Arduino Based RFID Door Lock - Make Your Own
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- Опубліковано 26 січ 2020
- In this video, I’ll be showing you how to build your own RFID door lock using an Arduino, an RFID sensor and a few other small components. This RFID lock will enable you to load a list of accepted tags to provide limited access through the door.
For a detailed write-up on the build and further description of the code and the circuit diagram, have a look at the full build through this link - www.the-diy-life.com/arduino-...
Parts List and Purchase Links:
Arduino Uno - amzn.to/2XwmXAa
Arduino Power Supply - amzn.to/2FJ8PcW
Breadboard & Jumpers (Optional) - amzn.to/2sKI7Oj
RC522 RFID Sensor - amzn.to/2vrQzD0
Micro Servo - amzn.to/380rddp
LEDs - amzn.to/3aJtEDg
Resistors - amzn.to/2O4s0SU
3D Printer & Filament (Optional for Lock) - amzn.to/2T07MgA
If you’ve got any suggestions for Arduino projects or tutorials, let me know in the comments section below. - Наука та технологія
at last! thank you. too many people show unluck but never how to relock! Awesome. thank you. subscribed
this is what i needed exactly to use my rfid and i searched many tutorials this is best and suitable. thanks a lot and keep it up!
Thanks Sanuka, glad it helped you out!
This is exactly what i wanted! Thanks a lot for adding the access feature for certain specific cards! Amazing video
cool pfp
It works Great! Awesome instructions!
Hi! I'm new to this and will be making this in the hopefully near future! If you could please make a video on the card itself and how to set your own ID code and make it yourself that would be amazing!
Hey . Did you manage to do that?
You deserve a sub thank you alot!!
thanks a lot it worked after a lot of try thank you once again !!!!!!!!!!!!!!!!!
Enjoyed alot! Thank you.
Thank you
This was very helpful
nice project!
a very helpful video
very good.
Code and 3d print files no longer available? I've started to tinker around with projects like these and would love to play with this, please help 🙏 🙂 scratch that I should've read the description better you sir are a Saint.
great!!! thank you for posting...
Thank you soo much
Great video. A different setup with 3 LEDs would be useful too, with the third LED flashing when something that is not a RFID tag is detected.
I don't think the RFID sensor can detect anything other than an RFID tag, so anything that is an RFID tag that isn't registered flashes red but anything else will just go undetected.
@@MichaelKlements Quite right, it would need a different setup with a presence sensor or something. I thought it could also help debug the setup, as I see that some people who tried it got zero LED or feedback, but then, there is no limit on improving this kind of setup, people who add a presence sensor would then want to add a camera to snap the unchipped intruder, then a buzzer to scare them away, etc. 😁
loved it i wish i could do this for my garden gate but i am a kid :(
Skill issue
Great video brother!
I wanna program a turnstile gate, any idea where i can find more info or help or...? Am really lost and idk what to do or where i should start looking
I'm new to this. i have watched some instructional videos including yours. this one was perfect. from what i have picked up, I'm a little stumped here now. how would one go about adding a push button to this circuit to cycle the servo motor separate from the RFID reader control?
You'd just need to add a pushbutton onto one of the Arduinos digital inputs and add a condition to the main loop in the code to move the servo if the pushbutton is on or off. The Arduino can choose to override the RFID input.
@@MichaelKlements could you also put a delay and re-lock the device after a set amount of time? I am looking at using this to keep my dog out but allow the cat to go through a door.
I reccomend you make the samething but with a relay instead of servo
Thanks Ajay, I'll have a look at doing this in a future video.
hi! thank you so much for the tutorial, however im having trouble getting the serial monitor to read and show the numbers of my cards
I added the .ZIP to the library but it said it had no existing library. Can you please tell how to fix?
Hi, great video! But i have an issue with reading the card. I checked the wiring so many times, I bought six of those RC522's, and none of them work.
When I connect the Arduino to the RC522 and open the Serial Monitor, I get the message:
"Firmware Version: 0x92 = v2.0"
When I unplug the RC522 and run the serial monitor, I get the message:
"Firmware Version: 0x0 = (unknown)
WARNING: Communication failure, is the MFRC522 properly connected?"
So this means the connection between the Arduino and the RC522 works, but still, with 6 different RC522's, I get absolutely nothing out of it. Maybe the code is not relevant anymore? I don't know what to do, I've already struggled for three days with this problem...
To who ever is using an arduino uno r3 and is experiencing problems with the card reader. Plug the rst pin which is on the sensor to the 5th pin on the arduino
Can you make it read from a longer range?
