Smart Home Automation System with multiple ESP32 NodeMCU IoT network with Blynk | IoT Projects 2021

[@a.moyewole1425]

Awesome work from Nigeria

[@madmacks]

You have several videos that reference the two custom PCBs you designed. I’ve used your gerbil file and orders 10 PCBs (Thanks for posting the file!). But, it would be nice if you could make a video that walks thru the board circuits and explain the purpose of the diodes, resisters, pin connectors, switches, etc. I can probably deduce their purposes, but your explanation would be more helpful! For example, on the switches, I assume they’re momentary 2 pin but o don’t know the pin spacing. I also not know the purpose of the pins directly above the switches. I assume they are so you can skip the on board switches and use remote switches, but what’s the VCC for? If you explain your design it would be great! Thanks…

[@lakshminitc]

WoW!!! you've done quite a lot of research on that!!

[@TechStudyCell]

Glad it was helpful!

[@GurinderSingh]

Is Mobile connected to card need any other wifi router

[@blackhat4817]

super bro........ i love your project

[@TechStudyCell]

Thanks

[@mohankarunamurthy9739]

Excellent video sir. I have some questions. 1. We are using different micro controllers then How do we select the eps32 and nodemcu in blynk? 2. Can we use mobile network data to control the appliances from outside? Assume that nodemcu connected in WiFi. 3. Can we use this circuit in real time scenario? is that working normally?

[@TechStudyCell]

I have already answered all the questions during the video. Please watch complete video. Then let me know if you have any doubts.

[@mohankarunamurthy9739]

@@TechStudyCell ok thanks. What about 2 and 3 questions?

[@iamvarunverma]

​@@mohankarunamurthy97392.....yes if your nodemcu is connected to wifi u can use it from anywhere on this planet condition is only u have a working internet connection 3.Yes it is working absolutely fine

[@mohankarunamurthy9739]

@@iamvarunverma thank you so much varun

[@ajithkumar6105]

The normal switches can be leave as such for normal off/on function and only parallel connection from the switches need to be connected to the relays. what is the need to transfer the normal functions of the switches also to the ESP 32 and relay.

[@Venkatmas]

How to maintain last State after power resume? In iot node mcu project,using extranal eeprom

[@mohankarunamurthy9739]

Thanks for sharing this video. Can we upload two or three software programs in one ESP? how we can upload two or three software function in one ESP for multiple functioning? for example my first software program is wifi connectivity check and second program for home automation. Is that possible to do multiple software programs?

[@joaorobertobeto6393]

Muito bom seus projetos parabéns gosto muito

[@ABCXYZ-fg8vu]

Can I use the code even if I don't have ESP32 board?

[@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 ?

[@pierricdoublet6248]

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

[@pasinduelectronic1955]

Find a salutation ?

[@electronic7979]

Nice project

[@TechStudyCell]

Thanks

[@tharushasankalpa260]

Excellent Sir, Can we control multiple ESP32 modules with ESP Rainmaker?

[@TechStudyCell]

Yes

[@r.pranay4486]

Can we connect projector as one of the appliance??

[@vishaljain6130]

please check in nodeMCU switch pin 2 , there is D3, please tell me how can be used. Instead of D3 you should use 0 (GPIO 0). If I used 0 (GPIO 0)than code is not uploaded. You may try. If I upload the code as per you (with D3) than Wi-Fi is not connected. please reply and suggest.

[@pookoye]

Is it possible to control esp 8266's relay by pressing esp32's switch? how can achieve this?

[@adityaroy4261]

Excellent video Sir

[@TechStudyCell]

Thanks for the feedback

[@saiots8651]

v v v nice video broh... keep it up

[@TechStudyCell]

Thanks

[@jaywantrawal503]

Nice project. I have tried with Lolin nodmcu it not having SD3 pin (having s3) . this input chanel not working, if peessed nodemcu rebooting. how to overcome this problem

[@shija1999]

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

[@simbuking2567]

Nice video sir. Please make a fan regulater with esp32

[@TechStudyCell]

Thanks. Fan regulator will take time.

[@Removerse]

Hello sir ! I saw this video and tried making it but there is one problem that the moment the hotspot is disconnected the lights are switching off automatically. Is there any way to resolve that ?

[@vanshagarwal8894]

Sir when i turn on the manual switches my appliances turn on and off repeatedly. I used the nodemcu code which was there in your website. I suppose that the code is for push button and not for manual switches. So could you please clarify.

[@TechStudyCell]

If you use push button then refer to the previous video. For this video you have to use ON OFF switch. And use separate 5V power supply.

[@vanshagarwal8894]

@@TechStudyCell Now it works flawlessly.

[@anandhurajeev4046]

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

[@jijithn9501]

is there any way to retain the last state of the relay, after a power failure?

[@vinothvinoth-tw2zl]

sir, As per instruction i do all procedure but after upload all relays are ON condition switch operation not working and also blynk operation not working need your support

[@JitenderSingh-cw3nl]

Nice Details 👍😊👍😊😊😊

[@TechStudyCell]

Thanks

[@angellopezrodriguez3417]

help me ! I only have a router without internet, how can I use mqtt, esp and an apk?

[@iamvarunverma]

u need a raspberry pi and install Home Assistant on it then u can use

[@drelectronics13]

Make no internet only mobile wifi home automation like bluetooth

[@TechStudyCell]

Ok. Noted

[@josepiva6280]

Olá sempre aço.panho.seus tutoriais neste projeto com blynk daria para adicionar Alexa com comando de voz tbm.

[@thatiotguy8837]

Where did you get the green sheet from?

