RFID Garage door opener

[codergirl56]

Hi @BartE - thanks for putting this together! It has been very helpful.

I am working on a project with two wireless MFRC522 modules and RFID Reader. I want to be able to read PICC cards with the RFID reader and send it the UID between the modules. So essentially a more bare version of the code you have written with the garage door opening code. I was wondering if you could help me out in simplifying the code to just reading the UID off the PICC cards and outputting that date between the RCF522 modules.

Thanks in advance.

[BartE]

@codergirl56 there are a number of examples in the MFRC522 library which might help you.
You can find them here: https://github.com/miguelbalboa/rfid

Please feel free to ask questions if the examples does not help you further

[codergirl56]

@BartE thanks for getting back to me. I've looked through the examples on the MFRC522 library. I think the main thing I'm struggling with is setting up and initializing the N24L01 module and the RFID on the same arduino uno. My plan is to have one N24L01 and RFID on one arduino module, and a second N24L01 on a second arduino. I want the RFID to read the UID off of PICC cards and be able to wirelessly transmit the UID between the N24L01 modules. I think it's simpler than the code you have written here, but I'm struggling to simplify the code you have to only what I need. Could you possibly walk through what each function in your program is used for? Thanks in advance.

[BartE]

@codergirl56 Oke i will give it a try:

Basic IO pin set up

void setup() {
        Serial.begin(BAUD);     // Initialize serial communications with the PC
        pinMode(GARAGEPIN, OUTPUT);     // Initialise in/output ports
        pinMode(SECONDRELAY, OUTPUT);     // Initialise in/output ports

This part initializes the SPI I/O pins used by the RFID reader so it release the SPI bus for thr NFR radio

        // Make sure MFRC will be disabled on the SPI bus
        pinMode(RST_PIN, OUTPUT);     
        digitalWrite(RST_PIN, LOW);
        pinMode(SS_PIN, OUTPUT);     
        digitalWrite(SS_PIN, LOW);

Init LED and button I/O-pin

        pinMode(LED_PIN, OUTPUT);
        digitalWrite(LED_PIN, LOW);
        // Setup the button
        pinMode(SWITCH_PIN, INPUT_PULLUP);

        // After setting up the button, setup debouncer
        debouncer.attach(SWITCH_PIN);
        debouncer.interval(5);

Init radion module

        // Init mysensors library
        gw.begin(incomingMessage, 5);
        gw.sendSketchInfo("RFID Garage", "1.2"); delay(RF_INIT_DELAY);
        
        // Register all sensors to gw (they will be created as child devices)
        gw.present(CHILD_ID_LOCK, S_LOCK);      delay(RF_INIT_DELAY);
        gw.present(CHILD_ID_LOCK2, S_LOCK);      delay(RF_INIT_DELAY);
        gw.present(CHILD_ID_ALARM, S_MOTION);   delay(RF_INIT_DELAY);

Read eeprom settings

        recallEeprom();

nit SPI bus for MFRC RFID sensor

        SPI.begin();            // Init SPI bus
        mfrc522.PCD_Init();     // Init MFRC522
        ShowReaderDetails();            // Show details of PCD - MFRC522 Card Reader details

        gw.send(lockArmMsg.set(armed));
        Serial.println(F("Init done..."));
}

void loop() {
        timer++;
        delay(HEARTBEAT);
        gw.process();
        debouncer.update();

        // Get the update value
        int switchValue = debouncer.read();
        if (switchValue != oldSwitchValue) {
          // Send in the new value
          Serial.print (F("Switch "));
          Serial.println (switchValue);
          
          if (switchValue && programmode) {
               lastTime     = millis() / 1000;
          }
          
          if (!switchValue && programmode && lastTime > 0) {
               if ( (millis() / 1000) - lastTime > 3) {
                    Serial.println(F("Reset all cards"));  
                    countValidCards  = 0;
                    blinkFast(50);
               } else {
                  Serial.println(F("Program off"));  
                  digitalWrite(LED_PIN, LOW);
                  programmode = false;
                  
                  storeEeprom();
               }
          }
          
          if (!switchValue)   {
              programTimer = 0;
          }
          oldSwitchValue = switchValue;
        }
        
        if (programmode && ((timer % (ONE_SEC / HEARTBEAT)) == 0 ))  {
            ledon = !ledon;
            digitalWrite(LED_PIN, ledon);
            programTimer++;

            // Stop program mode after 20 sec inactivity
            if (programTimer > PROG_WAIT)  {
               programmode = false;
               digitalWrite(LED_PIN, false);
               Serial.println(F("Program expired"));  
            }
        }
        
        if ((timer % (200 / HEARTBEAT)) == 0 )   {
             // Look for new cards
             if ( ! mfrc522.PICC_IsNewCardPresent()) {
                  if (releasecnt > 0)   {
                      releasecnt--;
                      if (!releasecnt)  {
                          olduid.size = 0;
                          Serial.println(F("release"));
                      }
                    }
            return;
            }
            releasecnt = 5;

Check if a RFID card is held at the RFID reader if not: skip the rest and start over with loop()

           // Select one of the cards
           if ( ! mfrc522.PICC_ReadCardSerial()) {
              return;
           }
    
           // Dump debug info about the card; PICC_HaltA() is automatically called
           //mfrc522.PICC_DumpToSerial(&(mfrc522.uid));

Check if this card is the same as the previous loop if not enter the IF loop

           if (!olduid.size || !sameUid(&(mfrc522.uid), &olduid))  {
                ShowCardData(&(mfrc522.uid));
                copyUid(&(mfrc522.uid), &olduid);
                if ( isValidCard(&olduid) )   {
                     OpenDoor(programmode);
                } else  {

Check if the master card was presented and the button was pressed enter program mode

                   if (sameUid(&(mfrc522.uid), &masterkey)) {
                       // Only switch in program mode when mastercard is found AND the program button is pressed
                       if (switchValue)  {
                         Serial.println(F("Program mode"));
                         programmode = true;
                         programTimer = 0;
                         lastTime     = 0;
                       } else {
                         OpenDoor2(programmode);
                       }
                   } else {

If not the master card and this card in not known and we're in program mode add this as a new card

                       if (programmode) {
                         Serial.println(F("new card"));
                         programTimer = 0;
                         
