[WIP] NFC car starter by MrStein

Raymond

That's very cool. English would be great for everyone, but I can read French just as well. Keep it up! Can't wait for your next update ;) Lâche pas la patate!!!

MrStein

The code, with sleep mode and interrupt. Work fine with the board (you have to plug a 10Kohms resistor 0603 cms between the +5v and int1, it will be rectifed with another version)

http://fr.sourcepod.com/pwdatf37-45351

/*
 Code par MrSTEIN (mrstein(at)hotmail.fr)
 v1.0/ 01/10/2014
 compatible avec NFC starter V3.0

 configuration harware:
 interruptBRAKE 3
 BRAKE 4
 buzzer 5
 RelaisStarter 6
 RelaisContact_OFF 7  
 RelaisContact_ON 8
 LED 13    

 informations hardware:
 1flash: CONTACT
 2flash: STARTER
 1buzz: SLEEP
 2buzz: STOP
 */    

  #include <Wire.h>
  #include <PN532_I2C.h>
  #include <PN532.h>
  #include <avr/sleep.h>
  #include <avr/power.h>


//definition des clefs  
String CLEF1 = "xxxxxxxxxxxxx";
String CLEF2 = "xxxxxxxxxxxxx";

#define interRelais 500 // temps entre contact et starter
#define tempsStarter 500 // temps starter ON 

//definition des sorties, valable pour la v3  
#define interruptBRAKE 3
#define BRAKE 4
#define buzzer 5
#define RelaisStarter 6
#define RelaisContact_OFF 7  
#define RelaisContact_ON 8 
#define LED 13  

PN532_I2C pn532i2c(Wire);
PN532 nfc(pn532i2c);
boolean etatContact = false;
boolean etatBRAKE = false;


//*******************fonction buzzer
void fct_FLASH(int pulse){
  for(int i=0; i<pulse; i++){
  digitalWrite(LED, HIGH);
  delay(200);
  digitalWrite(LED, LOW);
  delay(200);
}
}  

//*******************fonction buzzer
void fct_BUZZ(int pulse){
  for(int i=0; i<pulse; i++){
  digitalWrite(buzzer, HIGH);
  delay(200);
  digitalWrite(buzzer, LOW);
  delay(200);
}
}

//*******************fonction contact
void fct_contact(){
fct_FLASH(1);
digitalWrite(RelaisContact_OFF, HIGH);
delay(500);
digitalWrite(RelaisContact_OFF, LOW);  
etatContact = true;
}
 
//*******************fonction starter
void fct_starter(){
fct_FLASH(2);
digitalWrite(RelaisStarter, HIGH);
delay(tempsStarter);
digitalWrite(RelaisStarter, LOW);
}

//*******************fonction STOP, interrupt sur BRAKE
void fct_STOP(){
delay(1000);
if(!digitalRead(BRAKE)){
fct_BUZZ(2); 
digitalWrite(RelaisContact_OFF, HIGH);
delay(500);
digitalWrite(RelaisContact_OFF, LOW); 
Serial.println("STOP");
etatBRAKE = true;
etatContact = false;

while(!digitalRead(BRAKE)){delay(500);}
etatBRAKE = false;
Serial.println("FREIN OFF");
}
else fct_DODO();
}

//*******************fonction lecture de tag
String fct_lecture(){
  String Received;
  boolean success;
  uint8_t IdReceived[] = { 0, 0, 0, 0, 0, 0, 0 }; 
  uint8_t Id_Length; 

if (success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, &IdReceived[0],&Id_Length)){
for (uint8_t i=0; i < Id_Length; i++)
 Received += String(IdReceived[i], HEX); 
return(Received);
}
else
return(0);
}

//*******************fonction MODE sleep
void fct_DODO(){
 delay(1000);
 fct_BUZZ(1); 
 Serial.println("ARDUINO entre en mode sleep");
attachInterrupt(1,REVEIL, LOW);
delay(100);
  set_sleep_mode(SLEEP_MODE_PWR_DOWN); 
  sleep_enable();
  sleep_mode();
Serial.println("ARDUINO reveil");
fct_STOP();
}

//*******************fonction reveil
void REVEIL(void){
detachInterrupt(1);
}

void setup(void) {
  pinMode(buzzer,OUTPUT);
  pinMode(RelaisStarter,OUTPUT);
  pinMode(RelaisContact_ON,OUTPUT);
  pinMode(RelaisContact_OFF,OUTPUT);  
  pinMode(LED,OUTPUT);
  digitalWrite(LED, LOW);
  digitalWrite(buzzer, LOW);
  pinMode(BRAKE,INPUT);  
  delay(100);
//if(!digitalRead(BRAKE))fct_STOP(); // en cas de reset forcé, securite
  Serial.begin(115200);
  Serial.println("start"); 
  nfc.begin();
  uint32_t versiondata = nfc.getFirmwareVersion(); 

  if (! versiondata) {
    Serial.println("erreur pn532");  
    while (1); // halt
}
  nfc.setPassiveActivationRetries(0xFF);
  nfc.SAMConfig();
Serial.println("CAR STARTER V1.0");  
}


