How To Create Your First Flow In Node-RED 🌦 | Node-RED Basics
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- Опубликовано: 16 июл 2024
- Learn Node-RED by creating a Weather Forecast dashboard.
TITLE: How To Create Your First Flow In Node-RED | Node-RED Basics
Up And Running With Node-RED - RUclips Playlist:
• Up And Running With No...
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CHAPTERS:
==========
0:00 Introduction
0:55 Installing Node-RED
1:50 Creating the UI For The Dashboard
10:11 Creating Node-RED Flows For The Dashboard
REFERENCE LINKS:
================
Weather Dashboard GitHub Repo
github.com/bleedingcode/node-...
Open Weather Map
openweathermap.org
Rest Countries
restcountries.eu
Postman API Testing Tool
www.postman.com
MustacheJS
github.com/janl/mustache.js
Advanced Setup of Node-RED - Bleeding Code Tutorial
• Advanced Setup Of Node...
Node-RED Getting Started Docs
nodered.org/docs/getting-started
JSBin
jsbin.com
Bootsnip
bootsnipp.com
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This was my first deep dive tutorial on this channel. Let me know what you think and if you would like more content like this. Feel free to post any questions you may have below and I'll answer them asap 👍.
That was superb. I learned alot. Waiting for more content on this. Thanks
@@nadeemabbasi102 That’s great news Muhammad. Node-RED 2.0 was announced 2 days ago and comes with crazy functionality including the ability to debug your flow runs 😱. Will definitely be bringing out a video on that soon
@@BleedingCode Waiting for your next video. I love the way you explain things step by step. Please keep the pattern. Thanks Again.
@@nadeemabbasi102 Thank you Muhammad 🙏
@@BleedingCode I'm using node red from ibm cloud deployment services , I'm not able to use the "api/weather/dashboard" extension to get a dashboard , it's showing " Cannot GET /api/weather/dashboard"
It is awesome to see how quickly a person can bring things together to create something useful. Awesome video 👏🏻
Thanks Armand. Yeah it's definitely an exciting approach to creating services.
Thanks, I have been using Node-RED for a while, but you taught me quite a few new things. Much appreciated
Hi Derek. You're very welcome. Did you hear Node-RED V3 has been released 😎?
Just completed. The course was brilliant!
Awesome. I'm glad you enjoyed it :)
Hello, I recently discovered this chanel and I find the information related to API integration and node-red very valuable.
The guy made a lot of promesses about the following contents but there is nothing new for more than 4 months. I hope he is well.
Hi Miva. Thanks for watching my channel. Sadly challenges on my personal and professional side prevent me from being able to publish content at this stage. Hopefully this changes soon.
Wow perfect , thank yo very much
this is brillant, dynamic, well explainned.
Really glad you enjoyed it 👏
I'm all new to Node-Red and stuff, so I look forward to watching this. I also appreciate the left handed BC Rich warlock in the back ground :D
Haha well done noticing it was left-handed 👏🎸
@@BleedingCode Hah, only because I have the exact guitar and orientation! :)
Ah well there you go! 😎
Very good work!,thank you
You're very welcome :)
Thanks for this video learnt more than just about Node red
Hi Sven. You're very welcome 👍
high quality content!
Thanks so much for the positive comment 🙏
Really a great video - explaining all the things in an interesting content.
With all that code it is a little bit deep to me also with thinking as node red as a non code tool. 🙂
I am looking forward to see more of your great and interesting made videos.
Would also be great to see topics about using together with influxDB and grafana or just styling and organizing (structuring and navigation) the node reds dashboard itself.
Thanks for your feedback. I'll keep these topics in mind...although truthfully I have some ReactJS and Web3 stuff planned for the near future, which will be using Node-RED indirectly :)
You obviously are an expert.
How this video felt
Good morning class, today we are going to talk about the basics of flight
So
Get into your F16, and lets take off.
this is a cool project but by no means should it be considered a first flow
amazing
Thank you! Cheers!
Thankyou So much Brother I Appreciate your time and efforts
It's my pleasure :)
GREAT!!!+❤😮😊
Thank you 🙏
Thanks for the detailed explanation. If I understood it correctly, Node-RED benefit is to link together already implemented services/micro-services. I understood that it is quicker to build the flow visually than writing a code, but there are always a tradeoffs. For example, you can write dedicated templates, utils, helpers that are focused on exact project needs and speed up the processes without the Node-RED. Node-RED requires experience, knowledge of the team (extra time to study), conventions, debugging technics, etc. I suppose that you anyway have to build some custom Node-RED Nodes that exactly meet project conditions. Also, it is a definitely vendor-lock, classical source code is more flexible. I don't mean Node-RED is bad, I'm just not able to understand business cases where it will be definitely benefit. It is something new and unfortunately requires efforts to be implemented and integrated in current development process. So, please, if possible, record a video about the successful business cases, it will help a lot and it will be a great introduction to your Node-RED video series. Thanks!