                         if (countValidCards < MAX_CARDS)
                         {
                            // Add card to list...
                            copyUid(&(mfrc522.uid), &validCards[countValidCards]);
                            countValidCards++;
                            blinkFast(15);
                         }
                       } else {
                         Serial.println(F("Invalid card"));
                         if (armed) {
                            gw.send(wrongMsg.set(1));
                            delay(2000);
                            gw.send(wrongMsg.set(0));
                         }
                       }
                   }
                }
           }
        }
}

These are support functions

void ShowCardData(MFRC522::Uid* uid) 
{
    Serial.print(F("Card UID:"));
    for (byte i = 0; i < uid->size; i++) {
        if(uid->uidByte[i] < 0x10) {
            Serial.print(F(" 0"));
        } else {
            Serial.print(F(" "));
                }
        Serial.print(uid->uidByte[i], HEX);
    } 
    Serial.println();
}

void copyUid(MFRC522::Uid* src, MFRC522::Uid* dest)
{
    dest->size = src->size;
    dest->sak  = src->sak;
    
    for (byte i = 0; i < src->size; i++) {
    dest->uidByte[i] = src->uidByte[i];
    }
}

bool sameUid(MFRC522::Uid* old, MFRC522::Uid* check)
{
    if (old->size != check->size) {
       return false;
    }
    for (byte i = 0; i < old->size; i++) {
        if (old->uidByte[i] != check->uidByte[i]) {
            return false;
        }
    }
    return true;
}

bool isValidCard(MFRC522::Uid* uid)
{
      for (byte i = 0; i < countValidCards; i++)  {
          if (validCards[i].size != uid->size)  {
              break;
          }
          for (int j = 0; j < uid->size; j++) {
              if (validCards[i].uidByte[j] != uid->uidByte[j])  {
                  break;
              }
              if (j == (uid->size - 1)) {  
                  return true;
              }
          }
      }
      return false;
}


void storeEeprom()
{
    byte address = 0;
    gw.saveState(address++, countValidCards);
    
    for (byte i = 0; i < countValidCards; i++) {
       gw.saveState(address++, validCards[i].size);
       for (byte j = 0; j < 10; j++) {
          gw.saveState(address++, validCards[i].uidByte[j]);
       } 
    }
}

void recallEeprom()
{
    byte address = 0;
    
    countValidCards = gw.loadState(address++);
    if (countValidCards > MAX_CARDS) {
       Serial.println(F("Not a valid EEPROM reading set to default"));
       countValidCards = 0;
       storeEeprom();
       return;
    }
    
    for (byte i = 0; i < countValidCards; i++)  {
       validCards[i].size = gw.loadState(address++);
       for (byte j = 0; j < 10; j++)  {
          validCards[i].uidByte[j] = gw.loadState(address++);
       } 
    }
  
}

void blinkFast(int times)
{
    for (int i = 0; i < times; i++) { 
       ledon = !ledon;
       digitalWrite(LED_PIN, ledon);
       delay(100);
    }
}

void OpenDoor(bool fakeOpen)
{
    Serial.println(F("Open door!"));
    gw.send(lockMsg.set(false));
    
    if (!fakeOpen) { 
      digitalWrite(LED_PIN, HIGH);
      digitalWrite(GARAGEPIN, HIGH); 
    }
    delay(1000);
    
    if (!fakeOpen) { 
      digitalWrite(GARAGEPIN, LOW); 
      digitalWrite(LED_PIN, LOW);
    }
    
    gw.send(lockMsg.set(true));
}

void OpenDoor2(bool fakeOpen)
{
    Serial.println(F("Open door 2!"));
    gw.send(lock2Msg.set(false));
    
    if (!fakeOpen) { 
      digitalWrite(LED_PIN, HIGH);
      digitalWrite(SECONDRELAY, HIGH); 
    }
    delay(1000);
    
    if (!fakeOpen) { 
      digitalWrite(SECONDRELAY, LOW); 
      digitalWrite(LED_PIN, LOW);
    }
    
    gw.send(lock2Msg.set(true));
}

void ShowReaderDetails() {
    // Get the MFRC522 software version
    byte v = mfrc522.PCD_ReadRegister(mfrc522.VersionReg);
    Serial.print(F("MFRC522 Software Version: 0x"));
    Serial.print(v, HEX);
    if (v == 0x91) {
        Serial.print(F(" = v1.0"));
        } else if (v == 0x92) {
        Serial.print(F(" = v2.0"));
        } else {
        Serial.print(F(" (unknown)"));
        }
    Serial.println("");
    
        // When 0x00 or 0xFF is returned, communication probably failed
    if ((v == 0x00) || (v == 0xFF)) {
        Serial.println(F("WARNING: Communication failure, is the MFRC522 properly connected?"));
    }
}


void incomingMessage(const MyMessage &message) 
{
   if (message.type == V_LOCK_STATUS) {
     // Change relay state
     if (!message.getBool())  {
        switch (message.sensor)
        {
           case CHILD_ID_LOCK:
              OpenDoor(false);
              break;
           case CHILD_ID_LOCK2:
              OpenDoor2(false);
              break;
        }
     }
  
     // Write some debug info
     Serial.print(F("Lock:  "));
     Serial.print(message.sensor);
     Serial.print(F(" status: "));
     Serial.println(message.getBool());
   }
   else 
   {
     if (message.type == V_ARMED)  {
       // Change relay state
       armed = message.getBool();
  
       // Write some debug info
       Serial.print(F("Arm status: "));
       Serial.println(message.getBool());
     }
     else
     {
       // Write some debug info
       Serial.print(F("Incoming msg type: "));
       Serial.print(message.type);
       Serial.print(F(" id: "));
       Serial.print(message.sensor);
       Serial.print(F(" content: "));
       Serial.println(message.getInt());
     }
   }
}

[Chakkie]

@BartE

Hi BartE, I have the same issue regarding tags lost after power off. I run the debug instruction using Serial print as you mentioned. I found out that the storeEeprom line did not run after closing the program mode. I think this is why the tags are lost after power cycle.

