Home Automation System using multiple NodeMCU ESP8266 network with Blynk | IoT Projects 2021

[@TechStudyCell]

** (Important) Please don't connect both NodeMCUs with the laptop at the same time. And also use different 5V power supply for each NodeMCU. Otherwise, false turn on and off may take place. Thank you.

[@shahabakhtar6659]

Which model we use nodemcu esp8266...................?

[@duncanx99]

That's remote control - it's not Home Automation...

[@vovanhoangkimpro5822]

your program is faulty, if you press and hold the relay button, it will jump continuously

[@TechStudyCell]

I have used NodeMCU 1.0. please visit the purchase link from description

[@arkamondal13]

Program is faulty. Only relay 2 toggles .rest are correct.

[@smskundu1]

MANUAL SWITCHES IS NOT WORKING PROPERLY, RELAYS ARE SWITCHING ON & OFF CONTINUOUSLY FOR SWITCH 2, 3 & 4, SWITCH 1 COULD NOT OPERATE RELAY 1. ALSO RELAYS ARE GETTING STUCK SOMETIMES AFTER SWITCHING OFF. WIFI LED IS ALSO NOT GLOWING THOUGH CONNECTED TO WIFI AND OPERATIVE THROUGH BLYNK APPLICATION (BOTH WEB AND ANDROID APPLICATION). PLEASE HELP TO RESOLVE THE ISSUE. I AM USING Node MCU ESP8266 V3 (LOLIN CH340 chip).

[@HRTechnologyProR]

*_Can i use this project using regular home switch to Manual control?_*

[@TechStudyCell]

For that you have to modify the code and use Acebutton library. will make a video on it soon.

[@HRTechnologyProR]

*_@Tech StudyCell OK THANK YOU SO MUCH ❣️Please make a video on it❣️_*

[@agrabadchittagong4629]

Dear Sir, Good Evening , Hope you good well.... I try to made it after learning/viewing from this tutorial.... by using (1) Arduino IDE 2.2.1, (2) Blynk Library version 0.6.1, (3) Nodemcu ESP8266 (ESP-12E Module)... But After completing this project I faced a problem.....that is my device shown 'Offline' status. For this issue I failure to operate/active this project. I also enclosed a screenshot of my device dashboard to your facebook messanger. Kindly help me to fix the problem... Thanks

[@bbdas52]

Thank you very much for the excellent videos. Can you please tell me can it work world wide?

[@anandhurajeev4046]

Sir, pls uploade a vedio of home automation, it consists 16 Chanel relay, each realay control manually + IR+ BLINK

[@AneeshJonwal]

Doesn't work now. I spent one month trying. Blynk code keeps getting updated and code provided in this video doesn't work anymore.

[@ishdemon_]

Blynk sucks since it uses Http/https which is very heavy protocol and not suitable for iot. Instead use Mqtt protocol. I think blynk should move to mqtt.

[@mrsachink70]

if i have 10 appliances in a room can i use 1 esp 8266 for 10 relay module ?

[@hk0954]

Kindly make the same video by using esp32 and rainmaker app

[@Zack_pak]

how can i make an 5v cruunt??? can i use an data cable or charger for nodemcu to give 5v cruent kindly make an video on it how to give 5v crunt to nodemcu at home using cheap product

[@BlessyJoy-er5ew]

How to make energy management system for home automation using wireless sensors and actuators

[@rameshniroj2225]

CAN CONTROL 8 RELAY MODULE IN NODEMCU ESP8266 ??????.?

[@saiots8651]

Bro pleas make a video on this automation with multiple node mcu in which we can use traditional switches like in our room switch boards to on/off the load instead of using push buttons Thanks bro in advance

[@TechStudyCell]

Okay. Will make video on this

[@Retro_1]

I am unable to access the Gerber file how can i open it?