Vendor-lock ..mmh more like technology-lock no, given Node-RED *seems* completely open-source. Is that what you mean?
@@freeedom22 Yes, I mean technology-lock. Thanks.
I downloaded your example flow from your github and it has some errors in it that prevent it from working out of the box. It gives me an API key error every time I run it. I did update the flow variable at the top of the flow with my API key and I tested it manually with Postman with no issues. I will eventually find the error, but I thought I would mention that your code example is broken on git.
I have been playing with NodeRed for about a year now and this taught me how to modularize and improve my existing flows. This was a very useful tutorial and I learned a whole lot of best practices and tips. Keep up the great videos.
Hi Mike. Oh wow that’s no good I’ll check that out immediately. Thanks for watching. I’ll touch base with you as soon as I fixed the issue 👍
Hmmm. Strange. Once I added a working API Key for Open Weather Map, the dashboard works fine. Can you maybe confirm what error you are still getting?
@@BleedingCode Yeah, I solved the issue. I was getting a 401 error. I ran a debug node and found that the forecast API link was failing because of the "daily/" at the end of the url. I removed that and it worked. I also had to modify the path to the temperature in the forecast because temp.max didn't exist in the API return document from the list object.
Process Results (Fetch 5 Day Forecast)
temperature: `${Math.round(tmpEntry.temp.max)}${flow.get('owmTemperatureUnit')}`,
to
temperature: `${Math.round(tmpEntry.temp)}${flow.get('owmTemperatureUnit')}`,
I really enjoyed this video, but I just had issue when I tried to implement it using your github. I have my code working now and I will be back for sure to watch your future videos. :)
I am still working out a bug with the 5 day forecast not showing the proper dates, but that will be a challenge for another day for me.
Here is the error.
Error: Invalid API key. Please see openweathermap.org/faq#error401 for more info. -
I confirmed that it occurred on a brand new nodered instance that I spun up on docker. I am not sure why you can't recreate it.
I fixed it by changing the flow.owmUrl5DayForecast variable from:
api.openweathermap.org/data/2.5/forecast/daily
to
api.openweathermap.org/data/2.5/forecast
This is the flow that I imported:
github.com/bleedingcode/node-red-weather-dashboard/blob/master/node-red-flows-final.json
@@BleedingCode I can confirm thatI also get the error when importing the github flow and updating to my [known workin] OWM API key
How do you reference output of an input node? I’m still new to Node Red. In high level programming, often they have a variable name. But I’m confuse how node red handles this.
In their documentation they explain this in detail, but every node is different. It's best to highlight the node and check their docs in the right-side pane.
Hi, I'm Getting this error
TypeError: Cannot read properties of undefined (reading 'max') - "Dubai"
Hi there. I created this video many moons ago and can't remember most of what's in it. I will need more context, but for now, somewhere the "max" property is being referenced, but the object it belongs to is undefined.
How to install node-red on computer with no internet? I am making a dashboard on public school computer which is not allowed to be connected to interest. They mostly use it for databases and I would like to install node-red, and other nodes such as MySQL - pls advise on how to get node-red offline, is there portable install files?
Sorry for the late reply on this. Did you come right?
@@BleedingCode no problem. I could not install node-red on the school computer as it was restricted. We tried raspberry pi, installed node-red but it was not pulling from SQL Express. The school uses MS SQL Express (freeware) and the node I was trying to pull data for dashboard node-red-contrib-mssql. The school ended up going with paid services for dashboard and other stuff. Think node-red still has ways to go to be useful in government sectors. When I tried to get school IT involved to install node-red, it was denied due to cybersecurity concerns
hi sir , Multiple user login in node red program? I searched a lot but couldn't find it
Well, multiple user login can be managed in different ways, but the issue is multiple users working on their own stuff in Node-RED. This is where it becomes an issue.
how can use drag and drop in node-red
Hi Kuldeep. Can you provide more info to help me understand what you're looking to do? The video shows in the beginning how to drag from the left palette. You click and hold on the node you want to use and drag it on to the canvas, of which you then release.
@@BleedingCode we create the dynamic node. If drag the node on flow chart then give the output on console
Flexing that right-handed metal guitar heh.
Hehehe are you sure right-handed? 😎
@@BleedingCode Ha yes my mistake, I meant precisely the opposite...the more rare kind of guitar precisely of course
@@freeedom22 I had to import it into South Africa. Many moons ago when life was less complicated 👍
At the end of the video, you didnt showed us the 2 mores rules you've added to the switch node
Ouch. How did I miss that. Apologies :(
i prefer tube amps
Hehe fair enough. The SpiderJam gave me an all in one solution for live and studio 🙂