send: 210-210-0-0 s=255,c=3,t=15,pt=2,l=2,sg=0,st=ok:0
send: 210-210-0-0 s=255,c=0,t=17,pt=0,l=5,sg=0,st=ok:1.5.4
send: 210-210-0-0 s=255,c=3,t=6,pt=1,l=1,sg=0,st=ok:0
read: 0-0-210 s=255,c=3,t=6,pt=0,l=1,sg=0:M
sensor started, id=210, parent=0, distance=1
send: 210-210-0-0 s=255,c=3,t=11,pt=0,l=9,sg=0,st=ok:RFID Lock
send: 210-210-0-0 s=255,c=3,t=12,pt=0,l=3,sg=0,st=ok:1.1
send: 210-210-0-0 s=2,c=0,t=19,pt=0,l=0,sg=0,st=ok:
send: 210-210-0-0 s=1,c=0,t=1,pt=0,l=0,sg=0,st=ok:
RecallEeprom
MFRC522 Software Version: 0x92 = v2.0
send: 210-210-0-0 s=1,c=1,t=15,pt=2,l=2,sg=0,st=ok:1
Init done...
Switch 1
Card UID: 26 13 80 41
Invalid card
send: 210-210-0-0 s=1,c=1,t=16,pt=2,l=2,sg=0,st=ok:1
send: 210-210-0-0 s=1,c=1,t=16,pt=2,l=2,sg=0,st=ok:0
release
Card UID: xx xx xx xx
Program mode
release
Card UID: xx xx xx xx
new card
release
Program expired

Thanks

[Chakkie]

@BartE

I've just solved the issue regarding tags lost after power off.

Simply add the line "StoreEeprom();" after the program mode function

  if (programmode && ((timer % (ONE_SEC / HEARTBEAT)) == 0 ))  {
            ledon = !ledon;
            digitalWrite(LED_PIN, ledon);
            programTimer++;

            // Stop program mode after 20 sec inactivity
            if (programTimer > PROG_WAIT)  {
               programmode = false;
               digitalWrite(LED_PIN, false);
               Serial.println(F("Program expired"));  

               storeEeprom();
               Serial.println(F("Store Card to EEPROM"));  ```

[BartE]

@Chakkie sorry for the slow response (i was on a pre summer holiday)

Thx for analyzing this report. The fix you did made is not what i meant with program expired.

The idea is that you start program mode by pressing the program button and holding the master card.
And now one can add one or more new RFID cards and when your oke press the program button for a short period to END the program mode and store the new cards.

If you wait too long the program mode will expire and the new cards are NOT stored. Off course you can change this behavior by adding this line as you suggested.

[Michel - It]

hello to all guys, I noticed some problems, if the power goes away there is a flaw in the system. I modified the source as needed to me, now you turn the sensor on domoticz when you turn on and off when you turn off. I modified the project to create an alarm homemade I configured via lua script the motion sensors. I mounted on the bell so as to turn on and off when I go out or within the home. thank you all

[electromaker]

Hi Everyone,
I have tested this code http://etabetastudio.blogspot.it/2016/07/tutorial-lettore-rfid-rc522-arduino-idea.html to test RFID RC-522 with Arduino 2009 and all is ok, also to registred RFID card on EEPROM...
I hope to help uo...bye

[Mercury69]

Dear All,

I'm a newbie and I found in MySensors website the project for RFID Lock Sensors that use PN532 RFID Reader, but as I already have with me a RC-522 RFID reader, searching on the forum I found this post that I thinked it will suit my case.

I assembled the various hardware parts as described on first post, but when I copied the sketch code in my arduino IDE, I'm not able to get it work.

I get some error message that is not so clear for me.

It's seems the sketch is for a previous version of MySensors Library or Arduino IDE, but I'm not sure of this.

As I use Arduino IDE 1.6.12 that has included MySensors Library 2.0.0, is the Sketch you included in the first post already valid for that setup ?

It' will be possible to have a valid sketch working with new setup or eventually to know how to proceed to make the actual one working ?

Thank you in advance for your attention.

[Rod MacPherson]

@Mercury69
It was written prior to the MySensors 2.0 update.

You can convert pre- 2.0 sketches by following the instructions on https://forum.mysensors.org/topic/4276/converting-a-sketch-from-1-5-x-to-2-0-x

If you need a hand just post here with your question, I'll try to help, but it's really not too bad once you get started. I'm in the process of converting all of my code to 2.0 as well.

[Mercury69]

@Rod-MacPherson
Dear Rod, thank you for the suggestion you gave me.
Following the instruction you indicated me, I was able to make the sketch working with new MySensors 2.0 library.

Considering that I'm not a programmer, it was quite easy to make the sketch working.

Thank you again for your suggestion and off course thank you to BartE for the good original work he did.

If someone need new sketch working with library 2.0, feel free to ask me.

[Michel - It]

@Mercury69 you can post the sketch ?

[jeti]

@Mercury69 I would also love to have a look at your scetch!

[miro]

@Mercury69

Please, I would also like to see your code if it possible.

[cadet]

Hi Rod

Can you modify your code for 2.0 lib ?

Thank you
Andrey

[gohan]

Here is the new code for lib 2.0, but I am having some problem with initialization of rc522. I connected RST tu D7 and SDA to D8. Any idea what to look for?

/*
* ----------------------------------------------------------------------------
* This is a MFRC522 library example; see https://github.com/miguelbalboa/rfid
* for further details and other examples.
*
* NOTE: The library file MFRC522.h has a lot of useful info. Please read it.
*
* Released into the public domain.
* ----------------------------------------------------------------------------
* Example sketch/program showing how to read data from a PICC (that is: a RFID
* Tag or Card) using a MFRC522 based RFID Reader on the Arduino SPI interface.
*
* When the Arduino and the MFRC522 module are connected (see the pin layout
* below), load this sketch into Arduino IDE then verify/compile and upload it.
* To see the output: use Tools, Serial Monitor of the IDE (hit Ctrl+Shft+M).
* When you present a PICC (that is: a RFID Tag or Card) at reading distance
* of the MFRC522 Reader/PCD, the serial output will show the ID/UID, type and
* any data blocks it can read. Note: you may see "Timeout in communication"
* messages when removing the PICC from reading distance too early.
*
* If your reader supports it, this sketch/program will read all the PICCs
* presented (that is: multiple tag reading). So if you stack two or more
* PICCs on top of each other and present them to the reader, it will first
* output all details of the first and then the next PICC. Note that this
* may take some time as all data blocks are dumped, so keep the PICCs at
* reading distance until complete.
*
* Typical pin layout used:
* -----------------------------------------------------------------------------------------
*             MFRC522      Arduino       Arduino   Arduino    Arduino          Arduino
*             Reader/PCD   Uno           Mega      Nano v3    Leonardo/Micro   Pro Micro
* Signal      Pin          Pin           Pin       Pin        Pin              Pin
* -----------------------------------------------------------------------------------------
* RST/Reset   RST          9             5         D9         RESET/ICSP-5     RST
* SPI SS      SDA(SS)      10            53        D10        10               10
* SPI MOSI    MOSI         11 / ICSP-4   51        D11        ICSP-4           16
* SPI MISO    MISO         12 / ICSP-1   50        D12        ICSP-1           14
* SPI SCK     SCK          13 / ICSP-3   52        D13        ICSP-3           15
*/