[@JitenderKumar-pz1hq]

Bhai mere esp 8266 project ki setting nhi ho rahi h kya tum meri help kar sakte ho please

[@iyyappaniyyappan2565]

Bro many km we can control the bulb 💡💡

[@Angel_ways_1122]

can i use touch button in push button

[@matthiash.454]

You have 220 volts AC____bulbs connected to the output of the relay I want to connect WS2812B___ 5 volts DC is this possible ?

[@asadmirajofficial6206]

How to connect 2 or 3 mobiles with a single nodeMcu. Because in 2 or more mobiles blynk apps have 2 or more AUTH token numbers. So how can we adjust many AUTH tokens in a single Code

[@LucidFX.]

GREAT video - thank you. How can i have 6 ESP32 and only control 1 Servo on each - press one button turn ALL servos to position 1, press another button return all servos to position 0 - may all be different degrees

[@electronic7979]

Very good project 👍 I liked it

[@TechStudyCell]

Thanks

[@aquinindiawatersensors327]

blynk bridge possible like push one nodemcu switch another nodemcu on nodemcu to nodemcu communication with blynk

[@arkamondal13]

I made a same to same project.but pins are different.d1,d2, d5,d6 . I use seperate power supply for node mcu and 4 relay's. After starting the project, only relay 2 connected with d2 toggles. Rest are controlled by blynk or manual switch normally. If i change the output d2 pin to another relay, same problem occurs. I dont understand what's the problem is! Please help. Thanks in advance.

[@davidperets9997]

how connecting the electricity? how to get to lamps? where to put the device? on the wall without any box? very risky From my experience! why need one modul for every room if one can deal with 4 lamps? you know that the switch must be on for the device to work, otherwise it will be more complicated and expensive. i don't know how much you understand about the electricity, but the diagram of elecricity wires are not real, it's not connect with the Electrical outlet But from the junction box. nice idea but not practical, even you didn't maked for real because you need to deal with the electricity.

[@pierricdoublet6248]

Super,thanks for sharing. Do you have the same possibility on blynk 2.0?

[@adilabusafa]

أهلا وسهلا بك مشكور .

[@shija1999]

Hi Can you please send the BOM and pick and place files for SMT services to use this pcb.

[@sarfarazalam295]

How many devices can be attached to a blynk server? Is there any limitation of connected devices?

[@TechStudyCell]

No such limitation. But If you use free Blynk account then you can create only 10 buttons. After that you have to purchase it

[@sarfarazalam295]

@@TechStudyCell thanks

[@vipulpatel7841]

Make video for blynk app. How to use one project use in multiple devices? Free Add bettary energy ? How to separate room 1 & room 2 ?

[@ssyaodeh]

Thank you very much for the excellent videos. Can you please tell me where can I buy very cheap electronic components like resistors and transistors and others but with free shipping cost to Israel.

[@hassanahmad9597]

I want to buy more energy. I can not do that when i tap 5000 energy it just dancing 3 dots How can I fix that?

[@muhammadnor4135]

help me sir, why is pushbutton number 1 not working even though it has been installed according to the scheme, the relay can only be turned on / off using the blynk application, what is the solution? thank you

[@rustamkureshi8246]

can i use esp32 in same program and project

[@TechStudyCell]

You have to include different library and some modifications required in the code. Will make video on this.

[@rustamkureshi8246]

@@TechStudyCell please make a video esp 8266 and esp 32 board working both this project

[@AnandKumar-ys4pq]

Hi, I need this project PCB Gerber file. But small changes required. Which is we only provide input of the 230v which will convert to 5v for node MCU and relay operation voltage. If possible please post that kind of Gerber file. Thank you....

[@hemanttechnical8899]

Bhai aap hindi me baat karte to or jada acha hota.

[@saiots8651]

Bro you are great.... you are doing really well bro keep it up ❣️❣️

[@TechStudyCell]

Thanks

[@srinivasece4698]

Hai bro plz make a video on controlling fan 2 fans and 3 lights in on esp32 or esp8266

[@payhostingcoorg2090]

Hi thanks for the videos there is any code for 16ch relay for on off with temp, humidity ,

[@t-rexjump1238]

for the 5 room and 4 button for each room how to use there is only 8 digital pins in esp8266

[@abdullahalrazi3491]

brother, please make a fan controller using nodemcu and blyink

[@vedantatechnosolutions5981]

Can i use this project using regular home switch to Manual control?

