Arduino Based RFID Door Lock 🔐 Project

Say goodbye to keys!
Let's make a simple RFID-based door lock system using Arduino!

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[renjithvs]

Great video.. Kudos to the clear explanation.
I would like to understand one point for my project (not door lock, of course). As in the video, when the RFID activates, we can give an output signal for 5 secs and turns off, right? My requirement is, upon activation, the reader must not sense again for a particular time, which can be provided by a 12V busy signal from the machine. So, once the busy signal is removed by machine, RFID reader is ready to scan again.. Could u pls advise.

[sascories]

Can i also add fingeprint sensor along with the RFID? If so will I need another relay to power the fingerprint module?

[phucbigby]

Can u make door lock by fingerprint sensor please?

[matejherich]

please tell me how can i connect lcd display without 12c module?

[jpolosr]

I can't find the library for the LiquidCristal by Marco Schwarts. What other can I use. I have all the wiring right but can not read any card nor my display shows nothing. Any ideas?

[Afiqakmal]

sir but im using arduino mega 2560 can i know that the coding is ruuning for my arduino or i need to change it.

[semperfi]

How​ can​ i​ add​ a​ new​ card​ and​ remove​ card

[dnyanopasna_]

And how to open it from inside the house