/*
RFID Garagedoor opener by Bart Eversdijk

This sketch is to open a Garage door with an mifare RIFD-tag

For an Arduino Nano v3
Connection wiring :
- nrf24l01+ as descibed on the MySensors website
- MFRC522 reader/writer as described above EXCEPT for pin D9 and D10:  connect RST i.s.o. pin D9 to pin D7 and connect SDA(SS) i.s.o. pin D10 to pin D8
- LED with 470ohm resistor between GMD and pin A3
- push button between GND and pin D5
- 5v relays coil between GND and  pin D4 -> switch pins of the relays should be connected in parallel with your garage door push button.

Features:
This project can record up to 18 RFID-"tags"
These card IDs are stored in to EEPROM by keeping them next to the RFID reader when the system in program mode. (Slow blinking LED) When a card is accepted as new card the LED will blink fast for a short time.
To keep the master-tags (choose your own) next to the RFID reader when pressing the push button. To clear all cards (except the master card) press the push button in program mode for 6 seconds. The LED will now fast blink for a couple of seconds.

Your garage your can be opened by keep a registered RFID tag next to the reader or by clicking the open icon on lock node presented by this plugin.
By by-passing the alarm node presented by this plug in the RFID will be temporarily disabled.
When an incorrect (not registered) RFID tag is scanned the alarm is triggered to detect illegal scan attempts

*/ 
#include <MySensors.h>
#include <SPI.h>
#include <MFRC522.h> 
#include <Bounce2.h>

#define RF_INIT_DELAY   125
#define ONE_SEC         1000
#define MAX_CARDS       18
#define PROG_WAIT       10
#define HEARTBEAT       10
#define BAUD            115200

/*Pin definitions*/
#define LED_PIN         A3
#define GARAGEPIN       4
#define SWITCH_PIN      5
#define RST_PIN		7		//  MFRC 
#define SS_PIN		8		//  MFRC 

MFRC522      mfrc522(SS_PIN, RST_PIN);	// Create MFRC522 instance
MFRC522::Uid olduid;
MFRC522::Uid masterkey = { 10,{ 0,0,0,0, 0,0,0,0, 0,0 },  0 };

byte       countValidCards = 0;
MFRC522::Uid validCards[MAX_CARDS];

void       ShowCardData(MFRC522::Uid* uid);
bool       sameUid(MFRC522::Uid* old, MFRC522::Uid* check);
void       copyUid(MFRC522::Uid* src, MFRC522::Uid* dest);
bool       isValidCard(MFRC522::Uid* uid);
int        releasecnt = 0;

#define    CHILD_ID_ALARM    1
#define    CHILD_ID_LOCK     2
Bounce     debouncer = Bounce();

int        oldSwitchValue = -1;
int        switchValue = 0;
long       timer = -1;
bool       programmode = false;
bool       ledon;
int        programTimer = 0;
bool       armed = true;
unsigned long lastTime = 0;

MyMessage  lockMsg(CHILD_ID_LOCK, V_LOCK_STATUS);
MyMessage  lockArmMsg(CHILD_ID_ALARM, V_ARMED);
MyMessage  wrongMsg(CHILD_ID_ALARM, V_TRIPPED);

void setup() {
	Serial.begin(BAUD);		// Initialize serial communications with the PC
	pinMode(GARAGEPIN, OUTPUT);     // Initialise in/output ports

									// Make sure MFRC will be disabled on the SPI bus
	pinMode(RST_PIN, OUTPUT);
	digitalWrite(RST_PIN, LOW);
	pinMode(SS_PIN, OUTPUT);
	digitalWrite(SS_PIN, LOW);

	pinMode(LED_PIN, OUTPUT);
	digitalWrite(LED_PIN, LOW);
	// Setup the button
	pinMode(SWITCH_PIN, INPUT);
	// Activate internal pull-up
	digitalWrite(SWITCH_PIN, HIGH);

	// After setting up the button, setup debouncer
	debouncer.attach(SWITCH_PIN);
	debouncer.interval(5);

	// Init mysensors library
	
	sendSketchInfo("RFID Garage", "1.1"); delay(RF_INIT_DELAY);

	// Register all sensors to gw (they will be created as child devices)
	present(CHILD_ID_LOCK, S_LOCK);      delay(RF_INIT_DELAY);
	present(CHILD_ID_ALARM, S_MOTION);   delay(RF_INIT_DELAY);

	recallEeprom();

	// Init MFRC RFID sensor
	SPI.begin();			// Init SPI bus
	mfrc522.PCD_Init();		// Init MFRC522
	ShowReaderDetails();	        // Show details of PCD - MFRC522 Card Reader details

	send(lockArmMsg.set(armed));
	Serial.println(F("Init done..."));
}

void loop() {
	timer++;
	delay(HEARTBEAT);
	debouncer.update();

	// Get the update value
	int switchValue = debouncer.read();
	if (switchValue != oldSwitchValue) {
		// Send in the new value
		Serial.print(F("Switch "));
		Serial.println(switchValue);

		if (switchValue && programmode) {
			lastTime = millis() / 1000;
		}

		if (!switchValue && programmode && lastTime > 0) {
			if ((millis() / 1000) - lastTime > 3) {
				Serial.println(F("Reset all cards"));
				countValidCards = 0;
				blinkFast(50);
			}
			else {
				Serial.println(F("Program off"));
				digitalWrite(LED_PIN, LOW);
				programmode = false;

				storeEeprom();
			}
		}

		if (!switchValue) {
			programTimer = 0;
		}
		oldSwitchValue = switchValue;
	}

	if (programmode && ((timer % (ONE_SEC / HEARTBEAT)) == 0)) {
		ledon = !ledon;
		digitalWrite(LED_PIN, ledon);
		programTimer++;