[@ΠΕΤΡΟΣΠΑΠ-ζ7ω]

All good, but when you turn off nodemcu and turn it on again with wifi but no internet, the physical buttons do not work

[@cemal8123]

Blynk is not free. It gives you limitted credit to use buttons so beware

[@joshitoshi9835]

one question tho..how many smartphones can be used to control appliances? i mean for example can we use 10 smartphones to control the relays?

[@yogeshitaliya473]

Bhai isko firebase ke sath kijiye please

[@TechStudyCell]

Okay

[@razwansaeed2228]

Great project weldon job. Dear bro When we connect our NodeMCU with the router board. As soon as the internet access ends or offline with blynk server(nodemcu connected with router). Push buttons don't work properly And we have to press two or three times To change relay state.

[@TechStudyCell]

Sometimes it happens due to loose connection. It's alway better to solder the Push button on zero PCB. You can also change delay(200) to delay(100) in the code.

[@razwansaeed2228]

@@TechStudyCell but when internet back mean blynk server online then all the project work proper... I think when nodemcu tries to connect to the blynk server during that push buttons don't work correctly untill internet back online.

[@razwansaeed2228]

Or turn off the router.

[@razwansaeed2228]

When we turn off the router then also working fine.

[@TechStudyCell]

Please use different power supply for NodeMCUs. Please don't connect the both NodeMCUs with laptop at the same time.

[@jeremytiempo9639]

Im new in Arduino environment im asking if button is for debouncing ?

[@arjunreddy2105]

bro can we use switches in place of push button please tell me my project is in middle

[@kerolosadel6841]

great job, i have 2 questions could i control them (2 esp8266)with google assistant or alexa or not?? and could i use 8-channel relay module with 8 switch for each esp8266?

[@skylai82]

Blynk already supports link to Google Home？

[@yogendrajamsariya1193]

Please my hearty request to you sir ,,, how to control Rbdimeer with sinric pro,,,

[@JitenderSingh-cw3nl]

Make project ESP 32 same

[@TechStudyCell]

Ok

[@mobilekalakar]

Good

[@TechStudyCell]

Thanks

[@cgrockstar3699]

Kiya aap program kar ke MCU module bhej sakte ho kiya

[@TechStudyCell]

you can buy the complete project. pls send email to [e-mail]

[@JonatanCastro-secondary]

I LOVE your videos man, great work. I was wondering if you ever thought about creating a small guide for people just starting out. For example one of the things I'm finding challenging is how to know when to use resistors or capacitors in a project, and how to calculate its values. Thanks once again!

[@TechStudyCell]

Noted. I will try to make separate video on it

[@JonatanCastro-secondary]

@@TechStudyCell you are the freaking best man! thanks so much :)

[@AliAhmad-ur6rt]

isme paid Energy points hai free points ke liye solution batao?

[@HaniSharif]

Great video man! A quick question: Do you need an internet connection or using hotspot/wifi is just enough?

[@АлександрЖидков-я2д]

Кнопки лучше не впаивать, а сделать винтовые колодки, чтобы вывести провода для кнопок. А так это просто макет

[@mohammadanish1380]

Sir nodmcu mobile se progiming ki video please

[@meanonymous1000]

bro for router there is limitation of connections . so what if we can make mesh and connect one of the board to router ? can this possible ? if so please share . and if possible can you make the status of relays retain even after power off and on for esp board .

[@Helloworld519]

Thank you brother. 🙏🙏🙏

[@TechStudyCell]

You're most welcome

[@dineshbarchikar9231]

Hi can i get the ready pcb plz let me know

[@TechStudyCell]

Please send email to [e-mail]

[@wafiullah-shafia]

Can I use same circuit and app and code with ESP-12F?