Hi Michael, does this work with NFC as well?
Can also open with Apple Watch or iphone?
Nice video, a piezo sounder would have been even better
Hi, where did you get the metal arm to attach to the servo? Or did you make it yourself? If so, do you have any resources that you could point me towards for making one? Thanks, video was super helpful!
It's just a standard servo push-rod and ball from Hobbyking, they're used to actuate the control surfaces on RC aircraft. Glad it helped!
@@MichaelKlements Thanks! New to this stuff so wasn't sure of the term.
No problem. You should be able to buy one off eBay, Hobbyking or a local hobby shop for quite cheap.
I like your design. Have you considered adding a keypad to this? A concept in security is 'something you have - the RFID tag, and something you know - a passcode'
Thanks PyroRob69. Yes, a keypad would be a nice addition. You'd have to get rid of the LEDs then though as there aren't enough IO pins for both. There are only 6 spare and you'd need 8 for the keypad.
@@MichaelKlements Unless the LCD was using I2C. Also, with the LCD, you could use single char's to do the same thing as your LED's do. You can place any char you want, in any place you want on that display.
Yes, an I2C LCD display would be a nice addition as well. You could then add the card/tag owners name to be displayed when a valid card/tag is read as well.
@@MichaelKlements I have found two I2C devices that would allow you to use a standard keypad with. One already has a keypad library written for it, but the other would require you to use bit banging and the Wire library. On the upside, the one that requires the Wire library can handle 16 pins instead of just 8, therefore you could control both the keypad and the RFID scanner with one I2C adapter.
Here is the one for 16 pins, and it uses the standard MCP23017 chip - www.amazon.com/Waveshare-MCP23017-Expansion-Interface-Expands/dp/B07P2H1NZG/
The other that someone has already written a library for is www.amazon.com/gp/product/B01ICN5JB6/
hi Micheal clementswhen I put the card in front of the rfid so that he reads it there is nothing happening help me please
I need to know how to get the medal rod to connect servo. Can You Add a Link? TY
Hello Michael , I would like to use this for one of my private lockers. The thing is that I want just the RFID board to be visible and on the outside of the door. How can i make sure that once the battery runs out it will not lock itself and that's it? Can i do it somehow?
I presume that it would be locked most of the time? Meaning that the battery would most likely run out while it is locked? You could either program in a voltage monitor which automatically unlocks and won’t re-lock if the battery gets low. Or a better option would be to put a tiny switch or push button on the outside as well which connects a backup battery when turned on. This backup battery only needs to be big enough to power up and unlock the door once. Some smart door locks which require power to actuate have small terminals for a 9V battery on the outside under a cover plate which can be accessed if the battery dies while locked.
will it require for another library for arduino?
When I open the Serial monitor and place the card near the scanner, nothing comes up as if the card isn't there. I'm using the cards that came with my RFID scanner and everything is hooked up correctly. Not sure why it isn't working.
Mejn you make good tutorials and its beatiful that you put the zip files and the code in the description can you make a video with the wemos d1 the homeautomation? I would like it to try it myself but im a beginner
I’ve never tried making anything with the Wemos D1, but I’ll look into it. On board WiFi would definitely make for some interesting home automation projects.
what Resistor did you used
Are the leds necessary and is there a premade lock design like the one used that could just be loaded onto the build plate? Also what kind of filament would be recommended? This is for a school project so if anybody has answers that would be great if you could share them 🫶 thank you
Place card/tag near reader...
great project... is there any chanse to use this code for more than 44 tags... I need it for like 100 tags... your can work with maximum 44 tags
can i use a 9v battery?
how can you make it when it detects, it opens. but when the detection ended it closes back automatically ?
Can u help me please I’m getting an error code for the rfid part iv done everything I’m supposed I just can’t figure out why it won’t work I plug it all in the rfid chip thing lights up an nothing happends then I try to upload an it saying failed any help or suggestions would be amazing
I'm wondering if I can use this to diy a pet door so it will lock when my cat goes near it? How close does the tag need to be to the sensor for it to read? And is there a way to make it so the lock stays open but when the tag is within a specific distance it will stay locked until the tag leaves the sensor range? Of course, making the locked position the default would also work if I put the tag on the dog, but that still leaves the question of how close it has to be to the sensor?
Hi Elizabeth,
You could certainly do what you’ve described with an RFID tag, but these particular ones need to be quite close to be read. Probably closer than what a pet would be able to get it unless you could figure out how to hang it so that it came within about 2-3cm from the read when the cat tries to go through the door. Different tags work on different frequencies and offer longer or shorter reading distances. The ones on credit cards for example need to be really close while ones used in vehicle tags can be read from around 5-10m away.