		// Stop program mode after 20 sec inactivity
		if (programTimer > PROG_WAIT) {
			programmode = false;
			digitalWrite(LED_PIN, false);
			Serial.println(F("Program expired"));
		}
	}

	if ((timer % (200 / HEARTBEAT)) == 0) {
		// Look for new cards
		if (!mfrc522.PICC_IsNewCardPresent()) {
			if (releasecnt > 0) {
				releasecnt--;
				if (!releasecnt) {
					olduid.size = 0;
					Serial.println(F("release"));
				}
			}
			return;
		}
		releasecnt = 5;

		// Select one of the cards
		if (!mfrc522.PICC_ReadCardSerial()) {
			return;
		}

		// Dump debug info about the card; PICC_HaltA() is automatically called
		//mfrc522.PICC_DumpToSerial(&(mfrc522.uid));
		if (!olduid.size || !sameUid(&(mfrc522.uid), &olduid)) {
			ShowCardData(&(mfrc522.uid));
			copyUid(&(mfrc522.uid), &olduid);
			if (isValidCard(&olduid)) {
				OpenDoor(programmode);
			}
			else {

				if (sameUid(&(mfrc522.uid), &masterkey)) {
					// Only switch in program mode when mastercard is found AND the program button is pressed
					if (switchValue) {
						Serial.println(F("Program mode"));
						programmode = true;
						programTimer = 0;
						lastTime = 0;
					}
				}
				else {
					if (programmode) {
						Serial.println(F("new card"));
						programTimer = 0;

						if (countValidCards < MAX_CARDS)
						{
							// Add card to list...
							copyUid(&(mfrc522.uid), &validCards[countValidCards]);
							countValidCards++;
							blinkFast(15);
						}
					}
					else {
						Serial.println(F("Invalid card"));
						if (armed) {
							send(wrongMsg.set(1));
							delay(2000);
							send(wrongMsg.set(0));
						}
					}
				}
			}
		}
	}
}

void ShowCardData(MFRC522::Uid* uid) {
	Serial.print(F("Card UID:"));
	for (byte i = 0; i < uid->size; i++) {
		if (uid->uidByte[i] < 0x10) {
			Serial.print(F(" 0"));
		}
		else {
			Serial.print(F(" "));
		}
		Serial.print(uid->uidByte[i], HEX);
	}
	Serial.println();
}

void copyUid(MFRC522::Uid* src, MFRC522::Uid* dest)
{
	dest->size = src->size;
	dest->sak = src->sak;

	for (byte i = 0; i < src->size; i++) {
		dest->uidByte[i] = src->uidByte[i];
	}
}

bool sameUid(MFRC522::Uid* old, MFRC522::Uid* check)
{
	if (old->size != check->size) {
		return false;
	}
	for (byte i = 0; i < old->size; i++) {
		if (old->uidByte[i] != check->uidByte[i]) {
			return false;
		}
	}
	return true;
}

bool isValidCard(MFRC522::Uid* uid)
{
	for (byte i = 0; i < countValidCards; i++) {
		if (validCards[i].size != uid->size) {
			break;
		}
		for (int j = 0; j < uid->size; j++) {
			if (validCards[i].uidByte[j] != uid->uidByte[j]) {
				break;
			}
			if (j == (uid->size - 1)) {
				return true;
			}
		}
	}
	return false;
}


void storeEeprom()
{
	byte address = 0;
	saveState(address++, countValidCards);

	for (byte i = 0; i < countValidCards; i++) {
		saveState(address++, validCards[i].size);
		for (byte j = 0; j < 10; j++) {
			saveState(address++, validCards[i].uidByte[j]);
		}
	}
}

void recallEeprom()
{
	byte address = 0;

	countValidCards = loadState(address++);
	if (countValidCards > MAX_CARDS) {
		Serial.println(F("Not a valid EEPROM reading set to default"));
		countValidCards = 0;
		storeEeprom();
		return;
	}

	for (byte i = 0; i < countValidCards; i++) {
		validCards[i].size = loadState(address++);
		for (byte j = 0; j < 10; j++) {
			validCards[i].uidByte[j] = loadState(address++);
		}
	}

}

void blinkFast(int times)
{
	for (int i = 0; i < times; i++) {
		ledon = !ledon;
		digitalWrite(LED_PIN, ledon);
		delay(100);
	}
}

void OpenDoor(bool fakeOpen)
{
	Serial.println(F("Open door!"));
	send(lockMsg.set(false));

	if (!fakeOpen) {
		digitalWrite(LED_PIN, HIGH);
		digitalWrite(GARAGEPIN, HIGH);
	}
	delay(1000);

	if (!fakeOpen) {
		digitalWrite(GARAGEPIN, LOW);
		digitalWrite(LED_PIN, LOW);
	}

	send(lockMsg.set(true));
}

void ShowReaderDetails() {
	// Get the MFRC522 software version
	byte v = mfrc522.PCD_ReadRegister(mfrc522.VersionReg);
	Serial.print(F("MFRC522 Software Version: 0x"));
	Serial.print(v, HEX);
	if (v == 0x91) {
		Serial.print(F(" = v1.0"));
	}
	else if (v == 0x92) {
		Serial.print(F(" = v2.0"));
	}
	else {
		Serial.print(F(" (unknown)"));
	}
	Serial.println("");

	// When 0x00 or 0xFF is returned, communication probably failed
	if ((v == 0x00) || (v == 0xFF)) {
		Serial.println(F("WARNING: Communication failure, is the MFRC522 properly connected?"));
	}
}


void incomingMessage(const MyMessage &message)
{
	if (message.type == V_LOCK_STATUS) {
		// Change relay state
		if (!message.getBool()) {
			OpenDoor(false);
		}

		// Write some debug info
		Serial.print(F("Lock status: "));
		Serial.println(message.getBool());
	}
	else
	{
		if (message.type == V_ARMED) {
			// Change relay state
			armed = message.getBool();

			// Write some debug info
			Serial.print(F("Arm status: "));
			Serial.println(message.getBool());
		}
		else
		{
			// Write some debug info
			Serial.print(F("Incoming msg type: "));
			Serial.print(message.type);
			Serial.print(F(" id: "));
			Serial.print(message.sensor);
			Serial.print(F(" content: "));
			Serial.println(message.getInt());
		}
	}
}

[BartE]

@gohan the MIFARE chip needs to be disabled from the SPI bus before the radio is initialized

so put this piece of code in the before() function

void before() {
	// Make sure MFRC is disabled from the SPI bus
	pinMode(RST_PIN, OUTPUT);
	digitalWrite(RST_PIN, LOW);
	pinMode(SS_PIN, OUTPUT);
	digitalWrite(SS_PIN, LOW);
}

