You can find on my blog the full step-by-step instructions for each ESP board. ESP32 Project (schematics + source code) ► RandomNerdTutorials.com/esp32-relay-module-ac-web-server/ ESP8266 Project (schematics + source code) ► RandomNerdTutorials.com/esp8266-relay-module-ac-web-server/

This is the third project I'm trying. Yours was the only one who works. Thank you a lot my friend, hugs from Brazil

Thank you so much for sharing this wonderful video!It means alot to show and educate people who are trying to do gadgets like these.

Clear and concise. Great video. Thanks.

Congratulations Rui!! Great solution, thanks so much.

Your video is always so clear and also your website .all the necessary things are present in website Keep posting ...

Thank you my friend by your project ,Im come from Vietnam.

Congratulation Rui!! Great solution. Thanks so much.

Hey great video! I got a question, do I have to find a 3.3v relay for using in with my ESP32? or what is the model youre using in this video? Thanks, I apreciate your work!

Hi Rui, Thank you for this fantastic video. Is there a limit to the number of Channels which can be controlled using a single 8266 NodeMCU component?

Thank you. This was very useful!

This is great... you are great... where the hell was this video 8 months ago when I needed you? lol. Good work!

Thank you😃, i was wondering why it doesn't work, then i realize the jumper caps were removed!

Wow now that is really awesome and clean code! Thank you so much:)

simple and usefully video.thanks.

Thank you for the video sir.

Great tutorial dear

Thank you. Helpful as always.

I followed your tutorial and built a similar project Thank You it was a fun build! is there a way to name the relays independently in the web server? I have them performing specific functions and I'd rather them have a name other than Relay #1 - GPIO 16 etc... I'd really appreciate your help

really good stuff keep it up

Great job if I wanted to only be able to have one really on at a time example if I have four relays and I turn on number one then I turn on number two in the code how would I have it so when you switch relays it auto shuts off pervious one

Very nice video. It worked perfectly when I repeated it. Could do you please improve it by making it accessible from anywhere over the internet? thx

Thanks for your video dude. I have a question? If I need a relay that can handle a 48VDC out with 6A. Can i connect to 2 relay that give 30VDC and 10A each to control only this 1 equipment?

Olá Rui. Parabéns pelo video e pelo canal. Gostava de saber se é possivel fazer o seguinte: ter o som ambiente por zonas com botão no Home assistant... será que é possível com esp 8266 ou wemos Com relé E adicionar o sistema ao HA com botões? Tipo - ligo o sistema de som e as colunas estão todas ligadas - se ligar o botão 1 toca na sala - se ligar o botão 2 toca no WC se ligar os 2 tocam em ambos os espaços. Obrigado

Hi, great project! I need to use all 8 channels with ESP8266 could you tell me which pins to connect the remaining 3 channels to? Thank you.

This is great! thank you

Hi Rui, The tutorial is nice. i have tried using the information provided in your tutorial. Able to control the relays only when my ESP8266 and Laptop (where i am opening the web page to control the relays) are connected to same network. If both are connected to same Wifi network, the ip address is not opening. What might be the issue? Do you have any inputs?

Thanx this was helpful

A good work. Really i like

Took me 10 mins ... Thx

Hi good video, could you tell me how did you do the app to your celphone, thanks a lot

nice presentation! thank you

Отличный проект. Можно ли добавить простой таймер, например после движения ползунком влючается реле, а через 5 сек. отключается и ползунок возвращается в состояние выкл.

Very nice , let´s say as is 5 relay, each controled by each button now how to add a button to turn off/on all at the same time,the idea is that leaving house and turn OFF all ligths or getting home turn on ligths ON, is it possible ?

nice video.. but anyway i have a little question about how to change the credentials without hard coding again.. thanks in advance..

Good explanation

Good day Mr Santos, thank you for your videos, Ive learned a lot from all of them. I was wondering if you could help me regarding relays... So I have a simple webserver where I can turn a relay on/off and I have three LDR sensors as inputs for the three status LED of the water pump I want to control. Ive used the meta-refresh to refresh my web server every 30s, BUT once the server refreshes, my relay quickly turn off and back on again during the reset. Is this one of issues related with using meta-refresh or does this sound like bad coding? EDIT: I fixed it within an hour of typing this message, Ive connected the relay to GPIO2 but I was so focused on my coding and other stuff that Ive failed to remember that the buildin LED is also controlled from GPIO2. Luckily this is an easy fix. Ive used the buildin LED to give me wifi status updates as well as data coming from the client, that is why my relay went mad. Ill leave this comment to help others.

Hi, Followed your video and it works. The problem I encounter is that when I open my motor, I need to close it before I can open other device. I believe they should work simultaenously. Whats wrong with my circuit?

Vou testar isso assim que tiver tempo. Serias capaz de me tirar umas dúvidas?

fantastic!!

Good video

Hello. do you have any idea how it can work with xlights with an esp32 16 channel relay?

I have an esp and i want to monitor the lights of an electromechanical pump's control box. The lights are 24v ac i need to read their status on or off with the esp is it possible to read the relays status with this module?

Thank u....Rui...

Hi Rui, Greetings from Brazil! I have two questions: 1) I have a Module with 8x Relays, but it works with 12V, so how should I connect it to ESP32/ESP8266? I know I must use External Power, but how do I make the connections? 2) And that JDVcc jumper I don't understand what it's for. Thanks

Hello!! What if i want when i sent the command to close the relay, it will close in one or 2 sec it self? Thanks!!

Could I use the same project to control more than one home light bulb? Or I need to buy 8 channel relay module to control all the ceiling light bulbs in my room? "I mean the main voltage home light bulbs not the external light bulbs". Thank you.

