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Currently I am running version 1.1.1 off node red on my Raspberry Pi.

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And in this lecture I'll show you how to upgrade to the current version 2.1.

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It doesn't really matter which version of note rate you are using in your instance of this project.

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The process is the same, so I'm using the instructions that you have already seen in the introductory

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part of this course where I showed you how to install note rate on your Raspberry Pi and turn the page

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that should be looking at a stock's getting started.

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Raspberry Pi.

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And back then we used this bash command to install a fresh instance of note read.

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We're going to use the exact same command now to install the upgrade.

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So I'm going to copy this command.

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And here in my terminal window, I've already logged on to my node red Raspberry Pi as user pi and just

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paste this command in here and hit enter and that will begin the process which can take about ten or

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15 minutes depending on the speed of your Raspberry Pi hour and your Internet connection.

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So let's go through it.

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So I'll say yes to this question or when to proceed and of course, install the PI specific nodes.

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And I'm just going to let it do its thing while I wait.

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And at this point, I'm going to fast forward to picking up.

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Okay.

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And that process is now complete.

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We've got this script that has upgraded note rate to version 2.10.5, as you can see here.

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He did not make any changes to Node.js that I already had because the current version is sufficient

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for Node 2.1.5.

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Although I could get the same script to also upgrade node to chase runtime.

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But before I do anything else, let's go over to my web browser and check to see what is happening with

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my node institution and to refresh this page.

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And of course, it's not running, so let's have a look at how to get it started again.

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So to start the node thread service, I'm going to use this command here.

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No direct to start.

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So copy that and paste it in here.

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And New Red is now starting.

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It's a system D service.

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Give it a few more moments.

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There's the finish loading up.

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And we're back up and running.

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So in my browser again, refresh the page and there is no trade 2.1 and I can hear the pump motor in

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the background.

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You may be able to hear that as well that it just started so you can follow the tour guide, which will

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take you through the new features on the user interface level.

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I'm just going through all those fairly quickly, and I'm going to spend more time exploring those new

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features in upcoming lectures in the section.

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All right.

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And close.

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And I've got my currently active running slow here in the tap.

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And let's have a look at the user interface or the dashboard, I should say.

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Just open it up in a new tab.

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So everything seems to be working fine.

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I'm just going to increase the threshold for the pump so that it doesn't start to motor.

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I'll put it up to 600.

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Like that.

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And that.

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That value here for the pump threshold ensures that the motor will not just start randomly and everything

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seems to be working there.

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Soil humidity, the air humidity, air temperature, the various widgets up and running.

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Emanuel Pump control is also working.

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And everything looks fine.

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And of course, the version of note rate that is now running is 2.1.5.

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So the upgrade is complete.

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Now, one last thing that I want to do here is to get rid of the start and boot.

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So I'm going to use this command for that.

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I'm just going to hit control C to get back to the command line and paste.

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Jimmy Garoppolo so you can see it and pace the system.

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City l command enable.

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And now the no trip instance will begin when the Raspberry Pi starts its double check that my note read

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instance is still working even though I hit control C because it's running as a service, you can see

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that it is working the Wichita operating properly and getting updates from the ESP three to.

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All right.

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She'd say also that I haven't made any changes at all in the sketch that is running on the ECP 32.

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The only changes that are made there are what you have just seen, namely to upgrade the instance of

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note rate to version 2.1.5.

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While we are.

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Edward Pettit wanted to show you one more thing that you can do here with the installation or upgrade

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script right here.

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You noticed that when I ran the barebones version of this command line, the bash command line, the

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script maintained my current version of the Node.js runtime because it's sufficient for the version

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of Node Red that I'm upgrading to.

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However, I do have the option to upgrade to Node JS 14 or 16.

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Now to do that, it's actually quite easy.

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Let's have a look.

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I'm just going to clean up here, paste the same command part instead of running it.

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Bare bones.

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I'm just going to use the help switch just to see what the options are.

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So if I don't have a node version, then as you can see here, the script is going to install Node.js

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14 by default unless there is an existing compatible version of no teacher.

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Yes, in which case it's going to leave the current installation, the current version of Node.js intact.

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In my case, I'd like to actually upgrade to Node 16.

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So to do that, just replace the help switch with Node 16 and run the same command again.

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And yes, I want to proceed the same questions asked.

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Go for the PI specific notes and then the script will now upgrade the version of note to read and then

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install Node.js version 16.

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So again, I'm going to fast forward this bit and then continue.

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Once the installation is.

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Okay, that's complete.

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So the script removes the old version of Node Red and the old version of note to use and then installed.

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She has 16 LTE s and no direct code 2.1.5.

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Let's test it out.

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First thing to do would be to restart node red as a service.

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Give it a few moments to spin up.

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And so we'll look at close this down and just have a look at my web browser.

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So I know Dredd has restarted.

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And again, 2.1.5 and I'm going to go to the dashboard.

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And increase that threshold to 600 so that the pump motor doesn't start.

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All right.

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So everything is back to normal.

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All right.

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Can do control.

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See, to get back to the command line.

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I know.

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Trade still running in the background.

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And if you haven't done so already, then you can set the service to start on boot.

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I should be okay because I've already done it.

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In my case.

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It doesn't hurt to do it again though.

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So be careful just in case.

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So let's wrap it up for this lecture.

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I have now upgraded Node Red to version 2.1.5 and I have confirmed that my existing terrarium controller

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flows still work.

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So in the next few lectures in this section, I'm going to walk through some of the most important or

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interesting features of Node Red Version two and show you how they work.