The MySensors library will iniitialize the MyS before the setup() function but after the before()

these lines

sendSketchInfo("RFID Garage", "1.1"); delay(RF_INIT_DELAY);
// Register all sensors to gw (they will be created as child devices)
present(CHILD_ID_LOCK, S_LOCK);      delay(RF_INIT_DELAY);
present(CHILD_ID_ALARM, S_MOTION);   delay(RF_INIT_DELAY);

Should be part of

void presentation() {
     sendSketchInfo("RFID Garage", "1.1"); delay(RF_INIT_DELAY);
     // Register all sensors to gw (they will be created as child devices)
     
     present(CHILD_ID_LOCK, S_LOCK);      delay(RF_INIT_DELAY);
     present(CHILD_ID_ALARM, S_MOTION);   delay(RF_INIT_DELAY);
}

and the function:

void incomingMessage(const MyMessage &message) 

should be renamed to

void receive(const MyMessage &message)

[gohan]

It didn't change much, here is the log

0 MCO:BGN:INIT NODE,CP=RNNNA--,VER=2.1.1
3 MCO:BGN:BFR
4 TSM:INIT
5 TSF:WUR:MS=0
13 TSM:INIT:TSP OK
14 TSM:INIT:STATID=4
16 TSF:SID:OK,ID=4
18 TSM:FPAR
59 TSF:MSG:SEND,4-4-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
803 TSF:MSG:READ,0-0-4,s=255,c=3,t=8,pt=1,l=1,sg=0:0
808 TSF:MSG:FPAR OK,ID=0,D=1
2067 TSM:FPAR:OK
2068 TSM:ID
2069 TSM:ID:OK
2071 TSM:UPL
2075 TSF:MSG:SEND,4-4-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=OK:1
2082 TSF:MSG:READ,0-0-4,s=255,c=3,t=25,pt=1,l=1,sg=0:1
2087 TSF:MSG:PONG RECV,HP=1
2089 TSM:UPL:OK
2092 TSM:READY:ID=4,PAR=0,DIS=1
2135 !TSF:MSG:SEND,4-4-0-0,s=255,c=3,t=15,pt=6,l=2,sg=0,ft=0,st=NACK:0100
4143 TSF:MSG:SEND,4-4-0-0,s=255,c=0,t=17,pt=0,l=5,sg=0,ft=1,st=OK:2.1.1
4152 TSF:MSG:SEND,4-4-0-0,s=255,c=3,t=6,pt=1,l=1,sg=0,ft=0,st=OK:0
4250 TSF:MSG:READ,0-0-4,s=255,c=3,t=6,pt=0,l=1,sg=0:M
4261 TSF:MSG:SEND,4-4-0-0,s=255,c=3,t=11,pt=0,l=11,sg=0,ft=0,st=OK:RFID Garage
4272 TSF:MSG:SEND,4-4-0-0,s=255,c=3,t=12,pt=0,l=3,sg=0,ft=0,st=OK:1.1
4406 TSF:MSG:SEND,4-4-0-0,s=2,c=0,t=19,pt=0,l=0,sg=0,ft=0,st=OK:
4539 TSF:MSG:SEND,4-4-0-0,s=1,c=0,t=1,pt=0,l=0,sg=0,ft=0,st=OK:
4670 MCO:REG:REQ
4674 TSF:MSG:SEND,4-4-0-0,s=255,c=3,t=26,pt=1,l=1,sg=0,ft=0,st=OK:2
4685 TSF:MSG:READ,0-0-4,s=255,c=3,t=27,pt=1,l=1,sg=0:1
4690 MCO:PIM:NODE REG=1
4692 MCO:BGN:STP
MFRC522 Software Version: 0x0 (unknown)
WARNING: Communication failure, is the MFRC522 properly connected?
4755 TSF:MSG:SEND,4-4-0-0,s=1,c=1,t=15,pt=1,l=1,sg=0,ft=0,st=OK:1
Init done...
4761 MCO:BGN:INIT OK,TSP=1
Switch 1

Here is also the code with the changes you suggested

/*
* ----------------------------------------------------------------------------
* This is a MFRC522 library example; see https://github.com/miguelbalboa/rfid
* for further details and other examples.
*
* NOTE: The library file MFRC522.h has a lot of useful info. Please read it.
*
* Released into the public domain.
* ----------------------------------------------------------------------------
* Example sketch/program showing how to read data from a PICC (that is: a RFID
* Tag or Card) using a MFRC522 based RFID Reader on the Arduino SPI interface.
*
* When the Arduino and the MFRC522 module are connected (see the pin layout
* below), load this sketch into Arduino IDE then verify/compile and upload it.
* To see the output: use Tools, Serial Monitor of the IDE (hit Ctrl+Shft+M).
* When you present a PICC (that is: a RFID Tag or Card) at reading distance
* of the MFRC522 Reader/PCD, the serial output will show the ID/UID, type and
* any data blocks it can read. Note: you may see "Timeout in communication"
* messages when removing the PICC from reading distance too early.
*
* If your reader supports it, this sketch/program will read all the PICCs
* presented (that is: multiple tag reading). So if you stack two or more
* PICCs on top of each other and present them to the reader, it will first
* output all details of the first and then the next PICC. Note that this
* may take some time as all data blocks are dumped, so keep the PICCs at
* reading distance until complete.
*
* Typical pin layout used:
* -----------------------------------------------------------------------------------------
*             MFRC522      Arduino       Arduino   Arduino    Arduino          Arduino
*             Reader/PCD   Uno           Mega      Nano v3    Leonardo/Micro   Pro Micro
* Signal      Pin          Pin           Pin       Pin        Pin              Pin
* -----------------------------------------------------------------------------------------
* RST/Reset   RST          9             5         D9         RESET/ICSP-5     RST
* SPI SS      SDA(SS)      10            53        D10        10               10
* SPI MOSI    MOSI         11 / ICSP-4   51        D11        ICSP-4           16
* SPI MISO    MISO         12 / ICSP-1   50        D12        ICSP-1           14
* SPI SCK     SCK          13 / ICSP-3   52        D13        ICSP-3           15
*/

/*
RFID Garagedoor opener by Bart Eversdijk

This sketch is to open a Garage door with an mifare RIFD-tag

For an Arduino Nano v3
Connection wiring :
- nrf24l01+ as descibed on the MySensors website
- MFRC522 reader/writer as described above EXCEPT for pin D9 and D10:  connect RST i.s.o. pin D9 to pin D7 and connect SDA(SS) i.s.o. pin D10 to pin D8
- LED with 470ohm resistor between GMD and pin A3
- push button between GND and pin D5
- 5v relays coil between GND and  pin D4 -> switch pins of the relays should be connected in parallel with your garage door push button.

