//constant value which will not change: const int PTT = 6; const int REL1 = 2; const int REL2 = 3; const int REL3 = 4; const int REL4 = 5;

//values which will change: int PTTState = 0; int PTTPushCounter = 0; int lastPTTState = 0;

unsigned long previousMillis = 0; // will store last time a relay was updated. unsigned long currentMillis = 0; unsigned long timeLastPush = 0; //Millisek. since last time PTT was pressed.. unsigned long timeOutPTT = 10000; // Timeout in milliseconds

DFRobot_LCD lcd(16,2); // Type of LCD display set 16 characters and 2 lines.

void setup() { // initializing lcd lcd.init(); // start serial port for LCD Serial.begin(9600); Serial.println("PTT READY"); lcd.setCursor(0,0);

//Pin configuration as connected by the schematic pinMode(PTT,INPUT); pinMode(REL1,OUTPUT); pinMode(REL2,OUTPUT); pinMode(REL3,OUTPUT); pinMode(REL4,OUTPUT); Serial.begin(9600); Serial.println("PTT READY"); }

void loop() { // read the PTT input pin: PTTState = digitalRead(PTT);

// compare the PTTState to its previous state if (PTTState != lastPTTState && lastPTTState == 0) { //If changed PTT state AND lastPTTState = 0, if ((millis() - timeLastPush) > timeOutPTT ) { //If timeout-limit for PTT reached: timeLastPush = millis(); //Set new timecouter start now, PTTPushCounter = 0; //Set PTT counter to 0. } } // if the state has changed, increment the counter if (PTTState == HIGH) { // if the current state is HIGH then the PTT went from off to on: PTTPushCounter++; Serial.println("PTT PUSHED"); Serial.print("NUMBER OF PTT PUSHES: "); Serial.println(PTTPushCounter); }

// Delay a little bit to avoid bouncing delay(50);

// save the current state as the last state, for next time through the loop lastPTTState = PTTState;

if (PTTPushCounter %4 == 3) { lcd.clear(); lcd.setCursor(3,0); lcd.print("RELAY 1 ON!"); digitalWrite(REL1, HIGH); }

if (PTTPushCounter %6== 5) { lcd.clear(); lcd.setCursor(3,0); lcd.print("RELAY 2 ON!"); digitalWrite(REL2,HIGH); } if (PTTPushCounter %8== 7) { lcd.clear(); lcd.setCursor(3,0); lcd.print("RELAY 3 ON!"); digitalWrite(REL3,HIGH);
} if (PTTPushCounter %10== 9) { lcd.clear(); lcd.setCursor(3,0); lcd.print("RELAY 4 ON!"); digitalWrite(REL4,HIGH); }

timeLastPush=millis();

if ((timeLastPush - previousMillis) >= 600000) { // saves the last time we turned the relay on/off lcd.clear(); lcd.setCursor(0,0); lcd.print("ALL RELAYS OFF!"); digitalWrite(REL1,LOW); digitalWrite(REL2,LOW); digitalWrite(REL3,LOW); digitalWrite(REL4,LOW);

previousMillis = millis(); Serial.println(previousMillis);

} }