Arduino Bluetooth Relay Control | Bluetooth Relay Switch

[@anirbanbanerjee7562]

The problem is that I can't change the state of the relay. Theoretically, when I press on a switch on my phone, the relay should be open/closed. Instead, nothing happens. I've checked the pins connected to the relay; they are powering on/off, so I doubt that it is a coding issue. But nothing is there in coding part or connection. So how to resolve ta issue. Please help

[@chidiayoanasonye9243]

Why do you use arduino pin 2 and 3 as RX and TX . Thought arduino uno RX and TX pin are pin 0 and pin 1. Please explain to guide me

[@AhmadLogs]

I want serial communication to computer. and usb uart pin0 and pin1 are used for usb serial. and these pins are also used for uploading code to arduino. and we cannot use these pins to communicate both with sim800l and computer at the same time. that's why I did not use them.
So, I have used pin2 and 3 to communication with sim800l using SoftwareSerial library.
you might use pin0 and pin1 to communicate with sim800l.

[@trevorbelmont4633]

How to know if my module is for 5v or 12v(car)?

[@Izor12]

my "data" var is � so the if statemetns are never true, any idea how to fix it

[@AhmadLogs]

I think there is issue with serial communication

[@Rahul-bk3fq]

Mast project hai

[@AhmadLogs]

thanks

[@faizalaliapriyono1096]

Good video!! But can it work with at-09 modules?? Or it will have different codes? Thanks👍

[@AhmadLogs]

I never tested at-09 modules.

[@faizalaliapriyono1096]

@@AhmadLogs thanks for reply, i actually had tested it and work, thanks a lot👍

[@AhmadLogs]

@@faizalaliapriyono1096 thanks

[@mdmilonkhanpowersource2006]

vary good

[@AhmadLogs]

thanks

[@Samet_Topuz]

Dear Ahmad,
It was a very nice video. Thank you for that.
If we want to connect an LCD (2x16) to the circuit, how do we need to revise the code.
Can you please help

[@AhmadLogs]

then lot of changes are required. make a function for your lcd. then use that function to display required data to the lcd

[@Samet_Topuz]

@@AhmadLogs thanks your answer.
I used the "serialprintlcd light1 on or light1 off" command right after "light1 on or light1 off" , will the program right?

[@AhmadLogs]

@@Samet_Topuz yes, it must work. try testing it

[@nkmatheducation4550]

Every thing ok but led light not work on..??

[@AhmadLogs]

what is the output of serial monitor?

[@chidiayoanasonye9243]

How can I do this programming using my android phone . Please explain

[@AhmadLogs]

which programming you are talking about?
Arduino programming?
or Bluetooth app development programming?

[@chidiayoanasonye9243]

@@AhmadLogs arduino programming

[@AhmadLogs]

@@chidiayoanasonye9243 install
ArduinoDroid app in the phone. this app is used to program the Arduino using android phone

[@Rahul-bk3fq]

Op

[@indrajatiantonio4465]

Hi there
Would you like to give me the app link. There are too many on playstore.

[@AhmadLogs]

amazingly, the app is disappear from the play-store. but I don't know why?

[@indrajatiantonio4465]

Thank You for your reply. Any other app compatible with your program?
Wassalamualaikum

[@AhmadLogs]

@@indrajatiantonio4465 try this app
play.google.com/store/apps/details?id=dev.merahkemarun.arduinobluetoothrelay4ch
there is also tutorial there. but unfortunately, I did not find any voice control app

[@jailbreak7750]

for android only
bluetooth iPhone can't connt

[@AhmadLogs]

you are right

[@AwesomeBruvh]

Relay ko jo power cord connect ki hain voh kaha milegi?

[@AhmadLogs]

these are simple AC wires. contact any electrician, he will provide you the cords

[@user-xb5uk9ob1z]

Code for arduino??

[@AshanDimuthu-ch2ec]

Pleace give me this coard..

[@SABIN_CREATOR_1]

Code link

[@robotman4952]

R U Bangali?

[@sohaibsohaib5462]

Bi Bluetooth module ke range ktni ha

[@AhmadLogs]

10 meter