Features:
This project can record up to 18 RFID-"tags"
These card IDs are stored in to EEPROM by keeping them next to the RFID reader when the system in program mode. (Slow blinking LED) When a card is accepted as new card the LED will blink fast for a short time.
To keep the master-tags (choose your own) next to the RFID reader when pressing the push button. To clear all cards (except the master card) press the push button in program mode for 6 seconds. The LED will now fast blink for a couple of seconds.

Your garage your can be opened by keep a registered RFID tag next to the reader or by clicking the open icon on lock node presented by this plugin.
By by-passing the alarm node presented by this plug in the RFID will be temporarily disabled.
When an incorrect (not registered) RFID tag is scanned the alarm is triggered to detect illegal scan attempts

*/
// Enable debug prints
#define MY_DEBUG
#define MY_NODE_ID 4
// Enable and select radio type attached
#define MY_RADIO_NRF24
#define MY_RF24_CHANNEL	10 
#include <MySensors.h>
#include <SPI.h>
#include <MFRC522.h> 
#include <Bounce2.h>

#define RF_INIT_DELAY   125
#define ONE_SEC         1000
#define MAX_CARDS       18
#define PROG_WAIT       10
#define HEARTBEAT       10
#define BAUD            115200

/*Pin definitions*/
#define LED_PIN         A3
#define GARAGEPIN       4
#define SWITCH_PIN      5
#define RST_PIN		7		//  MFRC 
#define SS_PIN		8		//  MFRC 

MFRC522      mfrc522(SS_PIN, RST_PIN);	// Create MFRC522 instance
MFRC522::Uid olduid;
MFRC522::Uid masterkey = { 4,{ 0xC6,0x35,0x5D,0x8E},  0 };

byte       countValidCards = 0;
MFRC522::Uid validCards[MAX_CARDS];

void       ShowCardData(MFRC522::Uid* uid);
bool       sameUid(MFRC522::Uid* old, MFRC522::Uid* check);
void       copyUid(MFRC522::Uid* src, MFRC522::Uid* dest);
bool       isValidCard(MFRC522::Uid* uid);
int        releasecnt = 0;

#define    CHILD_ID_ALARM    1
#define    CHILD_ID_LOCK     2
Bounce     debouncer = Bounce();

int        oldSwitchValue = -1;
int        switchValue = 0;
long       timer = -1;
bool       programmode = false;
bool       ledon;
int        programTimer = 0;
bool       armed = true;
unsigned long lastTime = 0;

MyMessage  lockMsg(CHILD_ID_LOCK, V_LOCK_STATUS);
MyMessage  lockArmMsg(CHILD_ID_ALARM, V_ARMED);
MyMessage  wrongMsg(CHILD_ID_ALARM, V_TRIPPED);

void before() {
	// Make sure MFRC is disabled from the SPI bus
	pinMode(RST_PIN, OUTPUT);
	digitalWrite(RST_PIN, LOW);
	pinMode(SS_PIN, OUTPUT);
	digitalWrite(SS_PIN, LOW);
}

void presentation() {
	sendSketchInfo("RFID Garage", "1.1"); delay(RF_INIT_DELAY);
	// Register all sensors to gw (they will be created as child devices)

	present(CHILD_ID_LOCK, S_LOCK);      delay(RF_INIT_DELAY);
	present(CHILD_ID_ALARM, S_MOTION);   delay(RF_INIT_DELAY);
}

void setup() {
	Serial.begin(BAUD);		// Initialize serial communications with the PC
	pinMode(GARAGEPIN, OUTPUT);     // Initialise in/output ports

									// Make sure MFRC will be disabled on the SPI bus
	/*pinMode(RST_PIN, OUTPUT);
	digitalWrite(RST_PIN, LOW);
	pinMode(SS_PIN, OUTPUT);
	digitalWrite(SS_PIN, LOW);*/

	pinMode(LED_PIN, OUTPUT);
	digitalWrite(LED_PIN, LOW);
	// Setup the button
	pinMode(SWITCH_PIN, INPUT);
	// Activate internal pull-up
	digitalWrite(SWITCH_PIN, HIGH);

	// After setting up the button, setup debouncer
	debouncer.attach(SWITCH_PIN);
	debouncer.interval(5);

	// Init mysensors library
	
	/*sendSketchInfo("RFID Garage", "1.1"); delay(RF_INIT_DELAY);

	// Register all sensors to gw (they will be created as child devices)
	present(CHILD_ID_LOCK, S_LOCK);      delay(RF_INIT_DELAY);
	present(CHILD_ID_ALARM, S_MOTION);   delay(RF_INIT_DELAY);*/

	recallEeprom();

	// Init MFRC RFID sensor
	SPI.begin();			// Init SPI bus
	mfrc522.PCD_Init();		// Init MFRC522
	ShowReaderDetails();	        // Show details of PCD - MFRC522 Card Reader details

	send(lockArmMsg.set(armed));
	Serial.println(F("Init done..."));
}

void loop() {
	timer++;
	delay(HEARTBEAT);
	debouncer.update();

	// Get the update value
	int switchValue = debouncer.read();
	if (switchValue != oldSwitchValue) {
		// Send in the new value
		Serial.print(F("Switch "));
		Serial.println(switchValue);

		if (switchValue && programmode) {
			lastTime = millis() / 1000;
		}

		if (!switchValue && programmode && lastTime > 0) {
			if ((millis() / 1000) - lastTime > 3) {
				Serial.println(F("Reset all cards"));
				countValidCards = 0;
				blinkFast(50);
			}
			else {
				Serial.println(F("Program off"));
				digitalWrite(LED_PIN, LOW);
				programmode = false;

				storeEeprom();
			}
		}

		if (!switchValue) {
			programTimer = 0;
		}
		oldSwitchValue = switchValue;
	}

	if (programmode && ((timer % (ONE_SEC / HEARTBEAT)) == 0)) {
		ledon = !ledon;
		digitalWrite(LED_PIN, ledon);
		programTimer++;

