ฝัง
- เผยแพร่เมื่อ 17 มี.ค. 2017
- In this video, I use Peter Scargill's script to build a cheap Mosquitto MQTT broker for less than 20$ and in less than 30 minutes.
In addition, I implement an MQTT message / data logger using SQlite and PHPliteadmin. The whole thing is based on DietPi
Links:
www.sensorsiot.org/diet-pi-sup...
Peter Scargill: tech.scargill.net/the-script/
Node-Red Flow based on: flows.nodered.org/flow/36f2de3...
Pi Zero W Image File:
sensorsiot.org/transferFiles/P...
From: Alex Sfyrakis1:
For those who have problems seeing the root html just run the following commands:
sudo wget www.scargill.net/iot/index.html -O /var/www/html/index.html
sudo wget www.scargill.net/iot/reset.css -O /var/www/html/reset.css
If you want to support the channel and buy from Banggood use this link to start your shopping: bit.ly/2jAQEf4 (no additional charges for you)
/ andreas-spiess-7331894...
/ spiessa - วิทยาศาสตร์และเทคโนโลยี
Amazing! Communities are really pushing the entire IT industry forward with an unprecedented pace! Thanks (both of you) for sharing! Big LIKE
You are welcome!
Excellent - glad you got it running - there are some changes coming to the script very soon - keep looking in. It will only get better.
Thanks for your work. Subscribed to your channel.
Nice work.
Can I plug the SD card into a RPI2 B+, instead of RPI Zero? I don't have a Pi Zero but have many Pi2's.
Yesterday, I was just thinking about how I could do this. What a delight to find your presentation on this very topic! Thank you very much, Andreas.
You are welcome!
Andreas, 48hrs ago I didn't have a clue about any of this stuff. Words like MQTT and Node-red meant nothing to me. I've had some time off work to learn a new skill. From your image I now have everything working. Well done to you and Peter Scargill for such great work. I really have the bug to learn more. It just goes to show that you are NEVER too old to learn a new skill. Happy New Year !!
Thank you for your feedback and welcome aboard! Actually, also Peter and I are no more considered to be young by age. Only in our heads, we try to stay at least flexible... Happy New Year to you, too
Fantastic work. Many thanks to you Mr. Spiess and ofcourse to Mr. Scargill
:-)
Amazing Andreas how much value you bring in 10 minutes .. each and every time ...
Thanks! I learned, that you guys (the viewers) only spend 5 minutes in average with my videos. So, why should I make 60 min videos? ;-)
2 years old but still relevant. Thank you Andreas! And Peter Scargil
You are welcome!
Worked a treat, many thanks for the image file.
Wow! Mr Spiess you're a great teacher👍
Thank you!
Thank you very much for creating the pi zero img file.
+David Manning You are welcome!
Hi Andreas, I love your videos and they have been a great source of inspiration for many of my projects!!! Thanks so much for sharing your image file for this. It has come in very handy!!! Keep up the great work!
Thank you for your feedback and your nice words!
Awsome as usual Andreas your efforts are priceless!
Thanks!
Great video. Love the information.
I'm setting up my PI as a headless server. I was unfortunately unable to user your image for some reason, but, following your directions, I'm able to get my pi setup. Took a little over three hours.
Thanks for the details.
+Kelly Sumrall You are welcome!
I currently hacking a Atari 2600 to host a PiZero for an RetroPie console. I love the PiZero! My next project will include multiple ESPs for temperature sensores, event counters and number transmissions for displays. So your work saved me from hassle even before it has started. You are THE BEST!
;-)
Great work Andreas, looking forward to see more from you.
Thanks!
Really enjoyed this video Andreas. I'm new to this subject and struggling to get my head round the logic. Thanks for an informative video
You are welcome!
The image is really great work and it's an even greater idea to distribute it freely... Thanks!!!
You are welcome!
Im really happy to see he is still updating his script even today
:-)
Great work !!
This is very helpful. I really appreciate your work here !!
Thanks!
Great work as always! Thank you so much for sharing it with us.
+Ciprian Bindiu You are welcome!
Big thank you (and to all who made this possible). I did not actually knew the wifi-version of this existed, and this is exactly what i've have wanted. Will buy a Zero W tomorrow :)
Please be aware that the zero is very slow.
