NodeMCU ESP8266 Alexa App Voice Control Home Automation System | IoT Projects 2021

[@TechStudyCell]

**Sinric will expire soon. Please refer to the following updated tutorial video with Sinric Pro. kzbin.info/www/bejne/naGlZWlmZdCYjaM

[@toninhoferreira3197]

We have long resisted getting an Echo. Never really saw a need. kzbin.infoUgkxhB5YOMNj04GuoAosExygP4cH-dKeb4aB When we recently completed some remodeling in our home, we realized we had failed to add a switch to turn on a certain lamp across the room. We couldn't run new wiring (which would have been expensive if we could), so we got our first Echo which completely solved our problem for about $40 (Echo Dot and smart plug). We just ask Alexa to turn on/off that light. Heartily recommend it to solve this kind of conundrum!

[@luie.no1noob]

Bro can u add a sensor to the A0 and get feedback in the Alexa app and one more thing can you add multiple wifi ssid, this would be useful when one network is down!

[@manmeetsinghKJ]

set the same wifi name in your mobile hotspot, that u use on daily basis, trust me this will work for sure, i do the same, whnevr my wifi gets down

[@luie.no1noob]

@@manmeetsinghKJ when I need to go out with the phone? then I won't be able to control it via internet

[@srivenkateshr2602]

I watched your and i done the project ghank you soo much. Next 8 ch relay project please upload the video thank you.

[@arbbairagi]

Nice project... Bro can you make a tutorial on AC fan regulator( AC Dimmer)?

[@gungunmaurya7957]

Nice and helpful video sir , Esp32 module is dual core wifi+Bluetooth so how can we make a full functional use of this board, I mean , try to make video of same in which any how Bluetooth also be included if possible, and can be controlled with Google and Alexa as well, Once again thanks for Making such a easy and wonderful video.

[@TechStudyCell]

This is possible. Will make video on this soon.

[@mihir3102]

Hi Sir. Thanks for this amazing tutorial! I have a doubt. What do we have to do with "VIN" and "GND"? I am a beginner so I am not familiar with these terms. Do we have to ground anything to the GND?

[@Sahel_prince]

Battery input

[@SekharRoy]

Nice project bro. Please make a project with Alexa and NodeMcu with soft credential. After changing the network it is required to provide SSID and Password in the program which is time taking.

[@nersalas7064]

What kind of switch did you use? Single pole single throw or single pole double throw?

[@RamaKrishna-gz9or]

Register option is not available on sinric

[@noelmorona8724]

Appreciated this video but just want to ask if it possible to make at least 8 relay to control 8 circuits?

[@kuldeeptripathi649]

Hey can you please suggest me how can I use Google assistance without ifttt because it's only letting 3 applets

[@techbhatia]

Can you please add a 5v power supply to the pcb so that it becomes a sand alone system? Also, if you could build a version with fan regulator it would be great.

[@anshulgupta9893]

Dada.. Sinric is Ending up on 31 Aug, Is there any other from which we can control like same after this time

[@cyrobyte69]

no it is not

[@subharaju854]

This is the thing I need

[@joshitoshi9835]

can we control from multiple phones?

[@pcvally2646]

Yes you can

[@rahulseran762]

How many devices can a single module access?

[@GK-rr3fe]

i done it my home thanks a lot for a video....

[@dharun9963]

Very nice bro Will do it one for my home But i have a doubt, if there is no wifi when node mcu boots Will it can still be controlled manually

[@TechStudyCell]

Yes. But make sure when you boot NodeMCU, all switches should be off.

[@dharun9963]

@@TechStudyCell but switch doesn't work for me when booting

[@TechStudyCell]

During boot will not work

[@dharun9963]

@@TechStudyCell i mean when there is no wifi available during boot It works only when it gets wifi

[@gi_ke_films]

@@TechStudyCell I mean wifi is on every thing good but when the manual switch is in on condition then nodemcu is not starting no response . Please help sir

[@raushankashyap1482]

You can make IR and tuch/manual switch control home automation circuit.... Please....

[@TechStudyCell]

Ok

[@manmeetsinghKJ]

you are my hero.... but i want you to add fan speed control also in same project... plz plz.... plz... manmeet

[@nersalas7064]

How to do that with 8 and 16 relay switches please help me for my final year project

[@TechnologyWithSaikat]

Sir, is it possible to make same thing without using sinric or other 3rd party service?

[@TechStudyCell]

yes. but you need an Alexa Device. pleas refer to following video. kzbin.info/www/bejne/hXuXdK2NrreEqJY

[@sakeerhussain3506]

I want to create account in sinric so its not possible. any other ways to connect esp8266 nodemcu to google assistant or alexa without sinric or iffttt I have already programmed blynk and its working but i want to connect to voice commands what to do ?

