Need help with my Duino Tag

Projects Programming
1

So i am making 2 laser tag guns for a school project and when my attempt at using lasers and photoresistors didnt work i found this tutorial that used IR and arduino IBM Developer I assembled 2 guns and uploaded the code provided however the guns did not recieve signals from one another. From what I understand this is because in order to avoid a gun recieving it's own signal they made it ignore it. Thus they both ignore the same signal. So would it work for me to change the signal of one gun and what it ignores. If so what would I have to change and to what. The reason i posted theis is because I'm really new to coding and the arduino and dont have the time to learn before my project due date in a few days. Any help/advice would be greatly appreciated.
Cheers

/*
* Giving Credit where Credit Is Due
*
* Portions of this code were derived from code posted in the Arduino forums by Paul Malmsten.
* You can find the original thread here: http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1176098434
*
* The Audio portion of the code was derived from the Melody tutorial on the Arduino wiki
* You can find the original tutorial here: http://arduino.cc/en/Tutorial/Melody
*/

int sensorPin  = 2;      // Sensor pin 1
int senderPin  = 3;      // Infrared LED on Pin 3
int triggerPin = 4;      // Pushbutton Trigger on Pin 4
int speakerPin = 12;     // Positive Lead on the Piezo
int blinkPin   = 13;     // Positive Leg of the LED we will use to indicate signal is received

int startBit   = 2000;   // This pulse sets the threshold for a transmission start bit
int endBit     = 3000;   // This pulse sets the threshold for a transmission end bit
int one        = 1000;   // This pulse sets the threshold for a transmission that represents a 1
int zero       = 400;    // This pulse sets the threshold for a transmission that represents a 0
int trigger;             // This is used to hold the value of the trigger read;
boolean fired  = false;  // Boolean used to remember if the trigger has already been read.
int ret[2];              // Used to hold results from IR sensing.
int waitTime = 300;     // The amount of time to wait between pulses

int playerLine = 14;     // Any player ID >= this value is a referee, < this value is a player;
int myCode     = 1;      // This is your unique player code;
int myLevel    = 1;      // This is your starting level;
int maxShots   = 6;      // You can fire 6 safe shots;
int maxHits    = 6;      // After 6 hits you are dead;
int myShots    = 0;      // You can fire 6 safe shots;
int myHits     = 0;      // After 6 hits you are dead;

int maxLevel   = 9;      // You cannot be promoted past level 9;
int minLevel   = 0;      // You cannot be demoted past level 0

int refPromote = 0;      // The refCode for promotion;
int refDemote  = 1;      // The refCode for demotion;
int refReset   = 2;      // The refCode for ammo reset;
int refRevive  = 3;      // The refCode for revival;

int replySucc  = 14;     // the player code for Success;
int replyFail  = 15;     // the player code for Failed;

void setup() {
  pinMode(blinkPin, OUTPUT);
  pinMode(speakerPin, OUTPUT);
  pinMode(senderPin, OUTPUT);
  pinMode(triggerPin, INPUT);
  pinMode(sensorPin, INPUT);
  randomSeed(analogRead(0));
  for (int i = 1;i < 4;i++) {
    digitalWrite(blinkPin, HIGH);
    playTone(900*i, 200);
    digitalWrite(blinkPin, LOW);
    delay(200);
  }

  Serial.begin(9600);
  Serial.println("Ready: ");
}

void loop() {
  senseFire();
  senseIR();
  
  if (ret[0] != -1) {
    playTone(1000, 50);
    Serial.print("Who: ");
    Serial.print(ret[0]);
    Serial.print(" What: ");
    Serial.println(ret[1]);
    if (ret[0] >= playerLine) {
      if (ret[1] == refPromote) {
        // Promote
        if (myLevel < maxLevel) {
          Serial.println("PROMOTED!");
          myLevel++;
          playTone(900, 50);
          playTone(1800, 50);
          playTone(2700, 50);
        }
      } else if (ret[1] == refDemote) {
        // demote
        if (myLevel > minLevel) {
          Serial.println("DEMOTED!");
          myLevel--;
        }
          playTone(2700, 50);
          playTone(1800, 50);
          playTone(900, 50);
      } else if (ret[1] == refReset) {
        Serial.println("AMMO RESET!");
        myShots = maxShots;
        playTone(900, 50);
        playTone(450, 50);
        playTone(900, 50);
        playTone(450, 50);
        playTone(900, 50);
        playTone(450, 50);
      } else if (ret[1] == refRevive) {
        Serial.println("REVIVED!");
        myShots = 0;
        myHits = 0;
        myLevel = 1;
        playTone(900, 50);
        playTone(1800, 50);
        playTone(900, 50);
        playTone(1800, 50);
        playTone(900, 50);
        playTone(800, 50);
      }
    } else {
      if (ret[1] == replySucc) {
        playTone(9000, 50);
        playTone(450, 50);
        playTone(9000, 50);
        Serial.println("SUCCESS!");        
      } else if (ret[1] == replyFail) {
        playTone(450, 50);
        playTone(9000, 50);
        playTone(450, 50);
        Serial.println("FAILED!");        
      }
      if (ret[1] <= maxLevel && ret[1] >= myLevel && myHits <= maxHits) {
        Serial.println("HIT!");
        myHits++;
        playTone(9000, 50);
        playTone(900, 50);
        playTone(9000, 50);
        playTone(900, 50);
      }
    }
  }
}