@@AndreasSpiess If it is more or less like a raspberry pi 1, then I am fine with it. :)
Thank you for the image file. It really saves me a lot of time.
:-)
Very nice Mr Spiess! Looking forward to the next one (as always...)
Thanks for your feedback!
exactly what I needed! already ordered my pi 0 w
+Simon Filiatrault :-)
superb timing. And really a good idea. TU
I already have a couple of Pi Zeros (v1.2 & 1.3) so I've been putting off getting a Pi Zero W, since the previous Zeros work OK with a USB hub and USB Wi-Fi dongle. I was hoping that would work for this project. Then I read on Pete Scargill's Tech Blog that he already tried that, and it works great. Thanks again for both the SD card download, and this video.
+Art Becker I tried my image also on an old Zero. It worked, too
Very nice LE SUISSE !!! very interesting and sharp in the description, swiss style!!!!
Thank you!
Great.... just doing some idle Sunday morning cruising the TH-cam channels and when I see one of your videos. I will take some time to view it because your content is great. Now I'm fully down the rabbit hole fully learning about MQTT and NodeRed. Thank you for introducing some "to me" new technology. GeekMustHave
You are welcome. Enjoy!
Awesome video! Thanks for sharing
Absolut tolle Videos, die mich dazu inspiriert haben, mein Appartement als Probelauf für das künftige Haus zu automatisieren. Danke dafür und bitte genauso weitermachen:)
Das ist ja wunderbar. Dann weisst du auf was du beim Hausbau achten musst. Die meisten älteren Häuser sind ja nicht gut für die automatisierung eingerichtet...
Great time saver, thanks Andreas.
Pi Zero on order
+Christopher Taylor :-)
I wish I had this script when I installed all these manually on my Pi3 last year.
It was a painful process that took me days to setup and configure.
I can now use the script to do a clean install of everything on my Pi2 and Pi3 ( don't have a PiZ).
Didn't know about the DietPi. Looks amazing.
Thanks Andres
I am interested about your results if you run this script in an existing (not clean) environment, because I also have one like that...
10-4
Great video, as usual... Congrats! You always anticipate the work we must done giving ready-to-use lot of experienced hours in few minutes. I red few comments: in my opinion 10 minutes of video are the best way to stay concentrated and to capture almost all we need. Bye
Thank you for your nice words! It is, as you say: It costed me quite some time to get there and I thought, I can make it a bit easier for you...
I asked and you delivered👍👍👍 thank you thank you thank you
I know what I'm doing today
So, good lock. Hope, it works!
I just finished to install OpenHab on a new PI 3 with OpenHabian script.
I think I will add Node Red too, looks nice!
Please continue with this kind of videos, they are great!
Thanks for your feedback!
Bravo!!!! Amazing! Looks like you are reading my mind! It's what I was going to make by myself next week as I got my Zero W. I already tested MQTT and Node-red with psf b85 (ESP8285) (Thanks to your mailbox post) but it was on my Laptop. Now I even do not need to install mqtt and nodered as you made an image! And even with sqlite! Thank you thank you thank you! It will save a lot of my time! I'd like to hug you very tight!
well, Peter's script exists from more than an year, what Andreas did was just using that and publishing what that script produced on a specific device... nothing more, nothing less, nothin else...
You are right. And here, we have the prove, that technology is only effective if it finds its consumers... This was my part today ;-)
For those who are interested in using Peter Scargill's script in 2020, please be aware that he no longer supports its use on both the Raspberry Pi Zero AND using DietPi. Checkout his site for more info before descending down that rabbit hole.
tech.scargill.net/the-script/
Another fantastic video!
I just achieved a milestone that I think you'll enjoy… Over the past week I have watched all of your videos from number 1 to this one!
The information and knowledge was great! I also made sure to press "Like" on each one ;-)
Watching Andreas TV is much better than normal garbage TV we have in USA!!!
Many thanks… I will continue to watch and also "Like".
One closing note: I was so disappointed when I checked TNN mapper and found only three gateways for LoRa in the entire United States with one of the three due to be decommissioned :-( ... why?
Thanks & Keep up the great work !!!
