Arduino sketch for a simplified "DuinoTag"

[Brenton Rowland]

int sensorPin = 2;
int senderPin = 3;
int triggerPin = 4;
int speakerPin = 12;
int blinkPin = 13;

int startBit = 2000;
int endBit = 3000;
int one = 1000;
int zero = 400;
int trigger;
boolean fired =false;
int ret[2];
int waitTime = 300;

int playerLine = 14;
int myCode = 1;
int myLevel = 1;
int maxShots = 6;
int maxHits = 6;
int myShots = 0;
int myHits = 0;

int maxLevel = 9;
int minLevel = 0;

int refPromote = 0;
int refDemote = 1;
int refReset = 2;
int refRevive = 3;

int replySucc = 14;
int replyFail = 15;

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); tone2(900*i, 200); digitalWrite(blinkPin, LOW); delay(200); } Serial.begin(9600); Serial.println("Ready: "); } void loop() { senseFire(); senseIR(); if (ret[0] != -1) { tone2(1000, 50); Serial.print("Who: "); Serial.print(ret[0]); Serial.print(" What: "); Serial.println(ret[1]); if (ret[0] >= playerLine) {
if (ret[1] == refPromote) { //This promotes you when you hit someone
if (myLevel < maxLevel) { Serial.println("PROMOTED!"); myLevel++; tone2(900, 50); tone2(1800, 50); tone2(2700, 50); } }else if (ret[1] == refDemote) { //This demotes you if you get hit if (myLevel > minLevel) {
Serial.println(“DEMOTED!”);
myLevel–;
}
tone2(2700, 50);
tone2(1800, 50);
tone2(900, 50);
}else if (ret[1] == refReset) { //This resets your ammo if you fire too many shots
Serial.println(“AMMO RESET!”);
myShots = maxShots;
tone2(900, 50);
tone2(450, 50);
tone2(900, 50);
tone2(450, 50);
tone2(900, 50);
tone2(450, 50);
}else if (ret[1] == refRevive) { //This revives you if you are hit
Serial.println(“REVIVED!”);
myShots = 0;
myHits = 0;
myLevel = 1;
tone2(900, 50);
tone2(1800, 50);
tone2(900, 50);
tone2(1800, 50);
tone2(900, 50);
tone2(800, 50);
}
}else {
if (ret[1] == replySucc) {
tone2(9000, 50);
tone2(450, 50);
tone2(9000, 50);
Serial.println(“SUCCESS!”);
}else if (ret[1] == replyFail) {
tone2(450, 50);
tone2(9000, 50);
tone2(450, 50);
Serial.println(“FAILED!”);
}
if (ret[1] <= maxLevel && ret[1] >= myLevel && myHits <= maxHits) { //This registers that you hit someone Serial.println("HIT!"); myHits--; tone2(9000, 50); tone2(900, 50); tone2(9000, 50); tone2(900, 50); } } } } void senseIR() { int who[4]; int what[4]; int endx; 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); endx =pulseIn(sensorPin, LOW); if (endx <= endBit) { Serial.print(endx); 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 {
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 {
Serial.println(“unknown action”);
ret[0] = -1;
return;
}
}
ret[1]=convert(what);
Serial.println(ret[1]);
return;
}

void tone2(int playTone, int duration) { //This enables the arduino to play a tone with each action
for (long i = 0; i < duration * 1000L; i += playTone * 2) { digitalWrite(speakerPin, HIGH); delayMicroseconds(playTone); digitalWrite(speakerPin, LOW); delayMicroseconds(playTone); } } 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() { //This senses when you fire the arduino
trigger = digitalRead(triggerPin);
if (trigger == LOW && fired == false) {
Serial.println(“Button Pressed”);
fired = true;
myShots++;
if (myHits <= maxHits && myShots > maxShots && random(1, 20) <= myShots) { //If you fire too many shots, the arduino will "self-destruct", not allowing you to fire any more shots until you reset the arduino 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"); } fired =false; } } void fireShot(int player, int level) { //This is the program that enables you to fire the shot int encoded[8]; digitalWrite(blinkPin, HIGH); for (int i=0; i<4; i++) { encoded[i] = player>>i & B1;
}
for (int i=4; i<8; i++) {
encoded[i] = level>>i & B1;
}
oscillationWrite(senderPin, startBit);
digitalWrite(senderPin, HIGH);
delayMicroseconds(waitTime);
for (int i=7; i>=0; i–) {
if (encoded[i] == 0) {
oscillationWrite(senderPin, zero);
} else {
oscillationWrite(senderPin, one);
}
digitalWrite(senderPin, HIGH);
delayMicroseconds(waitTime);
}
oscillationWrite(senderPin, endBit);
tone2(100, 5);
digitalWrite(blinkPin, LOW);
}

void oscillationWrite(int pin, int time) { //This sends the string of data
for(int i = 0; i <= time/26; i++) { digitalWrite(pin, HIGH); delayMicroseconds(13); digitalWrite(pin, LOW); delayMicroseconds(13); } } void selfDestruct() { //This makes the arduino self-destruct and force you to reset it myHits = maxHits+1; tone2(1000, 250); tone2(750, 250); tone2(500, 250); tone2(250,250); }

[Brenton Rowland]

Copy and Paste the code into a new Arduino sketch.

It is based on the DuinoTag Instructable here.

It uses pins:
2 for IR receive sensor input,
3 for IR LED sender output,
4 for the trigger button input,
12 for a buzzer output – to make simple beep noises
13 for an LED to show activity

Should be enough to get something working.
Then modify the code to use a sound module/amplifier/1000W subwoofer, add game modes, scoring etc..

[Brenton Rowland]

This was good demo code to test the basics of Infra Red tagging. It’s now 4 months on in Sept 2017 and Sccience Club LaserTag has new code in the File Downloads. Have a look in Projects to see our progress.

[Author]

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