void senseIR() {
  int who[4];
  int what[4];
  int end;
  if (pulseIn(sensorPin, LOW, 50) < startBit) {
    digitalWrite(blinkPin, LOW);
    ret[0] = -1;
    return;
  }
  digitalWrite(blinkPin, HIGH);
  who[0]   = pulseIn(sensorPin, LOW);
  who[1]   = pulseIn(sensorPin, LOW);
  who[2]   = pulseIn(sensorPin, LOW);
  who[3]   = pulseIn(sensorPin, LOW);
  what[0]  = pulseIn(sensorPin, LOW);
  what[1]  = pulseIn(sensorPin, LOW);
  what[2]  = pulseIn(sensorPin, LOW);
  what[3]  = pulseIn(sensorPin, LOW);
  end      = pulseIn(sensorPin, LOW);
  if (end <= endBit) {
    Serial.print(end);
    Serial.println(" : bad end bit");
    ret[0] = -1;
    return;
  }
  Serial.println("---who---");
  for(int i=0;i<=3;i++) {
    Serial.println(who[i]);
    if(who[i] > one) {
      who[i] = 1;
    } else if (who[i] > zero) {
      who[i] = 0;
    } else {
      // Since the data is neither zero or one, we have an error
      Serial.println("unknown player");
      ret[0] = -1;
      return;
    }
  }
  ret[0]=convert(who);
  Serial.println(ret[0]);

  Serial.println("---what---");
  for(int i=0;i<=3;i++) {
    Serial.println(what[i]);
    if(what[i] > one) {
      what[i] = 1;
    } else if (what[i] > zero) {
      what[i] = 0;
    } else {
      // Since the data is neither zero or one, we have an error
      Serial.println("unknown action");
      ret[0] = -1;
      return;
    }
  }
  ret[1]=convert(what);
  Serial.println(ret[1]);
  return;
}

void playTone(int tone, int duration) {
  for (long i = 0; i < duration * 1000L; i += tone * 2) {
    digitalWrite(speakerPin, HIGH);
    delayMicroseconds(tone);
    digitalWrite(speakerPin, LOW);
    delayMicroseconds(tone);
  }
}

int convert(int bits[]) {
  int result = 0;
  int seed   = 1;
  for(int i=3;i>=0;i--) {
    if(bits[i] == 1) {
      result += seed;
    }
    seed = seed * 2;
  }
  return result;
}

void senseFire() {
  trigger = digitalRead(triggerPin);
  if (trigger == LOW && fired == false) {
    Serial.println("Button Pressed");
    fired = true;
    myShots++;
    if (myHits <= maxHits && myShots > maxShots && random(1,20) <= myShots) {
      Serial.println("SELF DESTRUCT");
      selfDestruct();
    } else if (myHits <= maxHits) {
      Serial.print("Firing Shot : ");
      Serial.println(myShots);
      fireShot(myCode, myLevel);
    }
  } else if (trigger == HIGH) {
    if (fired == true) {
      Serial.println("Button Released");
    }
    // reset the fired variable
    fired = false;
  }
}

void fireShot(int player, int level) {
  int encoded[8];
  digitalWrite(blinkPin, HIGH);
  for (int i=0; i<4; i++) {
    encoded[i] = player>>i & B1;   //encode data as '1' or '0'
  }
  for (int i=4; i<8; i++) {
    encoded[i] = level>>i & B1;
  }
  // send startbit
  oscillationWrite(senderPin, startBit);
  // send separation bit
  digitalWrite(senderPin, HIGH);
  delayMicroseconds(waitTime);
  // send the whole string of data
  for (int i=7; i>=0; i--) {
    if (encoded[i] == 0) {
      oscillationWrite(senderPin, zero);
    } else {
      oscillationWrite(senderPin, one);
    }
    // send separation bit
    digitalWrite(senderPin, HIGH);
    delayMicroseconds(waitTime);
  }
  oscillationWrite(senderPin, endBit);
  playTone(100, 5);
  digitalWrite(blinkPin, LOW);
}

void oscillationWrite(int pin, int time) {
  for(int i = 0; i <= time/26; i++) {
    digitalWrite(pin, HIGH);
    delayMicroseconds(13);
    digitalWrite(pin, LOW);
    delayMicroseconds(13);
  }
}

void selfDestruct() {
  myHits  = maxHits+1;
  playTone(1000, 250);
  playTone(750, 250);
  playTone(500, 250);
  playTone(250, 250);
}