1. Thanks for your support!
2. I count more than 2 (www.thethingsnetwork.org/map). And, of course, you can change that it if you add your own gateway ;-)
Great video thanks a lot, really looking forward for some ESP32 videos
You are welcome. The ESP videos will come...
Yes, wery usefull. thanks for your time in explanating and showing how to get thou to Matt and node Red, AND YOUR OWN COPY OFF THIS COMPILATION TO A SD CARD. Thanks 👍😀🇨🇭
+Asger Vestbjerg You have also to thank Peter! He did the big work. I am just standing on his shoulders.
Perfect!
Thank you so much.
You are welcome!
I had great success with this on both a Pi-Zero with a WiFi dongle, and with a Pi-3. Thanks to both you and Peter for this contribution. But seeing that Peter added comments in the Christmas script in March about successful testing with a NanoPi M1 & M3, coupled with the fact that I've been looking (waiting) for a beefier alternative to a Pi-Zero, I thought I'd look into getting this working on a NanoPi. Well, looking no further than ArmWorks selling a NanoPi2 (only slightly larger than a Pi-ZeroW, but with a 1.4GHz Quad Core Cortex A9 processor) for $15-shipped, I experimented a little. Here are my findings:
Well, all did not go too well. The first stickler was that the closest DietPi SD image available to a NanoPi2 was one on the DietPi website for a NanoPi M2. Outwardly, it seemed that the most significant difference was the lacking of an ethernet port on the NanoPi2--shouldn't be too significant, so I installed it. Everything seemed to be okay, except for two things. 1) upon booting and displaying the normal information before allowing user logon on terminal 1, the input was blocked. However, an Alt-F2 switch to terminal 2 got around that. Eh... not perfect, but workable. 2) when installing either LXDE or XFce, neither would work--seemed to be failing during X.
But having gotten that far, the Christmas script seemed like halfway-good idea. Well, it did run... but with a generous amount of errors; mostly having to do with file-system access or something missing from the internet. It was minimally successful; Mosquitto broker worked, but the web server did not. So..... no ability to test further.
Anyway, would you be willing to take a shot at this? I would gladly provide the NanoP2. Thanks.
Thanks for your long feedback. I am glad that my viewers try things and report it for other viewers!
I am not a LINUX guy. This is why I have to stick with the most standard platform, even if better ones are out. Maybe one day I know a little more...
..very nice, thank you for sharing
+jimbob dooley :-)
Thanks for providing the package on github. Will try out when I get my Pi Zero.
:-)
Big thumbs up !
used your image, ok on pi-zero with usb-wifi and usb-ethernet, same config also worked on rpi3 with onboard networkdevices,
only 1 problem in piZero/pi3 : need to restart mosquitto first, nice surprise to find webmin on port 10000.
Installed mqtt.fx 1.3.1 on windows 10, good for load testing to send many messages very fast (see script option).
Using putty to see htop on rpi + another session to see network load using iftop.
Thanks for your tips! Yea, Peter added a lot of stuff...
Very nice! I have been logging my solar data to Adafruit.io and now easily I can set up my own broker.
Wieder etwas gelernt. Danke!
Bite, gern geschehen.
Very helpful indeed
Thank you!
Great, Great Work! I am a fan of your videos, great source of knowledge and inspiration.
Can one find the MQTT Test Flow and MQTT Logger Flow in the SD or do you have to build them?
Thank you
It should be on the SD card. Maybe you have a look at one of my last videos where I have an updated SD card (But not for the zero).
Thanks Andreas, again and again!
My pleasure!
Congrats, good job
Thanks!
Congratulations Andreas, that is superb. Almost too easy if one's goal is to learn but like a bait for a $10 Pi Zero W fishing hook. Thanks again!
+Garry Keogh I still have a lot to learn. And I prefer to start with something working. Especially as a beginner. ;-)
I think you are misunderstanding me Andreas! I mean you make it too easy for us mere mortals if OUR goal is to learn, the whole script + config ready to run! It makes a very convincing argument for a total newbie to "dip a toe in the water" with a Pi Zero W if it is put in front of them in such a complete package! Thanks again. Garry
No, no. Please be aware, that, at the beginning of this year, I did not know anything about MQTT, Linux, LoRa, and Raspberry Pi. So, I also had to learn a lot. But it is always frustrating, if I start something, and get error messages during installation or setup, because then, I have no idea where the problem could be. That is why I love scripts and other helpers. With them, I get at least a chance to succeed.... I can add complications later, when I understand a little more.
