testaRelay

int rele1=2;
int rele2=12;
int rele3=14;
#define RELAY_TRIGGER HIGH
#define DELAY 3000

void relayON(int rele){
   Serial.print("relayON ");Serial.println(String(RELAY_TRIGGER));
   pinMode(rele, OUTPUT);
   digitalWrite(rele, RELAY_TRIGGER);
}
void relayOFF(int rele){
   Serial.print("relayOFF ");Serial.println(String(!RELAY_TRIGGER));
   pinMode(rele, OUTPUT);
   digitalWrite(rele, !RELAY_TRIGGER);
}
#define LED_GERAL 10
void setup() {
  // put your setup code here, to run once:
   delay(1000);
   Serial.begin(9600);
   delay(1000);
//   pinMode(LED_BUILTIN, OUTPUT);
//   digitalWrite(LED_BUILTIN, LOW);
   pinMode(LED_GERAL, OUTPUT);
   digitalWrite(LED_GERAL, HIGH);
   Serial.print("\n");
   relayOFF(rele1);
//   relayOFF(rele2);
//   relayOFF(rele3);
   delay(DELAY);
}

#define DELAY_INTER_RELAY 2000
void piscaRelay(int rele){
   // liga relay
   relayON(rele);
   delay(DELAY_INTER_RELAY);
   // desliga relay
   relayOFF(rele);
   delay(DELAY_INTER_RELAY);
}
void loop() {
   piscaRelay(rele1);
//   piscaRelay(rele2);
//   piscaRelay(rele3);
   delay(DELAY);
}