[@amitsharma1957]

Namaskar sir ji main apney children ko training dilwani hai kha se training milegi pls bataye

[@suvajitsau7117]

How to add Alexa in this project

[@TechStudyCell]

I have made separate project with Alexa

[@rajeshkj1158]

Hi really love this project...sir I want to connect 3 or 4 node mcus.....for another rooms for MCU 1 and 2 we used virtual pin 1234 and 5678 respectively for next MCU which virtual pin I have to configur....?help me sir for that what changes I have made to existing code

[@АлександрЖидков-я2д]

Ставьте любые значения и меняйте в следующем скетче на них, и в приложении blynk

[@garisonsystems2359]

could you plz give me any suggestion

[@TechStudyCell]

on what?

[@PINOYTECHMARLON]

hello sir what is the name of software u use for designed pcb?

[@TechStudyCell]

Diptrace

[@payyavulanaveen6967]

Here both node mcu and blynk app has to connect to same network OR IF node mcu connect to home wifi and blynk app to mobile network

[@TechStudyCell]

NodeMCUs can be connected with different WiFi network. But Auth token should be same. Just change the WiFi credentials

[@orangerucksack7083]

Great Project, as a complete noob and getting on in years, if I wanted to add 1 button to turn on/off the 4 lights at the same time , could you assist on how to ????

[@jagdishchauhan8683]

Sir 5pcbka Kitna hota hai jlcpcb me

[@TechStudyCell]

If you want to purchase the PCB, let me know. Send email to [e-mail]

[@aslamrahim5935]

Sir should we need to connect all 4 light to start the circuit or we can use it with single light

[@frankmarshall5977]

great video. can you supply the schematic for the pcb assembly?

[@DoyleColony]

Is there a way I could use this method with the wemos D1 mini?

[@Priteshpotdar]

Amazing video Can u Plz share the modifications for 8 channels relay board. Thanks

[@TechStudyCell]

For 8 channel I will prefer ESP32. I will make separate video on it.

[@anil1010it]

Can we do this(push buttons) for 8 channel relay module as well?

[@TechStudyCell]

Yes

[@ravirtech1260]

Hi sir make the 8 channel RF remote and WiFi home automation project

[@TechStudyCell]

Noted

[@fathimabinthsakeer8596]

Sir my blynk app is not working it showing couldnt connect to server i waited for 2 days no change what to do sir?

[@TechStudyCell]

First check if the NodeMCU is connected with internet. Otherwise you can reinstall the Blynk app and generate new Auth token. Then try again

[@bongmacambodia1031]

Thank you so much I am success your project code That's perfect .

[@bongmacambodia1031]

I need your telegram

[@slyvesterleeward9108]

Please can u do multiple nodemcus with alexa or Google home

[@TechStudyCell]

Noted. Will try to implement that.

[@diyhemantprojects2841]

But if I want to control in 3rd room virtual pins are not much , how to do that 🙄

[@TechStudyCell]

If you need more than 10 buttons, then you have to pay Blynk for that.

[@navneethk437]

Hello Sir, This is really a nice one. Could you please tell us, when Power Goes and comeback, all the relays are remembering its current state and ON/OF without any manual control? I guess, if we switch OFF the Node MCU supply, the ports states are reset. Please share your views. Thanks.

[@TechStudyCell]

Thanks. In this project if you turn off supply, it will not remember the previous state. But if you want you can get the previous state from Blynk server.

[@kishanmukhia1146]

Great concept for best home automation.with internet or without internet.

[@TechStudyCell]

Thanks

[@xan4o]

Hi bro. I really like to watch your videos. Every time I learn something new. I would like to ask you - is it mandatory to upload same code to both(or N number) of devices with the same token? My idea is(when I saw your video) to upload different code to a few devices with the same token and control them from one device(mandatory avoidind of using same virtual pin). Is it possible? Thank you!!

[@TechStudyCell]

You can change the code. But for all NodeMCUs, Auth token must be same and virtual pin should be different or unique for each device.

[@garisonsystems2359]

Switch SD3 CONECTION not working

[@davidperets9997]

the others works? how did you connect the lamps?