		// Stop program mode after 20 sec inactivity
		if (programTimer > PROG_WAIT) {
			programmode = false;
			digitalWrite(LED_PIN, false);
			Serial.println(F("Program expired"));
		}
	}

	if ((timer % (200 / HEARTBEAT)) == 0) {
		// Look for new cards
		if (!mfrc522.PICC_IsNewCardPresent()) {
			if (releasecnt > 0) {
				releasecnt--;
				if (!releasecnt) {
					olduid.size = 0;
					Serial.println(F("release"));
				}
			}
			return;
		}
		releasecnt = 5;

		// Select one of the cards
		if (!mfrc522.PICC_ReadCardSerial()) {
			return;
		}

		// Dump debug info about the card; PICC_HaltA() is automatically called
		//mfrc522.PICC_DumpToSerial(&(mfrc522.uid));
		if (!olduid.size || !sameUid(&(mfrc522.uid), &olduid)) {
			ShowCardData(&(mfrc522.uid));
			copyUid(&(mfrc522.uid), &olduid);
			if (isValidCard(&olduid)) {
				OpenDoor(programmode);
			}
			else {

				if (sameUid(&(mfrc522.uid), &masterkey)) {
					// Only switch in program mode when mastercard is found AND the program button is pressed
					if (switchValue) {
						Serial.println(F("Program mode"));
						programmode = true;
						programTimer = 0;
						lastTime = 0;
					}
				}
				else {
					if (programmode) {
						Serial.println(F("new card"));
						programTimer = 0;

						if (countValidCards < MAX_CARDS)
						{
							// Add card to list...
							copyUid(&(mfrc522.uid), &validCards[countValidCards]);
							countValidCards++;
							blinkFast(15);
						}
					}
					else {
						Serial.println(F("Invalid card"));
						if (armed) {
							send(wrongMsg.set(1));
							delay(2000);
							send(wrongMsg.set(0));
						}
					}
				}
			}
		}
	}
}

void ShowCardData(MFRC522::Uid* uid) {
	Serial.print(F("Card UID:"));
	for (byte i = 0; i < uid->size; i++) {
		if (uid->uidByte[i] < 0x10) {
			Serial.print(F(" 0"));
		}
		else {
			Serial.print(F(" "));
		}
		Serial.print(uid->uidByte[i], HEX);
	}
	Serial.println();
}

void copyUid(MFRC522::Uid* src, MFRC522::Uid* dest)
{
	dest->size = src->size;
	dest->sak = src->sak;

	for (byte i = 0; i < src->size; i++) {
		dest->uidByte[i] = src->uidByte[i];
	}
}

bool sameUid(MFRC522::Uid* old, MFRC522::Uid* check)
{
	if (old->size != check->size) {
		return false;
	}
	for (byte i = 0; i < old->size; i++) {
		if (old->uidByte[i] != check->uidByte[i]) {
			return false;
		}
	}
	return true;
}

bool isValidCard(MFRC522::Uid* uid)
{
	for (byte i = 0; i < countValidCards; i++) {
		if (validCards[i].size != uid->size) {
			break;
		}
		for (int j = 0; j < uid->size; j++) {
			if (validCards[i].uidByte[j] != uid->uidByte[j]) {
				break;
			}
			if (j == (uid->size - 1)) {
				return true;
			}
		}
	}
	return false;
}


void storeEeprom()
{
	byte address = 0;
	saveState(address++, countValidCards);

	for (byte i = 0; i < countValidCards; i++) {
		saveState(address++, validCards[i].size);
		for (byte j = 0; j < 10; j++) {
			saveState(address++, validCards[i].uidByte[j]);
		}
	}
}

void recallEeprom()
{
	byte address = 0;

	countValidCards = loadState(address++);
	if (countValidCards > MAX_CARDS) {
		Serial.println(F("Not a valid EEPROM reading set to default"));
		countValidCards = 0;
		storeEeprom();
		return;
	}

	for (byte i = 0; i < countValidCards; i++) {
		validCards[i].size = loadState(address++);
		for (byte j = 0; j < 10; j++) {
			validCards[i].uidByte[j] = loadState(address++);
		}
	}

}

void blinkFast(int times)
{
	for (int i = 0; i < times; i++) {
		ledon = !ledon;
		digitalWrite(LED_PIN, ledon);
		delay(100);
	}
}

void OpenDoor(bool fakeOpen)
{
	Serial.println(F("Open door!"));
	send(lockMsg.set(false));

	if (!fakeOpen) {
		digitalWrite(LED_PIN, HIGH);
		digitalWrite(GARAGEPIN, HIGH);
	}
	delay(1000);

	if (!fakeOpen) {
		digitalWrite(GARAGEPIN, LOW);
		digitalWrite(LED_PIN, LOW);
	}

	send(lockMsg.set(true));
}

void ShowReaderDetails() {
	// Get the MFRC522 software version
	byte v = mfrc522.PCD_ReadRegister(mfrc522.VersionReg);
	Serial.print(F("MFRC522 Software Version: 0x"));
	Serial.print(v, HEX);
	if (v == 0x91) {
		Serial.print(F(" = v1.0"));
	}
	else if (v == 0x92) {
		Serial.print(F(" = v2.0"));
	}
	else {
		Serial.print(F(" (unknown)"));
	}
	Serial.println("");

	// When 0x00 or 0xFF is returned, communication probably failed
	if ((v == 0x00) || (v == 0xFF)) {
		Serial.println(F("WARNING: Communication failure, is the MFRC522 properly connected?"));
	}
}


void receive(const MyMessage &message)
{
	if (message.type == V_LOCK_STATUS) {
		// Change relay state
		if (!message.getBool()) {
			OpenDoor(false);
		}

		// Write some debug info
		Serial.print(F("Lock status: "));
		Serial.println(message.getBool());
	}
	else
	{
		if (message.type == V_ARMED) {
			// Change relay state
			armed = message.getBool();

			// Write some debug info
			Serial.print(F("Arm status: "));
			Serial.println(message.getBool());
		}
		else
		{
			// Write some debug info
			Serial.print(F("Incoming msg type: "));
			Serial.print(message.type);
			Serial.print(F(" id: "));
			Serial.print(message.sensor);
			Serial.print(F(" content: "));
			Serial.println(message.getInt());
		}
	}
}

[BartE]

@gohan did you try running the MRRC522 demo application only?

So eliminating all MySensors stuff. To check the wiring.(make sure the pin 7 an 8 definition are correct.)