Raspberry Pi with Node-RED Tutorial #2 – Make a user interface

Install additional Nodes and make a user interface with Node-RED.
Sensor date comes from the Raspberry Pi Sense HAT. (Temperature, Barometric pressure, Humidity)

[aurelioroccasanta]

Is there a way to show the dashboard out of the browser or at least Hide the bar so that It Is more clean to see?

[mandeepmails]

I’m grateful to see such an elaboration. Hats off to your knowledge and presentation skill. Undoubtedly I’m newbie into this, and exploring all I can, may be you could point me to the right place, if there’s a guide to get expertise over nodered. I’m still unable to correlate some basic stuff sometimes...my first project I’ve decided is to have complete dashboard for my room lighting controls. I’ve already bought one Nodemcu.v9 and got raspberry pi able to use gpio pins. But not over wireless advise me. Thanks in advance.

[PrashantGijare]

Thank you so much for this video. I was able to do everything on my mac even without an actual Sensehat. I used Sensehat simulator nodes and added or subtracted random number to different variables to make it change it randomly. I also added a 5 second delay so that it doesn't dance too much. Overall it was very easy to follow your video even though there is no audio from you.

[doug]

This is a
great video, thank you. I've been able to do a lot with what you've explained.

Could you
explain more about variables and payloads. I have looked around and can't seem
to find any information about them.

I was trying
to use what you had shown in the function node, to get the data from the
accelerometer. And use it on the LED grid output.

I understand
that the message delivers the payload and the payload has the variable in it.
But with temperature humidity and pressure there is only one variable, but with
the accelerometer gyroscope and orientation there are three variables and I
can't figure out how to take them out and use them on their own. Likewise it
would be good to know how to put three variables together like in the case of
the LED output grid. Any help on this would be much appreciated. Thank you.

[thedefeatedengineer]

Addition of Voice would be really helpful.

[mitkosokolov]

In my case there is no changes in the values (shows same values all the time). Any help?

[ΒασιληςΤογης]

Hi, how can iget data of an atlas scientific temperature sensor RTD in node red and raspberry pi 4?

[gayanthavlogs]

Hi can we use this with MQTT protocol?

[mataxarh]

hello! I’m a beginner in programming so please excuse me for my ignorance:i need your precious help on a project. I have a beaglobone black which is supposed to get measurments from an amplifier and then save them in a new matrix( 2 columns of frequency f and time t ).I need the measurments imported into node red and then shown on a chart of frequency and time axes.could you help me? thanx a lot!

[blakegriffin]

Pi4loT I did everything in the video but I still don't have a Manage Palette tab on Node Red .14.6 Everything installed like in your video. I even rebooted the Pi. Any suggestions?

[HemangJoshi]

I have added nodes :
node-red-contrib-i2c
node-red-ads1x15
but it is not showing up in the pallet. Please help

[siddharthachatterjee]

Hi,
Nice video, thanks ! I have two questions :

1. How to run node-red in the background ?
I tried "node-red &". It runs in the background but repeatedly surfaces in the foreground.

2. How do we start node-red automatically in the background as the pi boots up ?
So, we do not have to ssh every time and type in "node-red".
I tried adding "node-red &" in /etc/rc.local. This does not work i.e. it does not even start node-red.

Please let know.

[jessiet]

Wow, very nice. Thank you for sharing. Could you also make a video on how to send running text message to the LED matrix and RGB function with slide as control.

[aekanshgupta]

Woah! how is ur rasberry pi sensing temperature and humidity without any sensor?

[adumont]

learned a trick recently, instead of a function node where you extract the temperature, you can simply use a template node, with this content: {{temperature}} :)

[davidc]

Is node red running on its own on the pi with out communicating to external internet like a host program

[mitkosokolov]

My env. values are all the same. How to make them change ? Sensehat simulator

[alexsalgado]

Hi, do you know if this examples works for dragonboard410 da Qualcomm ?

[alexandrovm]

hello. I get the following message when trying to use Sense HAT: "pi : TTY=unknown ; PWD=/home/pi ; USER=root ; COMMAND=/usr/bin/python -u
pam_unix(sudo:session): session opened for user root by (uid=0)
pam_unix(sudo:session): session closed for user root
11 Oct 20:10:35 - [info] Stopping flows
11 Oct 20:10:35 - [info] Stopped flows
11 Oct 20:10:35 - [info] Starting flows
11 Oct 20:10:35 - [info] Started flows
pi : TTY=unknown ; PWD=/home/pi ; USER=root ; COMMAND=/usr/bin/python -u
pam_unix(sudo:session): session opened for user root by (uid=0)
pam_unix(sudo:session): session closed for user root"

It repeats and stay that way. I previously followed your advices in this page and in the video. Please help me. Thanks...

[mrbulp]

hi, i have magnetic hall sensor & i want to make it a speedometer.. i got python script for it.. but i dont know how to import those script to node-red..

the gauges will display realtime RPM or even KM/H..