖 Node-RED

Node-RED - debugging flows

Some hints for debugging Node-RED flows