Видео

This is awful technical. I just need the relay to switch from a solid state switch to fire a motor

I have been looking for exactly this! Thanks for making this.

Very well explained. Thank you for posting this video.

I believe your "Relay Two" schematic is wrong. The optocoupler is open-collector and the way you have drawn it you are shorting the 5V to ground when optocoupler transistor turns on.

This is a great video...question...is there another way to set the relay from input low to input high?, the option you mentioned would only work with a single relay board, i'm using a dual relay board. already try to set the output GIO pin to high but it did not work... thank you

It works when I did with external supply , helps a Lot

I hate active low modules 😂

Good 👍

helped a lot with my project thanks

Amazing explanation, after viewing, rushed to watch for more of the similar explanations and... daamn

This is a high-quality educational video. It is unique in the sense that it describes the physics inside the relays. In addition, it shows three different ways of connecting the relay module at 3:31, 5:10 and 5:52. Thank you very much for the video.

Very good explanation

I have the red relay. I'm trying to figure out how to get it to replace the trigger on my plasma torch for CNC use. I have the MKS DLC 32 control board. The instructions suggest I use the spindle output as the trigger source. The debt connection is 24 volts since it outputs whatever the power supply is. I just want to use that 24 volt spindle connection to trigger the relay which will finalize the wire connection to the plasma machine. Can you tell me how to do it in terms that a caveman could understand? Thanks. There's two wires that travel from the plasma machine to the trigger on the torch handle. Squeezing the trigger simply closest the connection. That's all I'm trying to do.

thank you, great explanation of various module type and it circuit schematic

Thank you for the excellent and clear explanation. Regarding relay module two, would it be possible to isolate relay and signal power by discarding the jumper and applying DC+ to the DC+ terminal for the relay coil (or the LOW pin of the 3 pin jumper) and signal power to the middle pin of the three pin jumper (either DC- or DC+ depending on whether we want to trigger high or low). Edit: I tried it and it works!

nice

nice.. do you have circuit diagram of this?

I have a dso with a frequency of 100 MHz, and I use Thonny IDE and Micro Python with a Rp2040 system clock of 125 MHz. I also know the pwm frequency, which is 62.5 MHz. I have to make a pwm in an RP2040 at 50 MHz, thus here's my code: from machine import Pin, PWM import time pwm_pin = 0 pwm = PWM(pwm_pin) pwm.freq(1000000) # Set PWM frequency in Hz # Set fixed duty cycle pwm.duty_u16(32768) # 50% duty cycle (32768 out of 65535) I want a square wave, however the PWM produced noises and ripples with this code. Thus, how can I lessen the noise and ripples? help me sir

Really helped out a lot with the internal pullup, forgot to wire it in and boom! saved by the code

Thanks for your video. Excellent explanation.

Nicely done... Thanks.... What is the highest freq Pico can go... ? And how do u provide a delay in bw two PWM signals

Cách ly mà dùng chung mass ?

im still confuse..idk which is the problem..if it is, the code, the connection, the relay...its like the permutation on my situation, figuring different combination of trials..im giving up

either NPN or PNP will work for me switching RF signal inputs and outputs

Insta Subscribed

This is the best explanation of relays that I have ever encountered for so long. Thank you so much sir for this.

This was a really clear video, well-explained. In particular, I was interested in understanding what JD-Vcc was doing and why the jumper is there/not there. Thank you.

Thank you for the video Brad! I'm wondering if I can use a single power supply to power both the relay coils (JD-VCC jumper removed) but also the arduino. I guess technically the arduino wouldn't be completely isolated from the coils BUT at least the coils would be getting their power straight from the power supply instead of possibly overloading the VCC pin on the arduino right? I'd also like to know if I could possibly go a step further and use that same power supply to also provide the power on the relays themselves (only intending on turning on 5mm LED's) so basically I'm trying to use a single power supply to power the arduino, the relay coils, and the LED's connected to the relays. Starting to think maybe I could've just gone with a different module like something using mosfets? Still kind of a beginner so any suggestions are welcome! Thanks for your time!

Hi, please, can you get a 5VDC output? i want to use this as a safety relay so i want 5VDC in, 5VDC out

I've been trying to find a good explanation of how to wire these relays, the 3 pins on the load side confused me, but you cleared it up really nicely. Thanks!

After I destroy 2 esp32 boards, luckily I found this to let me not third boards. It may draw to much current by coil to wreck them before I test any project.

Thank you for this video! Every other video I've found has only explained how to plug in a couple wires. You actually explained how things work and why they're set up in a certain way, which is exactly what I needed. Thank you!

All my comments based on Relay Module One. Tks.

good

Thanks for knowgable video sharing.

Superb. Thank you!

Thanks for the video, very informative. I would have liked to see the optocoupler based relay driver schematic with component names and values so that I could have tried making my own in a custom PCB.

Dude, I was totally confused about these relay modules. I wish I had seen this before I bought some. Anyway, thank you. [Click -> Subscribed 😀]

Nice video, thanks :)

cant i connect an external power supply to the dc+ pin in relay module 2? or external power supply to dc- and dc+ for that matter?

Refreshing to see a clear video on the subject. One thing to note and I wished more presenters did was talk to their audience like we are just home DIY's not knowing schematics and just visually seeing how to wire everything together. I've never used a breadboard so wouldn't even know where to plug something into it. We just want the pertinent info and move onto another subject.

Excellent video, and you solved my issue at 5:45, thanks a lot.

Thank you Brad, that was a very well explained demonstration

I've got a small digital relay that I can't get to work on 5 volts. It takes a trigger larger than 5 volts to cause it to go high. I've currently got a 12 volt battey pack triggering it. So I've got the 12 volt battery pack acting as my mains current going to an LED. 5 volts coming into the relay side. And a line from a switch to the 12 volt on the trigger. When I hit the push button 12 volts goes to the trigger and triggers the relay allowing 12 volts to go to the LED. The relay is supposed to handle mains current but I doubt that I want to use mains current to trigger it.

Super video. Great clarity

this video is insane, thank you

Great demonstration and so helpful thank the video.

2:00 Can you really be sure those 3mm -wide traces can carry more current that the 1-1/2 mm wide ones? Can you know the thickness of the copper somehow? Excellent video, btw.

Really u r great

thanks for the video, now i know what the JD-VCC is used for i was going to use this relay for turning on a second PSU for computer as before i just use a relay and diode drive 12v dc from the main PSU and been working ok for years i just like to add a bit more protection