[@TechStudyCell]

You can refer the following video. I have not used any third party plugins. kzbin.info/www/bejne/hXuXdK2NrreEqJY

[@sakeerhussain3506]

Would be it possible that using alexa app instead of speaker sir?

[@PatnaikUC]

Serial monitor repeats this as seen below. What is the problem? ets Jan 8 2013,rst cause:4, boot mode:(3,7) wdt reset load 0x4010f000, len 3460, room 16 tail 4 chksum 0xcc load 0x3fff20b8, len 40, room 4 tail 4 chksum 0xc9 csum 0xc9 v000672b0 ~ld

[@vanshagarwal8894]

Sir i am not able to upload a simple blink code also to my nodemcu it shows fatal error. Is there problem with board or any other thing please could you say.

[@koteswararaoneelapu3432]

In coding upload time long press boot button in nodemcu

[@ebrahimrayab8568]

Had same problem... Solved now

[@adityaroy4261]

Can you make a video on how to connect the wires with the relay module and nodeMcu with the manual switches. Really need some help

[@TechStudyCell]

I will share complete circuit in next video

[@adityaroy4261]

Thank you soo much. Means a lot

[@aadilsalman5045]

Can you make a video for wiring the manual switches

[@TechStudyCell]

Okay

[@vaibhavgarg7575]

Can I get a circuit diagram of how to connect switches too with it?? And will it allow me to use in different phones.

[@TechStudyCell]

You have to connect the switches across esp32 gpio and GND pin. Please refer the circuit shared during video.

[@aberateklehaimanot9804]

awesome project,is the Alexa Amazon APP not for free because i am not able creating account on the APP in order to open it.

[@TechStudyCell]

It is completely free. Please Google if any restrictions in your country

[@laboratoriobriot4513]

Hello TechStudycell, My app Alexa and Sinric is ok but all my devices on sinric is offline, so I'm can't send comands from Alexa...What can it be?

[@TechStudyCell]

Are you using Sinric Pro

[@laboratoriobriot4513]

@@TechStudyCell Yes, I am only 2 devices. Will it be because I'm not using Api Key Secret?

[@vincelinda212]

hi i have one question can we use 8 channnel relay this unit

[@electronic7979]

Super 👍

[@TechStudyCell]

Thanks

[@jairrocaviteri2358]

Good job, thanks 👏🏽 👏🏽

[@Payalgamingfan20]

Should we connect same wifi

[@chinmayil1pat615]

Superb Bro I had tried it and its working superb 👌👍👍

[@TechStudyCell]

Great 👍

[@sairambattu4019]

am getting an error on json can you find it

[@sairambattu4019]

"json was not declared in this scope" is the error at line number 145 for " String deviceId = json ["deviceId"];" ....

[@ahmedbelfakir6688]

@@sairambattu4019 me too

[@gi_ke_films]

Sir please add one amazing thing that it can remember the last state of switch in push button whether it is on or off when power cut

[@gi_ke_films]

Please sir make possible please and provide code in discription

[@amanfaizal7848]

hey buddy! this project is awesome. can i do the same using 8 channel relay module and control 8 devices?

[@TechStudyCell]

Yes you can! you have to use ESP32. Please refer the following video: kzbin.info/www/bejne/mGbco2B-a899d8U

[@amanfaizal7848]

@@TechStudyCell oh, ESP8266 is not possible?

[@house89147]

Good video. Nicely done.

[@TechStudyCell]

Thanks for the feedback

[@sermsaklimpadapun6054]

Thanks for sharing. Where is the wiring diagram?

[@buckbhola]

How did you create the PCB software file? Which application did you use?

[@TechStudyCell]

Diptrace

[@buckbhola]

@@TechStudyCell Any quick tutorial you recommend, a weblink or video series? Just want to shorten the learning curve, thanks much!

[@ahmedbelfakir6688]

I hade a problem during a plodding code witch 'jason' was not declared in this scope where should I declare it

[@akhila23]

Can we add Arduino iot cloud instead of sinric in this project

[@drelectronics13]

Can't we make project using Google assistant in android .plss make a video on it

[@TechStudyCell]

I have started working on this. Thanks.

[@sanjaykhatri6093]

I am not getting this amazon alexa app on google play store can you send the link of this app

[@arifhossain6845]

Same project google home googe ki babe use korbo

[@gi_ke_films]

You are great 👍👍👍👍👍👍👍👍👍🙏🙏🙏🙏🙏🙏🙏🙏

[@arkthacker4983]

Sir how we have to add push buttons directly ground and digital pins or using a resistor

[@TechStudyCell]

Just connect push button instead of switches. I have used input_pullup function in code. So resistor is not required.