Haha! We have a similar starting point but you clearly have more talent than me!!! :)
@Andreas Spiess: I had a little trouble running your SD card image, more specifically testing the mosquitto broker.
I found that the broker would refuse connection without authentication and I had no idea of passwords set. I found I could change the configuration slightly to allow anonymous connection which inside my firewall for test is OK.
I navigated to the configuration file and used the nano editor to open the file for edit as below
root@DietPi:~# nano /etc/mosquitto/conf.d/websockets.conf
I edited the line:
allow_anonymous false to read -> allow_anonymous true
Then saved the settings with Ctrl and O before I exited the file with Ctrl and X before a reboot to load the new settings.
Everything works superbly, thanks again
Andreas, how do I become a paid subscriber?
You have given so much, it is time to support you for your tireless efforts.
I really don't know how you achieve so much and deliver it so eloquently and clearly..
Without you, I am lost.
Many thanks to you and Peter Scargill, what a wonderful collaboration.
👍😀
There is no need for more support. I get a few dollars from TH-cam and I can buy some stuff for free from Banggood (because of my sponsored link). The rest is hobby. And my time is more than rewarded with the feedback I get from my viewers like you!
Bless You
That is kick A$$, Andreas!!!
Awesome !!!!!!!!!
+Jonas Hansen :-)
Andreas this was an excellent tutorial. I got it working on a Pi3 but it took quite a bit more than the 30 minutes. Perhaps a few days of tweaking the sql code. I particularly like the date note for node red so it displays the last update. I will use that on everything from now on. thankyou.
Maybe you watch also my newest videos on the topic?
INCREDIBLE
:-)
Thank you very much!
You are welcome!
Andreas I'm stuck. I've got so far thanks to you and Peter Scargill. 3 weeks ago I didn't know anything about this stuff. I've now got everything working and ready to flash a Sonoff device. I'm going to use Tasmoda. This is probably a really simple question but my inexperience is showing. Tasmoda has many language options and I need to choose English. The Tasmoda config asks this question "Uncomment one of the lines below to build/upload only one environment" I don't know what to do. This isn't an intuitive question for a novice. Sorry for my ignorance. Kind regards Douglas
Uncomment usually means to delete the slashes at the beginning of a line. Two slashes // mean, that the rest is considered comment.
just downloaded ... and I'll try to install it an a RasPi3
thanks again for your great work
+Urs Marti Please report back, how it went.
Urs Marti I'm also very interesting about the raspi 3 Installation! And: How much time does it take to run?
sorry - it did not work by plugging your image into a RasPi3
doesn't it see with ip-scan attached via ethernet :(
then I tried to modify config & cmd to access to it with USB/Ethernet. also no success.
now I take the time and install it from scratch for the RasPi3
This is not a surprise, because the dietpi does many adjustments during the first install (maybe also to the environment it runs on?). So, the way would be, to install your OS of choice and apply the script. It should run much faster on the -3 than on the zero.
the image Andreas published is meant to be used on RPi0, RPi0W and maybe on RPi1B, nothing else...
these boards use armv6 arch, while quite all the others use armv7 and usign Peter's script is best, because there are other optimizations in those cases... and you get php7, too, which is less memory hungry than the 5 which is in this version... running the script is a matter of minutes, than go away, return after about an hour and you're done... we spent very long time optimizing everything on every board... i'm the MrShark you'll find on his blog...
Andreas - thanks for another great video. I watched last night and thought “interesting but what could I possibly need this for?This morning I woke up & realized this is the MISSING LINK to datlogging the esp8266 and esp32 based automotive test equipment I built for my shop. Now my fuel injector tester and my air flow bench will be able to automatically log the test points as mqtt messages!
And if you look at the newest script of Peter you see that he included Graphana for Graphic representation
I personally wouldn't send the 'timeStamp' column in the SQL INSERT. I prefer to config the column as 'CURRENT_TIMESTAMP' in the PhpAdmin, and it will write the timestamp by itself.
I prefer doing this because it's easier, and pretty useful for iot applications where using less code can also be trivial.