[@garisonsystems2359]

@@davidperets9997 V5,V6,V7,V8 In that pins one pin switch not working remaining 7 working

[@TechStudyCell]

I have not faced any issues with SD3. But you can use D4 instead of SD3. Please remember during boot process D3 & D4 should not be grounded.

[@TechStudyCell]

Already shared the circuit for connecting lamps with relay module during the video.

[@udayKumarpatil2008]

Sir I made this project. But instead of momentary push button I used touch module for controlling appliances. The problem I am facing is sometimes the appliances getting on or off automatically. Please help what could be the reason

[@TechStudyCell]

Please use different power supply for the NodeMCU. Please don't connect both NodeMCU with laptop at the same time. If you touch Switch then I will suggest you to increase the delay and during the touch the output pin of touch sensor should become low. And most important there should not be any loose connection.

[@udayKumarpatil2008]

@@TechStudyCell Thanks for the reply I am using this project from approx 2 month with single node mcu and working fine. 2 bulbs and 2 fan connected with relay. Total consumption with relays active is 750mA. I am using 5volt 1amp mobile charger as power supply. Touch sensor is ttp223 ia in active low mode. All wiring is properly soldered. Voltage input is supplied through Vin pin. I will monitor with increasing delay. Multiple cases in use observed after approx 1 month are as, 1. All relay in active state suddenly automatically changes the status to off or vice a versa 2. 1, 2 or 3 relay are active suddenly automatically balance relay get active or vice a versa 3. Some time touch sensor did not work but can be change relay state through blynk 4. Some time I have to touch and hold the the touch sensor for 2, 3, 4 seconds to change the relay status I prepare my project from your below link kzbin.info/www/bejne/nIOmh6tsrrCij9k Sorry I mistakenly asked the question in this project Any suggestions will be helpful

[@vishaljain6130]

please make a video on wi-fi universal remote using esp8266 nodemcu & Alexa

[@TechStudyCell]

ok

[@vishaljain6130]

@@TechStudyCell Keenly awaited

[@mohammmedadnan6942]

2:47

[@wafiullah-shafia]

Good Thank you Mr If I want only for one Rome what should I remove from code and circuit?

[@TechStudyCell]

No change required. Please refer to this video kzbin.info/www/bejne/nIOmh6tsrrCij9k

[@arachchigerasika8056]

Can you create 16 channels home automation with voice command , manual switches and using application

[@TechStudyCell]

It better to use 2 ESP32 for 16 relays with manual control. will make video on this soon.

[@sampathmadugalla4624]

@@TechStudyCell Thank you.

[@shahabakhtar6659]

Can we control with multiple blynk app

[@TechStudyCell]

You can control from different smart phone. Just login same Blynk account.

[@elmermandiade7309]

helo bro, will it work with (router) WIFI but without internet?....

[@TechStudyCell]

To control the relays from Blynk, the NodeMCU must be connected with internet.

[@popatdevkar3793]

Blynk server is down

[@michaelzajac5284]

What if it burn?

[@jyotirmoymandal5566]

It is fantastic video ever , thanks dear

[@TechStudyCell]

Glad it helped

[@satreaaji]

Will it work on blynk 2.0?

[@TechStudyCell]

Will make video on this soon

[@satreaaji]

@@TechStudyCell thanks

[@popatdevkar3793]

Bhai Blynk kaa server fail aa raha hai kyaa karu ?

[@michaelzajac5284]

Use the XOD?

[@noushadolakara]

Dear well description most useful thank you

[@TechStudyCell]

Most welcome 😊

[@noushadolakara]

@@TechStudyCell dear why the esp32 is getting offline after 5 to 10 hours ,after that we need to restart by push button or power off and on,any solution for it

[@tejorshibarik60]

Can I use switch instead of push button

[@TechStudyCell]

You have to use AceButton library and modify the code accordingly. Will make video on this

[@tejorshibarik60]

@@TechStudyCell ok waiting for this video