Is internet connection or wi fi compulsory with this module can I use this module for switch on off with mobile directly

I see this tutorial only control 5 chanel ? Can this device use 8 chanel ?

hi, may i know what database u are using for this project?

hi i like your video , but i have question that, i am using esp 32 for my rgb lights {wled} and i also want that esp board to turn off things that i link in this video, so plzz tell me can i makeor run 2 commands always on a single esp board u can also make video on that

una pregunta, estoy estoy trabajando en un proyecto para automatizar el reguio de un cultivo por bonbas de agua, el control de la automatización se hara mediante una aplicacion wed, tengo un modulo esp8266 y un rele de dos canales, la pregunta es a pesar que el rele dice que solo soporta 10-15A Y 125 VAC - 250VAC, no hay problema si lo utilizo para una bomba de agua de 110 vcc?

Good video, i have a problem my relé module needs 5v and the esp8266 just send 3.3v and it doesn't work please help, thanks a lot

Hello. Can I control 24V relay with 3.3V(12mA) output GPIO? So using ohms law i need 2k ohms to get 24V. Will this work?

Hello and thanks for this beautiful video. Can you tell me how to connect to this Esp32 from WEB and not only from same network??

Hello! if I want to supplement it with a LoRa module due to the longer range, what should i do?

how to acces the node mcu from external network...do we have to perform things like port forwarding to acces the same throuh the internet

Hi Rui, is there a way to do the same using softAP.

Olá ! Amigo Seus videos são bons Faca em português , que vc vai ter muitos seguidores no aqui no Brasil ATt

Hi Rui don't you want to make weather station based on your ESP-32 weather shield with another wirelessly connected another shield that one will be inside and one outside that will be shown on display and on internet and maybe solar powered i think that would be awesome sorry for my poor english keep what are you doing and happy holidays!

Hi, I need to make an I2C communication between an Esp 32 and Esp8266, where can I find info about?

Excellent

@rui Santos : can you help me with code in your Relay code, to have the Internal LED of ESP8266 Blinking while the WIFI is being Connected, and stays ON once connected to wifi, Unable to be sure if it was connected or not if not connected to computer.

Hi Rui, I though you need 5v to move the coil of the relay, are the 3v of a nodemcu enough to control relay? Or do you use an extra power source to make it work?

Hi Rui, Just came across this video, i must say very well done, nice clean code and awesome explanation !! i do have a question though, i would like to name the relays, i don't want to see the "Relay#1 - GPIO 14" text, can you please update the esp8266 sketch?

hi sir is it a local server only? thanks in advance

This project based on local area network or global ?

Hay we are using it by Wifi, but can we use it by Manually + Bluetooth enabled........if Yes, then what will be the circuit diagram and codes?

Exelente.obrigado pour partilhar.Bom ano!

Hi ! First of all thank you very much for all your tutorial and content ! Thanks a lot !! I have a question: I'm starting to program an ESP32, and what I want to do is to use data that I wan’t to input through an internal html site, exactly as you do in one of your tutorials using the ESPAsyncWebServer Library, and at the same time I need to be able to auto connect the device without hardcoding the Password and Name of the net, so I can do it more “plug and play” Where should I start studying? Is there a way of combining both libraries, or some of those features are also possible to make in both libraries? Thanks a lot !!

Thanks for the video. I see use 2 skits for ESP8266 and ESP32. Couldn't you combine both sketches and just use the sketch for both ESP (8266 and 32)? You would then only have one sketch, which then works for both ESPs.

I have a hosted domain. How do I make this project controlled over WiFi not with a local network

Hi Can you please create version of this script that allows to control relays based on Temp & Humidity??

rui, how to post data without refreshing the page?

Hi how to name each gpio? as Relay #4 renamed to garage?

How reverse the output, Relay 16 channel have positif input.

Is this can be controlled from anywhere in the world

Do you need an ip pubblic? Thanks

Can we Controll led output of 1 volt

Hi Rui, ESPAsyncWebServer is not available... What can I do? Could it be that it does not exist anymore?

Is this tutorial for RELAY with active LOW? Mine is active low. Can you also explain the code? the lines with code: request->send_P(200, "text/html", index_html, processor); The function: String processor(const String& var) { .....} I thought you have to pass argument into processor function on "request->send...."

Can I control 1 phase AC motor

Sir i need, auto on relay when connected to wifi can u help me? M a beginner

you are genios

Good Day Sir!, In my current project I am combining your codes for the dht22 and relay. I encountered a problem and it says "relayState is not declared in this scope"...can I ask sir why is that?

Is there anyway to control it through internet is????? Plzzzz

when connecting my 4 channel module to the gnd and 5V pins of my esp32wroom32u wifi disconnects and can't access webpage (I made my own) What could be the issue? the module is taking too much energy?

when i run the code i don't get any error but nothing shows up on the serial port i pressed the rst button why?

I use this relay module but the relay won't change even thou the led change with 3.3v from nodemcu

how to make if turn off relay 1 turn on relay 2?

Hi. Can we access to esp8266 from anywhere ? Thanks.

What if I want to control the relays using blynk?

Hello! i have a question. if you close the webpage, and you open it again, does it still show the relay state? if the device is on or of?

How can I add a name to each relay

i know it is long time this video was relased but i tried it and is wdt reseting can somebodz help me????

Compiling error for ESP8266, Wemos D1 R1 mini, Thank you

and webserver with espalexa?

You are doing an amazing job, love you and your website randomnerdtutorials.com

Is the relay module 3.3v or 5 v

But what about esp 01??