void loop(void) {
String Received;
while(etatContact == false){
Serial.println("attente lecture pour contact"); 
Received=fct_lecture();

if ((Received == CLEF1 || Received == CLEF2)){  
Serial.println("Clef valide, contact");  
fct_contact();
delay(interRelais);
}
}

while(etatBRAKE == false){
Serial.println("attente lecture pour starter");   
if(digitalRead(BRAKE)) etatBRAKE = true;
Serial.println(digitalRead(BRAKE));
Received=fct_lecture();

if ((Received == CLEF1 || Received == CLEF2) ){ 
Serial.println("Clef valide, starter");
fct_starter();
}
}
delay(100);
if(etatBRAKE == true){
fct_DODO();
}
}

A video of the plugging in the car will come, maybe if I have some translation help I could make an instrutable.

edit: sorry, not a lot of comment (and in french), but I think it's not too difficult to understand.

Lafunamor

post your text on some collab tool in french and if I have some spare time I'll try to help you to translate it.

Techcaveman

Hey @MrStein this looks great! If I was still tech savvy like in high school I would love to do a home build! Seeing how I'm only a little tech savvy now, what's the odds of being able to buy one of these? I just got my hands on my NFC ring thanks @NFC-Ring-Team can't wait to integrate this into my day to day!

MrStein

You can make one with the eagle files if you know how solder the components (I will make a bill of material soon) ;)
Maybe I can give you a blank prototype board, but you still need to buy the components ;)

MrStein

here is the board finished:

Black jumper is for simulate the brake
blue&brown are supply
brown, blue & yellow/green are contact & starter.
I also make some videos for show how plug this device & how supply, bypass the immo,... (in french)
https://www.youtube.com/playlist?list=PLBiQyVl185A4OzemFMIH5aewKNF8k3Xg1
Part1: neiman connection
Part2: supply
Part3: bypass immo
Part4: the board explication & conception

Next video will be the brake connexion & global connection

DaStivi

Hi, any Update on this Project yet?

how do you unlock the doors of your car? did i missed this here anywhere?

i'm planning to implant an nfc tag in my hand... and really would like to unlock/start my car (Citroen) with the nfc tag too! :)

steve

MrStein

Hi steve !
Maybe a NFC ring is better than make an implant ;) A lot of implant are in 125khz, so my board cannot work at this frequency (it's 13.56Mhz-> NFC)
For the door I don't make any board but it's easy to make with the same board than the NFC starter one.

The starter project is finished for me, I need to make the last tutorial video (in french) and after that make a instructable.

Pierre

Lokki

I've got to agree with Pierre at the moment on implants - cool idea, but too difficult to upgrade and I don't think the tech is mature enough yet.

Laszlo

Hi,

there are 13.56MHz implants also

Lokki

Yes, they're available. Personally I don't think the technology is advanced far enough to warrant having a permanent implant.

MrStein

Well, I think nfc implant tag are only suitable for the animals identification..Not for the human.. But it's my opinion..

For the price, I have the same tag but in 125khz, I paid less than 1$ for one. I think this one is really expensive.

Techcaveman

@MrStein sorry for the very late reply. I would completely love a blank but being from the United states it wouldn't be very beneficial to send one. I would still love to buy one from the nfc store since they do have that in the US now. Maybe putting to together a kit for a build your own would be a good idea. With the added door unlock part that another person had mentioned. Just a thought.

This could be easier to make instructions for assembling for that then translating a complete build from scratch.

Would wiring into an old turn key be easier then a button start?

DaStivi

Any News on this Topic? Is There a buyable Kit or at least a pcb available?

MrStein

Here are the files :
http://www.partage-facile.com/0U65BW0G8V/atmega__v4.brd.html

Don't forget it's not a plug an play solution and you will need to make some operation for finish your NFC starter ;)

LoganFive

@MrStein I was wondering if the keyduimo can be powered off an "always powered" line iin my car and be low powered enough to not drain the battery?

MrStein

Hey Logan,
It's a good question, I currently make a tutorial for the doors opener and use a push button to start/stop the KeyDuino.
For the NFC starter, I use the temporary light (that allow 30s of supply to scan the ring/tag).

I don't know how long you can use a battery if you use like 150mA, but I think it's a bad idea to "always powered" something in your car ;)

How, just for your information, if you have any question/ rem related to keyduino; please sen them on the keyduino forum, so me and my friend can answer to your question :)
http://keyduino.forumsactifs.com/

Roman

@MrStein Excuse me, but where is the schema version 4? Links do not work.

MrStein

It works, you have to click on "téléchargement gratuit (vitesse NORMALE)" then wite the captcha and click on "télécharger ce fichier".
There are only the layout and not the schematics but I can upload both if you want.

Roman

@MrStein Je reçus une lettre , je vous remercie! Bien que pas entièrement compris dans le projet. Comment fonctionne l'appareil vérifie que le moteur démarre ?