Raspberry Pi 4 - Introduction to Node-RED | Easy Tutorial

[@teguhgumilar6868]

Great, keep making simple and understandable videos. Dont forget to put the photos of schematic at beginning or end, it will help me as beginner

[@JoseReyes-hg9qp]

Excellent video friend.. I need your help. I am currently doing a practice of using Node red on the RASPBERRY PI, the problem in question is that I need that if the power is lost and returns, the RASPBERRY pi automatically executes the flow or program that I have in Node red... Thanks in advance for your help... Greetings

[@warrenscorner]

Excellent tutorial young man! Please do more Node-RED.

[@TheJuniorCoder]

Thanks, will do!

[@majorroli]

Nicely done!! Not too much, but just explaining the important stuff! Keep it up 🆙

[@derekhypes7520]

Great video, very clear explanation. Love to see more on Nodered, thanks

[@TheJuniorCoder]

Glad it was helpful!

[@DRI1966]

Thank you for this video. Really well done and easy to follow. Best Regards, Didier

[@TheJuniorCoder]

You are welcome!

[@kychemclass5850]

Great stuff. Thanks for the quick and simple intro. I've not done any Node Red work yet. I didn't see any compiling - you were just in live "test" mode, yes? How do you 'burn' the program onto the Pi so that on boot-up the Pi executes the Node Red software/circuit design?

[@TheJuniorCoder]

I don't have an answer for that right now, but if I upload more Node Red videos, I will be sure to go over that!

[@DRONETREADONME]

Perfect intro to the app!

[@TheJuniorCoder]

Thanks!

[@sidnajedou910]

Thank you, best video

[@TheJuniorCoder]

Thanks!

[@vamsibalijepally3431]

Please do more videos on node red

[@TheJuniorCoder]

I will try my best to upload more on node-red. Remember if its helpful, don't forget to share it ✔️

[@hasithasudasinghe7207]

Sure I have subscribed to your channel. Please transfer string btween 2 rpies using LAN

[@SuperHaunts]

Bad design to use a resistor to ground. Ground should always be ground, and resistance to load (or positive).

[@TheJuniorCoder]

Thanks for the great tip!

[@jerrellmahan4814]

The configuration works fine, why do you think it's a bad design?

[@SuperHaunts]

@@jerrellmahan4814 Ground NEEDS to be ground! In a simple design, you can *GET AWAY* with it, but when it gets more complex, and you have ground loops, etc., it can be IMPOSSIBLE to troubleshoot. Especially when you have multiple power sources. Even the PI has both 3V and 5V supplies. If you happen to need to beef up the power for one due to amperage requirements or other things, gee, where do I reference??? BAD DESIGN PRACTICE!!

[@jerrellmahan4814]

@@SuperHaunts Your original comment states "Bad design to use a resistor to ground." You did not provide any reason for that statement. "Ground should always be ground, and resistance to load (or positive)." In his circuit, GROUND is GROUND. The young man in the video connected a black wire from pin 6 (GROUND) to one lead of the resistor, the other lead of the resistor is connected to the cathode of the LED, and the anode of the LED is connected with a red wire to the output GPIO pin, which provides the positive supply terminal. The positions of the two components can be swapped as long as the cathode has a path to GROUND and the anode has a path to the positive terminal. "In a simple design, you can GET AWAY with it" He's NOT trying to GET AWAY with anything, he has not violated any electrical rules.

[@SuperHaunts]

I did post the reason, please follow the replies. You don't see resistors to ground in any high voltage application, nor should you in anything that has the potential to have multiple power supplies. You need to reference absolute ground, and you can't do that in something that is not truly grounded. Even cars use ground as ground.