I have to say that I really like your content and this video made me learn more things :). Life's about learning.
Thank you for your tip!
Nice video I will try DietPi for sure. One note you can enter the wifi password without a monitor. Solder headers to the Pi Zero and connect a FTDI adapter.
Thanks for the tip. I did not know that (I am new to Raspberry and Linux)
Thanks, Mr. Spiess. You earned another subscriber.
(August 2020) I tried your image onmy Raspberry 3 B, but it didn't boot. Tried several SD cards, but no success.
Then I went directly to the DietPi download page and tried their images there (both the 32 bit and the experimental 64 one) but those didn't work either. Maybe I'm missing something?
Luckily I could run Pete Scargill's script on a Raspbian image.
Welcome aboard the channel!
This is an old video and I only use Raspbian OS now. You find more up-to-date videos on this channel.
Hello Andreas, Thanks for sharing this very interesting project and providing the pre-installed image. It's really amazing!
I tried to upgrade the node red software and also some nodes (e.g. openweathermap) - but struggled. Any chance that you can provide an image of this project with the latest software versions (also dietpi os)?
I cannot support all my videos. But using Peter Scargill's script you can build your own. It just takes time.
I had a couple of thoughts since you're using DietPi (my personal favourite). You can enter a hostname in dietpi-config and then you don't need to worry about the IP address so much. Also, Dietpi supports external USB memory/drives so you can configure a USB drive for all your user data. Its faster and less risky than writing to your SD card :)
I read that Peter wanted to include the hostname feature in his script. Maybe it is already done... I will have a look at it.
Concerning SD card: I have an old HD on my main Raspby. But here, I carry the risk of losing everything. I do a backup from time to time.
Great work Andreas, thank you. Will your image work on Pi2/3 also?
+Pete Stothers No, you have to use peter's script
I'm running it as-is on a '3. Works great!
Great video. Do you think this Pi needs a heatsink for this application when it is in a case?
I do not have a heatsink on my Pi zero and it does not get hot
I am half swiss and I can confirm this man's accent is aggressively Swiss.
:-)
You're a legend
:-)
Excellent, so helpful. I won't need to use ThingsSpeak now :-)
Right. And you can stay inside your own firewall.
or you can have your local install, if you want :)
a created a GIST a while ago with all the details :)
gist.github.com/fragolinux/a09a5ab762f6c2c44f603ac263de9639
Thanks for the tip about ThingsSpeak, I'll have a go with that once I have got the Raspberry Pi working with the image that Andreas has made for us.
Andreas, once again fantastic work and thanks for sharing...
You are welcome!
Great video, just a question where did you get the pi zero from?
Pimoroni, I think
Thanks Andreas , I think SD card image needs to be updates , dietpi update services says "Your version of DietPi is now obsolete and cannot be updated ".
This is well possible. I cannot maintain all images for all my videos. But with Peter's script, you should be able to create your own image based on the newest dietpi.
Hi Andreas Spiess !
first I thank you for your great job
why you can't make a video about mqtt and lorawan (iot) ?
+MESBAH Youssef I think, I covered the connection to Lorawan in one of my videos (to node-red). It is very easy.
Hi, Is anyone else having problems installing new nodes into node-red with either package manager or from the palette? I'm sure this was working on a previous version of the disc image a few weeks ago. Have flashed a newer image that is now hosted on Sensors.iot and I cant add any new nodes???
Having the same issue here - It seems like Node-Red cannot access the internet.
I tried to setup a Ping in Note-Red for "registry.npmjs.org" and "google.com" without luck.
Then I tried from the Webmin and Putty directly from Dietpi, and still no luck...
Somehow the Dietpi seems to be disconnected from the internet which is strange - I'll see if I can work more on it, but would also like to hear if others are having the same issue.
Great help as usual. Except I do not find your GitHub image for the SD card. Do you have a link please.
I had problems to upload it to github. So, I had to change to google drive. It should be there now.
+squalazzo
Care to explain the tweaks for CHIP.I checked Scargill's new article and this video is listed there already !
Thanks for your service to the hobbyist community. I have an issue with your image file installation i.e., when I add these lines,
editorTheme: {
projects: {
enabled: true
}
}
in settings.js file I can add Projects option in the Menu of regular Node-red.