Duino_Tag_Full.pde (7.99 KB)

2

(deleted)

3

That is an awful lot of code to illustrate that one IR receiver can not receive code from an IR sender. You need to get that fundamental problem resolved BEFORE building on that capability.

That said, the code does something. You did not say what it does. You expect it to do something. You did not say what that is.

The arrangement of the IR sender and the IR receiver should be sufficient to prevent the receiver on one end from receiving what the sender on that end sends. There is nothing that the code should have to do to ignore itself.

4

Okay ill do some more research. The thing that confuses me is that when i just use this code for only the sensor and shoot at it recieves and responds to it. But when i use the full code for sensor and emmiter it doesnt recieve it and respond. So i looked at the differences and treid to work out what might be casueing it but am at a loss. Code for sensor only

/*
* Giving Credit where Credit Is Due
*
* Portions of this code were derived from code posted in the Arduino forums by Paul Malmsten.
* You can find the original thread here: http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1176098434
*
* The Audio portion of the code was derived from the Melody tutorial on the Arduino wiki
* You can find the original tutorial here: http://arduino.cc/en/Tutorial/Melody
*/

int sensorPin  = 2;      // Sensor pin 1
int speakerPin = 12;     // Positive Lead on the Piezo
int blinkPin   = 13;     // Positive Leg of the LED we will use to indicate signal is received

int startBit   = 2000;   // This pulse sets the threshold for a transmission start bit
int one        = 1000;   // This pulse sets the threshold for a transmission that represents a 1
int zero       = 400;    // This pulse sets the threshold for a transmission that represents a 0

int ret[2];              // Used to hold results from IR sensing.

int playerLine = 14;     // Any player ID >= this value is a referee, < this value is a player;
int myCode     = 1;      // This is your unique player code;
int myLevel    = 1;      // This is your starting level;
int maxShots   = 6;      // You can fire 6 safe shots;
int maxHits    = 6;      // After 6 hits you are dead;
int myShots   = maxShots;// You can fire 6 safe shots;
int myHits    = maxHits; // After 6 hits you are dead;

int maxLevel   = 9;      // You cannot be promoted past level 9;
int minLevel   = 0;      // You cannot be demoted past level 0

int refPromote = 0;      // The refCode for promotion;
int refDemote  = 1;      // The refCode for demotion;
int refReset   = 2;      // The refCode for ammo reset;
int refRevive  = 3;      // The refCode for revival;

int replySucc  = 14;     // the player code for Success;
int replyFail  = 15;     // the player code for Failed;

void setup() {
  pinMode(blinkPin, OUTPUT);
  pinMode(speakerPin, OUTPUT);
  pinMode(sensorPin, INPUT);

  for (int i = 1;i < 4;i++) {
    digitalWrite(blinkPin, HIGH);
    playTone(900*i, 200);
    digitalWrite(blinkPin, LOW);
    delay(200);
  }

  Serial.begin(9600);
  Serial.println("Ready: ");
}

void loop() {
  senseIR();
  
