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
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…
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…
New Day, New Dial
WHAT a day I’ve had – messing around with a supposed DIY Alexa that isn’t… and getting to grips with dials. I wasted a lot of time on this (sorry Dave) before finally grasping the solution. Here is the LATEST short video (Jan-10-2016) So – in the last blog entry…
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…
Node-Red Objects to File and Back
This is a major re-write of a year-old blog. At the time, I simply wanted to store a global object in a file and retrieve it. Things have changed, I realise the way we did this was awful – hence the re-write. One way is to save the object as…
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…
A Brighter Node Red
Just today – an upgrade notice for Node-Red appeared in my in-box. Upgrade details are here. What is Node-Red? Details here – if you’re not using it or at least investigating it – you may be missing out. Now, the support guys (Google groups here) are VERY clear about required…
Even More Node Red Contrib UI
As I write this – several conversations are going on around node-red-contrib-ui – and in the process I’ve found issues with the security setup in Node-Red itself – which have been fixed. Since I started this – the designed of the UI has responded to requests for gauges and a…
Node Red Modules
All now published – though I now use a function for thermostatic functions so for me the last one is a bit redundant – but big-timer is my all time favourite I’m using all over the place and I use esplogin to watch out for units logging in – like…
Drilling into Blynk
Yesterday I referred to using DELAY in Node-Red to slow down one of the Blynk controls. To backtrack a little… We’re talking here about controlling devices such as ESP8266 boards using MQTTT – which I maintain is the best way to have a boatload of devices around the place and…
Backing up Node-Red
For anyone looking in for the first time – I have a home control system based around ESP8266 boards and the odd Arduino. They talk MQTT to a Raspberry Pi which acts as a central controller – using Node-Red – the greatest thing since sliced bread. I’m in the process…
A GroveStreams Node Red Node
One of the more obvious things to do with a home control system is to capture information like temperature and humidity – and to graph it. For example I spent part of my time in the UK and part of it in Spain. When I’m not in Spain it is…
A Node-Red Websockets Web Page
Updated 26/04/2015 I’ve been after this ever since I discovered Node-Red.. and right up until this yesterday I was tearing my hair out – having settled for NETIO as my interface of choice and constantly being annoyed by the slow pace of progress with this interface. So what is this…
ESP826 + Pi + MQTT + Node-Red Heaven
If you’ve been following the blog you’ll note I’ve spent a lot of time getting to grips with the Raspberry Pi, Node-Red, the ESP chips using C and of course my earlier home control attempts with NETIO, the NRF24L01 boards and Arduino clones (all of which are working 24/7 –…
NODE-RED Development
While I’m sitting in a hotel in Birmingham waiting to do my bit in this month’s #FSBCONF I thought I’d drop down a few notes about Node-Red which is definitely my new toy of choice when it comes to a central hub for home control. I say toy, sitting on…
So Many Things to Do Video
I’ve been meaning to update the blog – and I just keep getting sidetracked with the many interesting possibilities of Node-Red…. so – I put a short video together here. Should be something of interest in it. https://www.youtube.com/watch?v=xoQ_Fs31xtM Pete Node-Red on The Raspberry Pi