But it is not working in Node-red of your image file installation. Please advice me, how do I get the "Project option" in Node-red Menu if I use your image file. Thank you again.
I have no idea. So I cannot help :-(
The node libraries which Peter Scargill installed with his script made me curious, so I run it on a Rpi 1B last night. The script ran insanly slow on that hardware, but surprisingly the Node-RED server is running better than I expected. It takes of course longer than on RPi 3 to initialize the web frontend, but once it is down, the performance is enough to create flows and deploy them. I did not figure out why, but with the testinstallation done via Peter Scargill's script I was unable to add further node libraries. I think something went wrong with the npm setup.
Usually, somebody answers your questions if you ask on Peter's blog.
Good to know, thank you. At the moment I'm thinking that the DietPi installer in the current version already brings everything with it what I need for my project. I just installed Peter's script to check it out. If I decide to keep on testing with that RPi 1 image, I will start debugging the npm installation, maybe it's an access rights or version conflict.
I've used etcher program to download the Raspberry pi to a SD card. It takes the zip file and unpacks it without having to use any Linux commands. It seems
quicker.
That is the normal way AFAIK.
It would be a good practice to add SHA1SUM of the image (or any other binary files) next to their download link.
I am not too good in these matters...
Ill have to get me a Raspberry pi zero as you make it so easy by providing the SD card image. While i wait for the zero to ship ill mess about with with Scargils script on my orange pi.. thanks
My Orange zero is also in the mail...
is anyone else experiencing complications when running homebridge on the same pi as node-red? only either one will work for me, not both at the same time. maybe complications with node-js?
Just be careful with sqlite. Only one process should be writing to it at a time or you can get corruption. In this situation I doubt it will happen but it's just something to look out for. If you have the option you might switch over to MySQL as it's faster and doesn't have the issue of only being available to one process at a time. Thanks for doing what you do and keep up the great work!
I used mySQL on bigger machines, but thought, this is sufficient because the Zero is really slow... Thanks for the hint about concurrency. I did not know this limitation.
Thanks for your video! Would your image also run on a Pi1? I still have a lot of them around and barely use them.
Maybe you try? Otherwise, you have to install dietpi and apply the script.
we adapted the script to run on PI1, too...
:-)
Hi Andreas
Another great video and also many thanks to Mr. Scargill !
I did everything per instruction but can't install anything as I realized there is no disk space. So I followed the instructions for expanding the SD partition but with no luck. I downloaded the newly instruction from your GDrive but they don't work for me for the following reasons:
1) using the easy instructions, I can't do this as I am unable to add login into any desktop as I can't install anything due to limited disk space
2) using the "hard method", I can't sudo umount as I get an error "target is busy" error
any help is greatly appreciated...
Many thanks in advance,
MG
1. The simple possibility works on a Raspberry 2 or 3, not on the Zero. So, no need to install anything.
2. With both methods, you have to have an SD card reader and put your DietPi/broker SD card there (as a second and unmounted device)
thanks , you are one in 1,000,000
You are welcome!
I finally made it running. One final question, i want to copy your function sabing mqtt to sd card. Is it possible to make the code available? The code you posted is a diffrent one.
Thank you for your great tutorials
I will cover this part in some detail in my video next Sunday.
Hi andreas...I'm a big fan of your work....does you SD card image for the raspberry pi zero works for the raspberry pi 1 ( I've read that is basically the same processor but I don't Kwon if the SD card image is compatible)...
I do not know. But I think, you cannot destroy a lot if you try...
Just got the info, that they adapted the script that it runs also no RPI1. So, if not the image, at least the script.
Hi Andreas, can you please tell me where I can find the image for this, sorry but I have only statred using node red in the last two days, have already spent many hours on the journey, thanks for your fantastic video classes !
Maybe you watch the newer videos about the topic. There you should find better images.
@@AndreasSpiess wow I that was a quick reply, I'll see if l can find the videos, thanks
A bit late for the party, but:
Thanks for the excellent tutorial.
