TUTORIAL ON ELECTRONIC DOOR LOCK USING ARDUINO UNO, LCD I2C, 4X4 KEY PAD AND 12V SOLENOID DOOR LOCK 

sir which virtual software you are using

Hello, What line in the code controls how long the lock solenoid is energized? beyond a few seconds will burn out some locks. Edit: I see its the line digital write (relay pin, low) delay 2000

12v solenoid lock works with 9v battery?

hi thank you for your work. i have a problem the relay module keep going on and off after i plug the arduino to pc usb port whats the problem ?(SOLVED)

Weldone momin bhai. Keep it up. Appreciate your work.

Nice circuit, bhai. But one problem: How can you unlock the door on both sides of that door?

Which software are you using for circuit

Nice..100% work thankyou

Is there a difference with a green background lcd an blue one?

bro tinkercard me solenoid to hai he nhi

Is there any hard reset option

sirrr , why the code when i uploaded it , there was an error in the code which is the error wrote "keypad.h : no such file directory" whyyy ???

sir can I change the battery with an adapter with the same volts?

Bro urgent please help me how many libary we want to download i download liquid crycltal i2c.h Keypad.h Wire.h

what ur LCD library u download sir

sir can i ask another question ? why the coding when i connect the arduino , the error wrote "failed to connect to ESP32" did u used nodemcu too ?? please answer me T_T

why my solenoid isn't working?

Superb b sir

Sir, code link in discription is not opening

what library is the keypad sir ?

Thank you

Hello sir why when I upload the coding, it has error and it say no function to call liquidcrystal lcd, it has problem at 'lcd begin'

hii sir it's urgent 😫😫😫 please solve my problem while I am uploading it's showing no matching function for call to Liquidcrystal I2c

sir its 5v or 12v for the relay modul?

Me podrían ayudar con el código me marca un error en la página y no puedo obtenerlo

sir it's urgent 😢😭 please share the purchase link to buy the table cloth that mean the blue color baground please please please sir

Code link is not working can u plz send me the code

Can I use a Oled 128x32 What would I need to change in the code

Sir code is not opening

Bro come upload but lcd display showing empty because of y

which jumper wires are used m to m,f to f ,m to f

Sir can't open code

exit status 1 no matching function for call to 'LiquidCrystal_I2C::begin()' ITS SHOWING THIS ERROR

circuit diagram plzz

Hello sir can I get the coding of this project

the code wont work

Sir plz give circuit diagram

Aapne code nahi diya

why wont it work agaun? can you email me

Sir I am having problem. When I compile the codes this comes (fatal error : keypad.h:No such file or directory # include Keypad h... Sir I can contact you on Facebook.

Sir what is you mail id

Sir, code link in discription is not opening

Sir can't open code