@@MichaelKlements awesome! I was starting to lose hope after doing some more research (I don't have any kind of experiencewith this kind of thing, but I do research for a living so I'm pretty determined to figure it out lol), but I'll look into the other types you mentioned! Thanks!
Can you give me of what does do i put or on how i connect may arduino kit ?
How i supposed to connect it
Thanks for it
How to connect it with battery in case black out occurs?
What are the resistors value?
Communication failure is the MFRC522 connected properly how to fix this error
Because phones have they're own NFC tags can I make this work with my phone by just finding its tag and adding it as the verified tag?
There are a number of different RFID frequencies and protocols and they're not all compatible with one and other. You could probably find a sensor which would enable you to read NFC tags from your phone, but its quite unlikely that you'd be able to do that with this sensor.
Br the rfid reader is upside down in the diagram can you correct it and send it too me
Can you use this to access or download other cards info? Like there are cards with certain info on them. Like name etc
As far as I know, these sensors will only pick up the ID number of the tag.
What ohm of resistor u used
Can you please tell me which RFID sketch we need to install from the library manager?
Please tell me quickly. As I have to make it as early as possible.
I leave my mark here:
I did not use this code but use this video as a reference
Hi again! I just bought a similar Rfid module, should the pins be soldered? It seems firm in the video, I tried to do this project and it did not work in my 1st try.
Yes it works best to solder them
@@MichaelKlements Alright, thanks!
Can you tell me how to download the RFID library in Arduino IDE.
www.arduino.cc/en/guide/libraries
How can I get the RFID.h library?
Hello can you upload please the code because youtube make an update and now you cant read the descripton thanks!
what resister is that? like what OHM...
Hello, i dont know which rfid library im supposed to include, do i need to change the code?
The rfid library is bundled with the sketch download, you just need to paste it into your Arduino IDE's libraries folder.
can you help it keeps on saying it has no thing called findcard what does that mean
libraries\RFID\RFID.cpp.o (symbol from plugin): In function `RFID::RFID(int, int)':
(.text+0x0): multiple definition of `RFID::RFID(int, int)
How do i fix?
how to access the lock from the other side of the door? like locking or unlocking from the inside
It depends on whether you want it to be secure on the inside as well. Most places would just have a push button on the inside to open the lock again. This lock stays open until you scan the tag again and then locks. So you lock and unlock it from the outside.
i downloaded your code but when i try and run it, it says, "(library file) RFID/RFID.h:22:10: fatal error: 'SoftwareSerial.h' file not found
#include ".
dude i have this same problem where in the code, it says that on the " //Wait for a tag to be placed near the reader: section,
exit status 1
'class RFID' has no member named 'findCard'; did you mean 'isCard'?
and if i change it to isCard, it still gives me errors, bro please update the code or give a fix cos its soooo annoying.
Do have every card it unique code, or can you set you custome code to those cards?
Each card has a unique ID. There is a way to reflash their ID numbers, but it is quite complicated. It’s preferred to be able to identify which of the cards unlocked the system.
what do you feed everything with?
With 12V through the Arduino's power input
How does the system identify the cards. Does the cards have a code in them
Each card has a digital "ID" which is identified by the tag reader.
where can i download the library
Any updated links for code, doesnt work for me
It finally worked, i just soldered the pins with the rfid module. Last question, is it okay to connect it with a 9volts external battery through DC?
Yes you can use a 9V battery, but it must be connected to the barrel jack on the Arduino so that it is regulated.
@@MichaelKlements Thank you! is it always safe to use 9V battery and connect it to the barrel jack of the arduino? I sometimes worry that some components might burn. Sorry I am new to this.
@@MichaelKlements And how would I know if it is not safe. I always worry that some parts such as led or rfid scanner would broke if I do a wrong power supply voltage.
As long as it's a 7-12V battery it'll be fine to connect to your Arduino's barrel jack. The Arduino regulates the voltage to 3.3V and 5V, just make sure that your sensor is connected to the correct supply voltage. Most (almost all) sensors that are made for tinkering with electronics are 5V compatible, there are however a few that run on 3.3V but will say so in the datasheet.
@@MichaelKlements Update: I tried connecting to to a 9V through the arduino jack but weird stuff keeps happening. When I scan the rfid with access, the led lights keeps on flashing and servo motor keeps on moving. But all seems well if it is connected to the computer.
do i need to download a library for this to work?
The library is packaged with the code download from my blog
Thx for the video, mine gives an error....