[@shahriarhassan7165]

You have mentioned components twice, once with 4 elements and another with 10 elements (diodes, optocouplers, transistors, etc). If I don't use any PCB is it okay to try the project with only node mcu, relay, and switches? I mean without any diodes, transistors, etc you have mentioned later.

[@TechStudyCell]

Diode, transistor required to make relay module circuit. If you use relay module then you don't need them

[@shahriarhassan7165]

​@@TechStudyCell thank you very much for the reply. And one little question, so if I use a relay module then I only need to buy a node mcu, no extra resistors/capacitors/diodes/transistors will be required?

[@TechStudyCell]

Yes. But currently you can't register in Sinric. You have to go for Sinric Pro

[@shahriarhassan7165]

@@TechStudyCell Thank you for your support, really appreciate it.

[@shahriarhassan7165]

@@TechStudyCell Amazon Alexa app is not available in our country. Can I use any other app like sinric pro for the project? or can you suggest any other app?

[@yawarsaeed6499]

Thanks for sharing such an Awesome project. I compiled the code with all the required libraries selecting NodeMCU 1.0 (ESP-12E MODULE) but it gives error on compiling at line ButtonCofig config4; 'ButtonConfig' does not name a type. Can you please guide why I m getting this error. I m using Arduino IDE 1.8.3 Awaiting your earliest response. Thanks.

[@TechStudyCell]

Download the latest version of AceButton library from the given link. And install it

[@yawarsaeed6499]

@@TechStudyCell Hi dear, I installed Ace button latest library 1.8.1 but I m still getting "Error compiling Nodemcu 12e". Can you please share which versions for all the libraries are you using in this code. So I use same versions . Secondly In board manager what versions for avr & esp8266 are you using. Please guide. Thanks once again.

[@sakshitayade2440]

@@yawarsaeed6499 I have same problem for node MCU compiling. If the problem is solve from your side please tell me what you do ?

[@lathiyavijay9548]

BRO. CAN YOU MAKE THIS PROJECT WITHOUT (SINRIC) ONLY ALEXA AND MENUAL SWITCH (NOT PUSH BUTTON SWITCH)

[@sakeerhussain3506]

Sir please do a video of using sinric pro instead of sinric version 1 i have no account in sinric version 1

[@TechStudyCell]

I try to avoid using any paid platform if free alternative available.

[@reinaldoleandroorlandini1460]

Muito obrigado por compartilhar seu conhecimento amigo. Me ajudou muito. Parabéns

[@lavanyamukkamalla9199]

Sir,can I use 4 channel 24v relay

[@avinashchauhan]

I Need EEPROM.h code in same project for state power please provide

[@avinashchauhan]

sir plz eeprom wala coding bnaiea iska.. Mere paas ek code hai eeprom wala lekin wo sahi se kaam nai kr rha kya ap uss code ko edit kr sakte hai agar mai apko dun to????

[@pilamarozaeta5433]

pls help, error message during uploading "sinricpro.h: no such file or directory"

[@rusty3699]

Do you have the readymade PCB for sale?

[@TechStudyCell]

Yes Please send email to [e-mail]

[@rusty3699]

@@TechStudyCell sent

[@praangel6088]

Bro in remote areas many times power cutoff hapeens, and thus it cause network drop as well. I tried this project but when power cutoff and network cutoff happens this nodemcu doesn't connect automatically to alexa......is there any code i can try where nodemcu will keep connecting or check connection every one or two minutes and connects again....i dont want to use use sinric or other paid platforms....thanks

[@TechStudyCell]

Here I have not used any paid platform. I have used free version of Sinric. It will take some time to reconnect. If you don't want to use any 3rd party plugin then please refer to the following video. kzbin.info/www/bejne/hXuXdK2NrreEqJY

[@praangel6088]

Bro thanks for ur video it was helpful....I was also facing some other issue...if u can guide it will be helpful....I hv added two node mcu (living room and kitchen) and alexa is detecting 8 devices but whenever I try to create group in Alexa app either it will take first device from first nodemcu or from other nodemcu but not both at a time

[@manisofat5240]

hi! i watched your video and i too want to build the same for me. but i have a doubt, can u please resolve my query? my queation is: if i turn ON the bulb from switch and as u said we can see its status in alexa app. then can we turn it off from alexa app. (meanwhile the manual switch was ON). is it possible?? plz reply. thanx

[@TechStudyCell]

Yes, you can can turn off from Alexa app. The manual switch will remain in ON position. Again to turn on the lamp from manual switch, first have to turn off, then turn on the switch.

