Some time ago I wrote about HighCharts – a wonderful set of Javascript tools for doing graphs – and I gave an example of getting the graphs into Node-Red. I’ll not repeat that as you have the link above. At the time I’d not added in databases, I’ve since made…
Category: node-red-dashboard
Garden Data Collection
This entry is all about InfluxDB, Grafana and a cute little Bluetooth garden sensor! Some time ago a pal of mine and I did some swaps of spare kit and I ended up with a Mi Flora sensor. A rather pleasing looking device, the MI Flora has a 3v lithium…
Node-RED Global Flow and Context
There’s a mouthful. This short article is about the various kinds of variables used in Node-Red and more importantly how to initialise them and how to view them. So in Node-Red when you want to use variables – there are three basic types as well as local variables. So for…
Node Red and HighCharts
First things first – HighCharts are not free for commercial use. However, for your own website, a school site or a non-profit organisation they are free to use. You are also OK to make modifications. So – that’s the “cover my back” bit out of the way – now, how…
NR Templates and the Inject Node
When testing Node-Red, the common INJECT node is invaluable. Indeed it is just about the only way to instantly inject information into another node. Here is a typical example. It doesn’t get any simpler than this. Here I have merely dropped an “Inject” node onto the Node-Red working surface along…
Thermometers
Three thermometers in a row for Node-Red (or as many or few as you like really) for Node-Red Dashboard. Another fine example of simple gauges and unlike some it is easy to make multiple gauges on one page – I will demonstrate three. Here is the library source, I grabbed…
Yet Another Gauge
This one has been long in coming because despite my quickly evolving knowledge of Javascript and Canvas, that last leap – getting variable information out of a canvas and back into Node-Red – has kept me on edge for a couple of days now. Dave (DCEEJAY) pointed me to various…
Another LCD
When writing that last blog entry about an LCD with time and date display and programmable temperature for Node-Red Dashboard, it occurred to me that it would be worthwhile making a simple one-liner (6*1) LCD with a 20-character display. At the same time I wanted to simplify it right down…
LCD Display for Node-Red
As must be obvious by now, I’m on a roll here. Having decided that Node-Red Dashboard is the way forward ( would in the past have used BLYNK or Imperihome) I’ve been getting to grips with the dashboard and as you’ll see if you check recent blogs I’ve had a…
RGraph with Node-Red
Having gone from spending countless hours staring at HTML5 CANVAS, I’m now at the “meh” stage as it starts to dawn on my how it works. And so it was that I stumbled on RGraph – or put another way, Christmas for widget-lovers. If you’ve been following these blog entries…
A Thermostat Weekend
As I make changes and I don’t want to bore readers – I’m adding sections at the top of this article and moving earlier versions of the stat down the page. If you are new to this you might want to start at the bottom at the point in this blog…
Node Red Weather
This blog entry is now HISTORICAL as DarkSky have pulled a fast one on everyone except Apple users. A later blog entry here has more information on alternatives. One of the many things that Node-Red makes easy to capture – is the weather – and until recently, all credit was…
Node-Red on a Phone
I have to hand ALL the credit to Dave at the Node-Red Google Groups for this – and you might want to pop any questions in that direction because I know even less about running Android at the command prompt than I do Debian! Running Node-Red on your Android phone…
Node Red Dashboard
As regular readers and fans of node-red will know, I’ve been a fan of node-red-contrib-ui for some time – I wrote about adding security to it some time ago and until Imperihome came to my attention I was developing pages based on this. But, sadly the fellow developing it ran…