  if (ret[0] != -1) {
    playTone(1000, 50);
    Serial.print("Who: ");
    Serial.print(ret[0]);
    Serial.print(" What: ");
    Serial.println(ret[1]);
    if (ret[0] >= playerLine) {
      if (ret[1] == refPromote) {
        // Promote
        if (myLevel < maxLevel) {
          Serial.println("PROMOTED!");
          myLevel++;
          playTone(900, 50);
          playTone(1800, 50);
          playTone(2700, 50);
        }
      } else if (ret[1] == refDemote) {
        // demote
        if (myLevel > minLevel) {
          Serial.println("DEMOTED!");
          myLevel--;
        }
          playTone(2700, 50);
          playTone(1800, 50);
          playTone(900, 50);
      } else if (ret[1] == refReset) {
        Serial.println("AMMO RESET!");
        myShots = maxShots;
        playTone(900, 50);
        playTone(450, 50);
        playTone(900, 50);
        playTone(450, 50);
        playTone(900, 50);
        playTone(450, 50);
      } else if (ret[1] == refRevive) {
        Serial.println("REVIVED!");
        myShots = maxShots;
        myHits = maxHits;
        myLevel = 1;
        playTone(900, 50);
        playTone(1800, 50);
        playTone(900, 50);
        playTone(1800, 50);
        playTone(900, 50);
        playTone(800, 50);
      }
    } else {
      if (ret[1] == replySucc) {
        playTone(9000, 50);
        playTone(450, 50);
        playTone(9000, 50);
        Serial.println("SUCCESS!");        
      } else if (ret[1] == replyFail) {
        playTone(450, 50);
        playTone(9000, 50);
        playTone(450, 50);
        Serial.println("FAILED!");        
      }
      if (ret[1] <= maxLevel && ret[1] >= myLevel && myHits > 0) {
        Serial.println("HIT!");
        myHits--;
        playTone(9000, 50);
        playTone(900, 50);
        playTone(9000, 50);
        playTone(900, 50);
      }
    }
  }
}

void senseIR() {
  int who[4];
  int what[4];
  while(pulseIn(sensorPin, LOW) < startBit) {
    digitalWrite(blinkPin, LOW);
  }
  digitalWrite(blinkPin, HIGH);
  who[0]   = pulseIn(sensorPin, LOW);
  who[1]   = pulseIn(sensorPin, LOW);
  who[2]   = pulseIn(sensorPin, LOW);
  who[3]   = pulseIn(sensorPin, LOW);
  what[0]  = pulseIn(sensorPin, LOW);
  what[1]  = pulseIn(sensorPin, LOW);
  what[2]  = pulseIn(sensorPin, LOW);
  what[3]  = pulseIn(sensorPin, LOW);

  Serial.println("---who---");
  for(int i=0;i<=3;i++) {
    Serial.println(who[i]);
    if(who[i] > one) {
      who[i] = 1;
    } else if (who[i] > zero) {
      who[i] = 0;
    } else {
      // Since the data is neither zero or one, we have an error
      Serial.println("unknown player");
      ret[0] = -1;
      return;
    }
  }
  ret[0]=convert(who);
  Serial.println(ret[0]);

  Serial.println("---what---");
  for(int i=0;i<=3;i++) {
    Serial.println(what[i]);
    if(what[i] > one) {
      what[i] = 1;
    } else if (what[i] > zero) {
      what[i] = 0;
    } else {
      // Since the data is neither zero or one, we have an error
      Serial.println("unknown action");
      ret[0] = -1;
      return;
    }
  }
  ret[1]=convert(what);
  Serial.println(ret[1]);
  return;
}


void playTone(int tone, int duration) {
  for (long i = 0; i < duration * 1000L; i += tone * 2) {
    digitalWrite(speakerPin, HIGH);
    delayMicroseconds(tone);
    digitalWrite(speakerPin, LOW);
    delayMicroseconds(tone);
  }
}

int convert(int bits[]) {
  int result = 0;
  int seed   = 1;
  for(int i=3;i>=0;i--) {
    if(bits[i] == 1) {
      result += seed;
    }
    seed = seed * 2;
  }
  return result;
}
5 
int ret[2];              // Used to hold results from IR sensing.

This might mean something to you. It means nothing to me. The array is not returned by any function. It is populated by senseIR().

Arrays are supposed to hold related things, like pin numbers. The values in ret seem to be related only in that the data came to the Arduino the same way. Ditch the array, and name the two variables with meaningful names.

Adding something to that code causes problems. You need to isolate the addition(s) that cause problems, so you can focus on what, specifically, causes the issue.

6

okay ill try that. But heres what the tutorial has to say about int ret[2];

Listing 3. Array to hold results of IR decoding
int ret[2]; // Used to hold results from IR sensing.
These variables won't make much sense until you get to the function that's used to decode the incoming data. Let's put that aside now, and put together the setup function. This function needs to set the modes of the various pins, then it should provide feedback to indicate the system is ready — a blink and a beep or two.
Setting the pin modes
First you need to set the pin modes, as shown in Listing 4. There is one input pin (pin 2) and two output pins (pin 12 and pin 13).
Listing 4. Setting the pin modes
void setup() {
pinMode(blinkPin, OUTPUT);
pinMode(speakerPin, OUTPUT);
pinMode(sensorPin, INPUT);

7

These variables won't make much sense

Well, it got that right. And wrong. They SHOULD make sense everywhere in the program. When they don't, the names are wrong, or the use of an array to hold unrelated things is wrong.