I've got it set up and appears to be working OK, but how do I use it to do something useful eg:
I've got a light that I've 'tasmotised' and can control using the Node Red in Home Assistant. How do I (say) turn it on using this set up? I've tried injecting 'on' with the topic of the bulb (Lohas_Bulb2) and subscribed to the same topic, but nothing happens. Maybe it's a lot more involved than this!
I'd be grateful for some help, please.
Jim
You have to use the right topic as well as the right command. Otherwise you will not see any reaction. I did other videos about Node-Red and similar stuff.
I use Raspbian Lite in a similar matter and I found out that the HDMI output is switched on, even if there is no screen attached. Switching this off saves power and reduces the CPU temp, I read somewhere that it can reduce 20% power.
To switch off the HDMI output type "/usr/bin/tvservice -o" and add this line to "/etc/rc.local" at the end, before "exit 0".
I don't now how this is set up in DietPi.
Thanks for the tip!
I found out that switching the HDMI port off reduces my CPU temperature (at room temperature) from about 31.5 to 29.5 deg C. I don't know ho to relate this to power use, but it must be a relevant amount.
Hi Mr Andreas! Would you mind to enabling the link to download the Raspberry pi zero w? Thanks!
Weeeee! Pi with wifi ... Zero calories :)
:-))
Andreas, I'm not having good luck with getting mosquitto to work properly. I built it using your image, configured wifi, but when I try "mosquitto_sub -v -t '#'" I get the error "Connection refused: not authorised" or I use MQTT.fx and I get "Not authorized to connect". I've tried it using both accounts. Node-RED also won't connect. What am I doing wrong? Thanks, I love your channel!
If you do not use passwords, you have to change the config of mosquitto:
$ cd /etc/mosquitto/conf.d/$ sudo nano mosquitto.confand replace allow_anonymous false with allow_anonymous true
Great eye-opener Andreas, thank you. To put this into context for myself, what you are saying is that you could set up your IoT home with as many wifi enabled devices as you like, and, as long as they can talk MQTT, for $20 and the price of a wifi adapter you can have this device log every possible event. It is stand-alone. It does not have any effect on how any given device behaves or reacts with its immediate controller, eg smartphone.
Have I properly understood the context? is there another benefit? Cheers.
What more benefits you expect for 20$? ;-)
Just wanted to check that I had understood the reason for the setup. Thanks for the reply, keep up the videos, well made, very clear, very easy to understand.
:-) And sorry, I answered only one part of your question.
Re: Video #126
Years ago I'd dl's and used the sdcard image you'd made from peter scargills christmas
script. Thank you. I used the web interface with node-red and mosquitto to monitor and
control a basement sump system. Hardware was a pi zero w and an ESP8266 with several
sensors.
Now, while starting with the same sdcard image for a different but similar project, I
find the Diet-Pi version used is too old to upgrade and there were a few nodes I
needed that wouldn't install without the upgrades.
My Node-Red interface used live gauges, historical graphs, buttons and switches... All
viewed on my browser. While looking at the script contents I'm guessing I don't need
all of the many included programs. To save space, given the limited info I've
provided, can you suggest which packages I will likely need for this project?
The project is to monitor and display live and historical data of current flow through
individual breakers in my house. My recent electric bills have gotten my attention.
This seems to be a good place to start. Thank you for all you do.
redisette
Maybe you watch my videos about IOTstack?
Loaded your image fine. Great work. I am stuck getting into Node Red Control Panel from PETE'S UTILITIES. I have run out of ideas for the Username/Password.
it should be "admin/admin and the dashboard user/user
Thanks
How did I miss that!! Had got past the dashboard.
:-)
I added more nodes to node-red too. Peter's script is very good. when I used it the script was broken so I had to manually add so on tge npm files. Thanks for adding the sqlite stuff as I have not done that yet. Check out the weather node. By the way you missed the dashboard nodes. You show them but did not explain how to add the buttons Andreas. Great video as always mate. Still working on the turbine project. Also can you point me to the java script file please.
Concerning Dashboard: I have to have stuff for another video ;-)
The Java script is based on the node-red example (file in the description). And it is in the image file...
Andreas Spiess I have a image file already mate. Did it last year. Check out the
NPM site. Lots of good stuff. By the way just purchased a 3D printer. CR10. Great price from bestgear. Promo code 3DCR10.
Enjoy your new printer. It was a "game changer" for me when I got mine