bacakecepatananginmotordcdanoptointerrupter

volatile int rpmcount = 0;
int rpm = 0;
unsigned long lastmillis = 0;
void setup(){
 Serial.begin(9600);
 attachInterrupt(0, rpm_fan, FALLING);
}
void loop(){
 if (millis() - lastmillis == 1000){
 detachInterrupt(0);
 Serial.print(analogRead(0));
 Serial.print(',');
 Serial.println(rpmcount);
 rpmcount = 0;
 lastmillis = millis();
 attachInterrupt(0, rpm_fan, FALLING);}
}

void rpm_fan(){
  rpmcount++;
}