Node–RED is a fantastic and powerful yet easy to use programming tool for wiring together hardware devices, APIs and online services in new and interesting ways. For more information on Node-Red go to the Node-Red site. After all, you probably don’t turn the outside lights ON at 6pm!! You most…
Category: node-red
SQLITE3 Raspberry Pi Problems and Solutions?
If like me, upgrading Node-Red (in my case on Raspberry Pi) is often problematic – then it may well be worthwhile reading this update – at last solving a long-lasting issue including SQLITE and other installs which rely on NodeJS. If you regularly upgrade a Node-Red installation which makes use…
RFLink – 433Mhz Remote Control and Node-Red
Many moons ago I just happened to be staying overnight with my pal Jonathan and he had some surplus (and so free) Byron 433Mhz wireless doorbell-pushes to demonstrate. He showed me a universal RF 433Mhz receiver board he purchased with which could look at the signals from the various kinds…
More Node-Red Dashboard Success
This is a blog entry from 2016 that I’ve just updated.. In an even earlier entry the subject of Node-Red Dashboard, you’ll see I can hide that top menu if needed (the blue menu is great on a phone – not much use on a thermostat)… and then I discovered…
November Quickie – Stress – TDM and ESP-GO
A few simples notes on probably my pet project and also some work that Antonio and I have been doing recently including a quick stress test for the Pi4, for those concerned about heat… remember I wrote about a combined heatsink/case? With this: sudo apt-get install stresswhile true; do vcgencmd…
Node-Red Persistence
How could I POSSIBLY be so SLOW? For many months, after originally coming up with my own mechanism for making Node-Red variables persistent across power cycling – and then promptly forgetting about it, I’ve been conveniently ignoring the relatively new official way to do this… This morning, just out of…
The Thermostat Continues
Hard to believe the amount of time I’ve spent on this thermostat and the backup unit. I’m still too deeply buried in R&D right now to fully develop another full article but here is some information to add to the previous blog entry on the subject. My Node-Red/ESP-GO thermostat is…
Node Red Initialisation
This is a post from back in March 2017 – but as I’d forgotten all about it, I thought you might like to share my renewed enthusiasm if you are a Node-Red user. NR introduces non-volatile flow and global variables in version 0.19 but if that doesn’t work for you,…
Waiting for Peter, closing out 2017
MrShark at the console, while we’re all waiting for Peter to come back, let’s try to add some new content to the blog 🙂 I’ve a couple of new boards to test, unfortunately they’ve to wait I receive their PSUs… material for an other time 🙂 So, I’ll add some…
A Quick Plotly
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…
A Fine Sunny Weekend
Evening all, it has been a busy weekend here at the Scargill’s man-cabin. No Friday, frequent blog-visitor JAY popped over for a visit and we spend some time discussing new stuff: First on the list was a new toy Jay just picked up on offer at Maplin – a “SmartSensor…
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…
SteelSeries and Node-Red
You should read the previous blog entry before this one – as the principles are the same as are some of the details such as the location of your /myjs folder for Node-Red – so read the other article first. This guage IMHO is the best yet! To run the…
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…
The Ongoing Knob
I refer you to this article if you’re new in here – https://tech.scargill.net/more-dashboard-goodness/ – we’ve been having a lively discussion and lots of exciting new possibilities coming out of a chance discovery of the JQUERY KNOB and what is now our ability to integrate that with Node-Red. The purpose of…
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…
NPM Update Status
If you are a Node-Red fan (and if not – why not) – you’ll know that the NODES – i.e. the modules that are provided with Node-Red or that people like myself create – get updated every now and then. And it is a pain in the bum to keep…
Fauxmo Alexa Delights
I’m going to cut a very long story short here. I’ve been looking at ESP8266 emulations of WEMOs because up to now this seems to be a popular device to emulate when using with your talking Amazon Echo. If anyone wants to come up with something that will take ANY…