[@joshitoshi9835]

can we control appliances through multiple phones? how many?

[@TechStudyCell]

To control appliances from multiple phones, you have login same Blynk account from all the mobile. No limit for number of mobiles

[@joshitoshi9835]

@@TechStudyCell thats great. thanks

[@isteevanmangalore9171]

Hi please make video how to interlink two modules operating with switches...I want to control room 2 lights from room 1 controller using switch

[@vinni5497]

Hi how to use esp32 c3 for the same circuit

[@musaddiqueahmed4662]

Nodemcu not save load last status.. Nodemcu connect to wife all load off....pls reply

[@luie.no1noob]

Make one single remote for all those esp boards!

[@TechStudyCell]

Ok.

[@mohankarunamurthy9739]

When i try to order PCb for gerber file which is having more delivery charges (35 dollars) and board cost 7 dollars. How we can order cheap PCB board?

[@TechStudyCell]

Please send email to [e-mail]

[@anshchawla566]

Bhai ek hi content kitni baar upload karega no hard feelings but ek hi topic par itni sari videos upload karke thode na channel grow hoga

[@maatramathumunnetram1022]

Bro please tell me power cut resume options in r not?

[@arnavkotiyal369]

Bro i need a iot based smart home system where i can perform security attacks and demonstrate how to prevent the system from the threats is it possible or can u help me out i need that project for my dissertation

[@shakerileiwat4341]

Awesome ♥

[@TechStudyCell]

Glad you like it

[@yogeshitaliya473]

Nice one

[@TechStudyCell]

Thanks

[@yogeshitaliya473]

@@TechStudyCell 😍😘

[@boopeshkumarprabhakaran]

Can I control with Alexa and Google too?

[@TechStudyCell]

Will make video on this

[@orangerucksack7083]

@@TechStudyCell Hi , another great video, just ordered 8 relay pcb based on your design from jlcpcb , I would love to be able to control from push button, Alexa and Blynk, look forward to this if you can, many thanks

[@iamvarunverma]

Only Alexa if u want to control it with google u have to buy Pi and install HA on it

[@TechTeachesYou]

Can you please provide the simulation file for simulating it.

[@skasture9243]

esp32/1.0.3/cores/ sdkEsp32/hardware/esp32/1.0.3/cores/ esp32/Arduino.h:158:12: error: 'std::isinf' has not been declared How can I solve this error

[@ravirtech1260]

Please make multiple phone to one nodemcu with it remote home automation

[@TechStudyCell]

Ok. Noted

[@prasannagandre]

You just need to log in on blynk from multiple phones

[@rajuraushan4391]

Please Add eeprom to remember last status of device..

[@Aaa-l4k5t]

how u can connect esp32 with switches??

[@vipulpatel7841]

Make video for blynk energy balance.

[@amirhayat2799]

]how much does this cost bro?

[@nimaiadak2563]

Sir pls give me the code of controll home appliences with wifi blink and bluetooth and also ir remote and manual switch by #esp32 And i have a question :- if the esp32 board is connected with a wifi hotspot then i turned off my hotspot then again turn it on but why the esp32 board not connected to the hotspot automatically? If you know the reason and code pls give the code. Thank u sir.

[@mrhkmechanical7145]

1 alexa device se kitne esp 32 ya node mcu control kr sakte h Sir. Mujhe 3 room and 1 hall control krne h Please help me sir 🙏

[@mrhkmechanical7145]

Hello sir tell me

[@iamvarunverma]

@@mrhkmechanical7145 u can connect as many u want just add room 1 2 3 4

[@mrhkmechanical7145]

@@iamvarunverma Yes Can you tell if 4 esp32 modules can connect to an Alexa application

[@joshitoshi9835]

@@mrhkmechanical7145 do you know what does "connect as many as u want" means?

[@anshulgupta9893]

Can we manage this with Alexa also?? Pls share code

[@TechStudyCell]

Will make separate video on that.

[@anshulgupta9893]

@@TechStudyCell Dada video will be time taking, can pls upload code before that... So that I can complete my project

[@imdhemant]

Can we sell this projects?

[@TechStudyCell]

Please send email to [e-mail]

[@mrhkmechanical7145]

Sir ye esp32 devki v1 devki v1 kya hota h

[@rustamkureshi8246]

bhai, sab kuch theek hai par room me 1 regulater hota to or bhi theek hota kya aap regulater add kr skte hai please project pura ho jyega TECHIESMS sir ne esp32 me fan regulater add kiya tha wesa hi bnalo

[@iamvarunverma]

it wont work well

[@khurramjamal554]

PCB mein relay ki Jo 8 pin h usmein Vcc wali pin ko supply kha say dia

[@TechStudyCell]

Question is not clear to me. Please refer to the circuit shared during the video.

[@khurramjamal554]

@@TechStudyCell Nahi may ya kha Raha hoon Jo vcc wala jumper wire kha Lago JLC PCB may relay ki Jo pins Han us may vcc Ka wire kha Lago

[@iamvarunverma]

​@@khurramjamal554Connect VCC to 5V input + and GND To 5V - (U can use old charger also)

[@pierrezanou6650]

hi, i want to have all the system you make

[@mr.rajeshnamdevshinde4273]

बनाके मिल सकता है क्या

[@bhimraokamble9931]

Sir please give code for 8 relay...

[@pasinduelectronic1955]

Still working this?

[@ashaphalthapadev3612]

Namaste sir code link

[@saiautomations12]

its not working in offline

[@PrakashDars]

Hello Subhajit, I have sent you an email for business related topic, could we connect and discuss on it. It would be great if you could reply. Regards Prakash