[@manisofat5240]

@@TechStudyCell : thanx bro, i too was asuming the same. but there is one issue. if the relay burned up (or failed to work) then the light will not ON until we replace the burned relay with new one. am i right??

[@samkumar6953]

Sir please help, Error: no match for 'operator[]' (operand types are 'ArduinoJson::DynamicJsonDocument' and 'const char [9]')

[@yashindian4233]

Hi will there be a code change if i use Sinric pro.com instead of sinric.com?

[@vpalanimurukan]

Superb👍

[@vpalanimurukan]

Bro this project details I want build one like this

[@TechStudyCell]

Thanks

[@gi_ke_films]

@@TechStudyCell sir when manual switch is in on condition then if light goes and came again the nodemcu is not booting or starting please solve this problem

[@gi_ke_films]

@@TechStudyCell sir please help me when the switch is in on condition nodemcu board is not starting if you not understanding me do by yourself but please sir help me... After power cut of nodemcu if switch is in on condition then if power came then nodemcu is not starting please help me sir

[@TechStudyCell]

The switch1 (SD3) should be off during start or boot processe. Because if SD3 grounded, the boot will fail.

[@vijaypanchal5737]

Hey bro can we connect 8 ch to node mcu esp 8266 lolin board with 8 mannual switch if yes plese share code

[@tejaunnamatla8876]

Bro ihave purchased all the products today

[@tejaunnamatla8876]

Is this video...enough to do this project I am doing this for my acadameic project...please help me to do this bro

[@tejaunnamatla8876]

It was very important to me bro

[@4uhacks767]

@@tejaunnamatla8876 Did you made this project?

[@rajhanskumar572]

how much load(Amp.) can we put on it.

[@anshulgupta9893]

Bhai Please tell me... What will we do because sinric is expiring on 31 Aug.... Also can you provide code for sinric pro, it provide only 3 free devices

[@TechStudyCell]

I will publish the video on Sinric Pro by this weekend

[@anshulgupta9893]

@@TechStudyCell Thanks alot... I also found 1 more app SMARTNEST it is also giving 5 free devices

[@payyavulanaveen6967]

HOW initialize when using normal switch instead of push button pls tell sir how to initialize when using normal switch pls

[@TechStudyCell]

For switches, I have used AceButton library.

[@sajilsuresh8320]

Sir sinric is no allowing new accounts. Is it same procedure for sinric pro? If yes how to get api key

[@TechStudyCell]

Yes. They made this change. You can refer to this video kzbin.info/www/bejne/mGbco2B-a899d8U

[@gi_ke_films]

Sir please upload the code with push button

[@TechStudyCell]

Link shared in the description. Please check.

[@prasantamandal8612]

Dear, great job, very useful. Can you provide me Pcb Gerber file for 8channel relay module?

[@TechStudyCell]

Please watch this video. And download it from description. kzbin.info/www/bejne/mGbco2B-a899d8U

[@prasantamandal8612]

Thanks thanks...

[@VijaySharma-ky5yc]

Why a reset is required frequently? Showing this arrangement is not stable.

[@TechStudyCell]

Reset is not required. Just upload the code and use it. During starting the NodeMCU switch 1 should be off.

[@karthipalanivel7824]

Bro how to power 12v 8 channel relay module please guide me

[@TechStudyCell]

Give separate 12v supply to relay module, and 5v supply to NodeMCU. Connection of control pins will be same.

[@karthipalanivel7824]

@@TechStudyCell ok bro

[@sylu4537]

Bro how to change this code for 8 channel relay synric?

[@muhammadammar5001]

I tried it before 2 days but still have problem error plzz help.... Error compiling for board NodeMCU 1.0 (ESP-12E Module). Invalid library found in C:\Users\ammar\Documents\Arduino\libraries\Arduino-master: no headers files (.h) found in C:\Users\ammar\Documents\Arduino\libraries\Arduino-master .

[@TechStudyCell]

Download and install the esp8266 board in Arduino IDE

[@satyambhargav9661]

i have followed the entire video step by step, my circuit are working even my switch board is also working but my relay board is not letting the current to flow due to which my lights are not tuning on of off i have using 4 channel relay board, i just wanted to use two lights for the same and i have also checked my connection more the once but there is no success UPDATE : - SOLUTION also need to connect JD-VCC(on relay board) to VIN(on Nodemcu) NOTE :- while turning on or off the lights relay board will make a clicking sound which is normal

[@TechStudyCell]

Question is not clear to me. First check the circuit carefully. During starting the NodeMCU the Switch1 should be off.