'class MFRC522' has no member named 'PCD_Init'
what have i done wrong?
Have you used the same library I've used?
Do i need 2 RFID sensors for both sides of the room (for example getting in my room and then closing the door the sensor would be outside)
You would usually just add a pushbutton to lock/unlock the door from the inside, unless you have a reason to restrict access in both directions.
@@MichaelKlements thanks
Whats the name of the arm thath connects the servo to the look
It's an RC aircraft pushrod or servo connection rod.
Sir serial moniter ???? Marks coming problem plz help sir
Heyy I put in the code and I am getting complication error: rfid.h no such file or directory
How I can edit your stl file to solidwork?
Can you teach me for my final year project
the link for the download of the code dont work for me, it open a pege end next it colsed
Is there a way to adapt this for two door locks on two doors.
Yeah you could use the same Arduino to open two locks with the same RFID card or different locks depending on which card is used.
ok got it
Is there a way to do this on the Arduino Mega 2560 R3?
Yes, you can use the code and pin layout as in this example. You'll just be wasting the additional IO on the Mega.
I can not install the .ZIP Library. It says multiple files found in the zip file top level.
How easy would it be to add the 16*2 Lcd module as a visual improvement?
That should be quite easy to do, there is enough IO available. I’d maybe suggest an I2C oled display rather?
@@MichaelKlements thanks, ill give it a try, looks more impressive than the lcd, great project.
Hello im trying to add lcd i2c to the code but i couldn't can someone help me asap pls ?
How would I replace the servo for an
Electromagnetic
You would need to add a relay to switch the circuit on and off.
Do you have to buy the wires separately?
Most modules don't come with jumpers so you'd need to buy them separately.
Report an error（'class RFID' has no member named 'findCard'; did you mean 'isCard'? ）what should I do
Can the tag be strong enough to unlock if the key is 5 feet away?
Not with these tags or readers but you get other RFID sensors that'll work a couple of meters away.
HEY THIS IS TRUE BUT IN THE CODE HOW DO YOU TRANSFER THE CODE AND THE RFID IS NOT ORANGE
How can I make coin operated door lock for toilets can you please explain?
my servo motors doesn't work, pls reply ASAP
Hi, thanks for making this video. I have a question, the tag doesn't seem to work, and I'm pretty sure the wires are correct because I checked a lot. Also there is a light on the RFID sensor so I think that's connected good too. And the code doesn't give any errors. The LED's don't do anything, but I don't know if that is just because the tag isn't working. Maybe I am really stupid and there is something obvious I was supposed to change in the code or in the wires to adjust it for a reason I don't know. I'm still pretty new to arduino so I still really hope there is an obvious solution. Hope you have time to help.
Hi Linde,
You shouldn't need to change anything in the code if you've wired it as per the diagram and you're using the same component. The LEDs should come on sequentially like in the video when you power it up, if this isn't happening then you've either got wiring problems to the LEDs or the SPI communication to the RFID sensor is failing - most likely because it's not connected correctly. Also try opening up the Serial monitor, does it display "Place card/tag near reader...", indicating that it's run through the setup function?
@@MichaelKlements Hi, I think the hardware is now correct, because when I open the SerialNumberRead he does recognise my tag and I can read the serial number. But then when I open the serial monitor in the final code, and I scan my tag it doesn't seem to recognise it at all. I am still a beginner so if there is an obvious thing I was suppossed to do that you didn't say I had to change in the code, I probably haven't done it. The only thing I now have changed are the serial numbers to grant acces to and I have added the library. Any idea why he does recognise the tag in the SerialNumberRead but not in the final RFID code? I also don't get a green LED light and nothing moves or happenes when I scan the tag.
@@linde1670 Me to, can you help please
@@phoenixtrimpe961 It still didn't work, I don't know what is wrong, I kind of gave up, I will look at it again next week, if I find something I'll let you know
@@linde1670 This was the exact same problem I too encounter .If you find out any solution let me know . I am too new to arduino
WHERE DO WE FIND THE SERIAL NUMBER FOR OUR RFID?
can i replace the servo with a relay
Yes, you'll just use a regular digital output rather than a PWM output.
i did what u did but not work can u tell whats problem plz ? it told me card found but did not give the id for card
I triedy RFID card but can't work properly access denied.
can i use this for selling
How long the battery last is it 6 volts
It depends what battery you're using. This was powered using a plug-in power supply.
My RFID doesn't have the thing to connect it to the Arduino. What can I do to connect it to the breadboard?
If you're talking about the black header pin strip, you'll need to solder this on to use it on a breadboard or with an Arduino