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    NFC Ring Lock Box by Nairod785

    Ideas for using NFC Rings
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    • Nairod785
      Nairod785 last edited by Nairod785

      UPDATE !!!
      Aug 5, 2014
      TUTORIAL !
      http://www.instructables.com/id/NFC-Ring-Lock-Box/
      Here you are !
      Tell me if I need to change something.
      Maybe you want me to explain the sketch ?
      A video to show how it works in real time?

      28/05/2014
      Hello everyone!
      This thread is dedicated to the NFC Ring Lock Box by me, feel free to ask questions, I'd be happy to help you.
      Don't hesitate to check this thread frequently because I'll edit posts to add some text and pics ;)
      I'll try to be clear as possible despite english is not my first language.

      PICTURES

      Actually I received everything I needed to build it, just waiting for the ring which Lokki sent me in the context of Inventions.
      I am suppose to receive it in the next few days.

      Here is the list of what I'm using: (PM me if you want link for very cheap prices !)

      • Arduino Nano
      • PN532 Electro House NFC module
      • Wooden Box
      • Metal lock (for inside lock)
      • Converter Micro USB female to USB female
      • Servo SG90 (motor)
      • Battery 2600mAh
      • Round Rocker Switch

      Actually I'm working on the design of the box(woodburning and dye).
      It let me some time to think about the closing system(almost finished) and receiving the ring to test the software/hardware.

      29/05/2014

      How it works : The box is locked from the inside(NFC lock) and the outside(padlock). You need to open both lock to get access to the contents.
      I had the idea of a secret lock box when I saw this. But seriously? Copy his work and offer it as a gift?
      I had to create my own system. The first thing I noticed was the lack of free space in the box with his system: I wanted to hide it.
      So I put everything in the top of the box, it has 1cm of high, and everything fits perfectly.
      My system has to be self-sufficient, I added a battery(which can power and be charged at the same time, very important), and as little as possible -> Arduino Nano.
      We need a motion to open and close the lock system -> motor -> Servo SG90.
      It has a power switch, you power it when you need to open the box and unpower it when finish.
      It also has a micro usb female to charge the battery AND to edit the Arduino's sketch, if there's a problem.
      It also has a manual way to open the inside in case if nothing else works.
      On the upper face of the box I'll burn the wood (woodburnig) to indicate the location where we have to present the NFC Ring, where is the NFC Reader.

      Up to now I think that my system is complete, if you have comments or any ideas to improve it, please tell us.
      I'm not saying that is the best way to build a NFC lock box but that's how I see it.

      Requirements :

      • Software security/backdoor
      • Manual emergency
        To complete.

      Tutorial Steps :

      • Woodburning
      • Drill Holes
      • Dye the box
      • Try it with an NFC Ring
      • Stuck everything in place

      Next Edit : The inside lock system
      Arduino sketch and Arduino connections
      More pics

      1 Reply Last reply Reply Quote 3
      • Nairod785
        Nairod785 last edited by

        Any ideas ?

        1 Reply Last reply Reply Quote 0
        • Nairod785
          Nairod785 last edited by

          Guess what?
          Ring received!
          The dye is being dried.
          Just need to glue everything to the box ;)

          1 Reply Last reply Reply Quote 0
          • Nairod785
            Nairod785 last edited by

            1 Reply Last reply Reply Quote 1
            • Lafunamor
              Lafunamor Community Helper last edited by

              looks cool

              1 Reply Last reply Reply Quote 0
              • Nairod785
                Nairod785 last edited by

                The NFC Ring Lock Box if fully finished.
                Do you want me to make a video?

                1 Reply Last reply Reply Quote 1
                • Lokki
                  Lokki Community Helper last edited by

                  Yeah go fo it, show us the working item!

                  1 Reply Last reply Reply Quote 0
                  • Nairod785
                    Nairod785 last edited by Nairod785

                    Share
                    and activate subtitles

                    1 Reply Last reply Reply Quote 2
                    • Lokki
                      Lokki Community Helper last edited by

                      Excellent, that's great! Very cool!

                      1 Reply Last reply Reply Quote 0
                      • Nairod785
                        Nairod785 last edited by Nairod785

                        Here is my sketch

                        #include <Servo.h>
                        #include <Wire.h>
                        #include <PN532_I2C.h>
                        #include <PN532.h>
                        
                        PN532_I2C pn532i2c(Wire);
                        PN532 nfc(pn532i2c);
                        
                        Servo myservo;  // create servo object to control a servo
                        int pos=1; // variable to store the servo position
                        
                        void setup() {
                          nfc.begin();
                          nfc.SAMConfig(); // configure board to read RFID tags 
                        } 
                        
                        void loop() {
                          if(pos==1){
                            myservo.attach(3);  // attaches the servo on pin 3 to the servo object "Digital 3"
                            myservo.writeMicroseconds(2000);
                            pos=2;
                            delay(400);
                          }
                          if(pos==3){
                            myservo.attach(3);  // attaches the servo on pin 3 to the servo object "Digital 3"
                            myservo.writeMicroseconds(580);
                            pos=4;
                            delay(400);
                          }
                          if(pos==2){
                            myservo.detach();
                          }
                          if(pos==4){
                            myservo.detach();
                            delay(2000);
                          }
                          String ringUid;
                          boolean success;
                          uint8_t uid[] = {0, 0, 0, 0, 0, 0, 0};  // Buffer to store the returned UID
                          uint8_t uidLength; // Length of the UID (4 or 7 bytes depending on ISO14443A card type
                          success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, &uid[0], &uidLength);
                        
                          if (success & uidLength==7) {
                        
                            for (uint8_t i=0; i<7; i++){
                              ringUid += String(uid[i], HEX);
                            }
                            if (ringUid=="hexadecimal number of inlay n°1" || ringUid=="hexadecimal number of inlay n°2"){
                              if(pos!=4){
                                pos=3;
                              }
                              if(pos==4){
                                pos=1;
                              }
                            }
                          }
                        }
                        
                        1 Reply Last reply Reply Quote 0
                        • S
                          shama last edited by

                          Very cool.

                          1 Reply Last reply Reply Quote 0
                          • Nairod785
                            Nairod785 last edited by

                            I'll post a link of the instructable and the final video in the next few weeks!

                            1 Reply Last reply Reply Quote 1
                            • C
                              Chivo last edited by

                              This idea very much interests me. Slightly different use than what I have in mind, but this I dig. Well done and thanks for giving me a fall project to brainstorm on.

                              1 Reply Last reply Reply Quote 0
                              • Nairod785
                                Nairod785 last edited by

                                I'll release a Tutorial in few days... sory for being late

                                1 Reply Last reply Reply Quote 2
                                • Nairod785
                                  Nairod785 last edited by Nairod785

                                  TUTORIAL !
                                  http://www.instructables.com/id/NFC-Ring-Lock-Box/
                                  Here you are !
                                  Tell me if I need to change something.
                                  Maybe you want me to explain the sketch ?
                                  A video to show how it works in real time?

                                  1 Reply Last reply Reply Quote 2
                                  • Lokki
                                    Lokki Community Helper last edited by

                                    Lokks good @Nairod785!

                                    1 Reply Last reply Reply Quote 0
                                    • MrStein
                                      MrStein last edited by

                                      So cool! I really like this kind of project, great job :D

                                      1 Reply Last reply Reply Quote 0
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