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- unsigned long comparativo = 0;
- unsigned long intervalo = 3L * 1000L;
- void setup() {
- }
- void loop() {
- unsigned long tempo = millis();
- if(val <= 300){
- Serial.print("NULO ";);
- lcd.print("NULO ";) ;
- Serial.println(val);
- digitalWrite(ativaSensor, HIGH);
- comparativo=tempo;
- } else{
- digitalWrite(ativaSensor, LOW);
- }
- if (tempo - comparativo >intervalo){
- digitalWrite(ativaSensor, LOW);
- }
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