[@satyambhargav9661]

@@TechStudyCell when i connect a bulb with the relay and try to turn on/off it, the LED on the relay turn on/off but the bulb connected with the relay does not light up but when i connect JD-VCC(on relay board) to VIN(on Nodemcu) and VCC(on relay) to 3V3(on Nodemcu) the bulb start responding to my command

[@ИльяЛарцин]

Я хоть и не знаю вашего языка, но я все понял! Спасибо!

[@chirots]

Why do you do a project that one nodemcu controls 2-3other nodemcu by pressing on main nodemcu?

[@TechStudyCell]

Ok

[@handmasterluk]

It is very good video. It like me. 👍

[@TechStudyCell]

Thank you very much

[@handmasterluk]

@@TechStudyCell you are always welcome

[@nsetiaji]

Sir, where is the video of home automation using Google home assistant and without MQTT broker?

[@TechStudyCell]

Found some bugs. Will publish the video once everything fixed.

[@siray8212]

Where you buy switches like that????

[@TechStudyCell]

any electrical shop

[@montushmalakar7187]

What app you used for circuit board

[@TechStudyCell]

The official Amazon Alexa App. Please refer the article shared in description.

[@wingsanand1303]

Sir provide push button code please

[@TechStudyCell]

Already shared the link for Push button. Please check description.

[@ionmihailenco4383]

In Alexa app you are not notificated if your device is on or off. Need somme changes in program. If mi device is offline, in the app it is online everitime, not good.

[@vaibhavgarg7575]

whenever I connect my switch with ESP8266, everything freezes and stops working. made every possible move ut couldn't come out of the loop. Please help

[@TechStudyCell]

During starting (booting) the NodeMCU switch 1 should be turn off. After that the boot you can control as you want.

[@koteswararaoneelapu3432]

sir ple send code 8channel with manual push buttons sinric operating for tuch switches

[@TechStudyCell]

Shared

[@akashmridul178]

Bro i need help 😭 I can't setup library 😭 Can you give me liberty setup tutorial 🙏

[@mayankpatel6715]

Maximum number of relay with ESP32? MAY I ADD MORE THAN 8 RELAY?

[@TechStudyCell]

Yes

[@mayankpatel6715]

@@TechStudyCell I kindly request you to please make a video with maximum use of relay with ESP32 and share on your website as well. And please use stock pcb which is available in indian market. Most of us cannot print pcb from jlcpcb.

[@a2enterprise]

Sir, sinric free ver is expired, so I tried with sinric pro, the error comes at 89%, while uploading. Please suggest.

[@TechStudyCell]

Will make video on it soon. Thank you

[@fhussainmomin268]

Sir great project... Sir make..project.. . Nodemcu with 8 channel with fan dimmer + RF remote-control + manual + application with wifi and without wifi... +

[@TechStudyCell]

For 8-channel Relay module you have to use ESP32

[@fhussainmomin268]

@@TechStudyCell ok sir... With esp32

[@ikoonoo5929]

Is there anyway add this project to home assistant?

[@TechStudyCell]

I have to check that.

[@shafnaspp4188]

error: variable or field 'button1Handler' declared void please help me

[@mahantkumaryadav4430]

sir how to use this type switch with esp32. plz make a vdo on this

[@TechStudyCell]

Already done. Please check our previous video

[@mahantkumaryadav4430]

@@TechStudyCell but previous vdo you joint a push bottan

[@Vinay._.7]

can I control 8 channel relay

[@Vinay._.7]

please give code for 8 channel relay module

[@bscpe-coloma7853]

can i use 2 app key from 2 different account ?

[@TechStudyCell]

No

[@kritakbiswas3627]

Tnq bro..🔥❤️

[@anikgomes7801]

2.10 why the switch automatically turns on?

[@MahmoudMohamed-jc7io]

thank you man

[@TechStudyCell]

Welcome

[@MahmoudMohamed-jc7io]

@@TechStudyCell really I want to kiss you for this perfect code ❤❤❤

[@KarthikVijai-hl7ws]

I got an error...variable or field 'button1handler' declared void...pls give me solution

[@TechStudyCell]

Please install the Acebutton library.

[@KarthikVijai-hl7ws]

@@TechStudyCell thanks bro please give me your mail id or whatsapp i have been following you...u done a good job

[@KarthikVijai-hl7ws]

@@TechStudyCell bro i already installed it..but still i got an error..can u send me Acebutton library and code pls

[@rkyadav8729]

sir from where should I get the library

[@TechStudyCell]

link shared in the code. please refer to this tutorial kzbin.info/www/bejne/nGfSp35rbNaDiMk