please help me on this code.

serial monitor will stop displaying 4 pulsossssssssssssssssssssssssssssssssssssssssssss aftet a few tries.

#include int solenoidPin = 7; //This is the output pin on the Arduino we // Constants const int coinpin = 2; const int targetcents =20 ; int servoPin = 9; Servo servo; int angle = 0; // servo position in degrees

float metal, metall; int reading; int metalPin = A0; int metalPinn = A1;

// Variables volatile int pulse = 0; volatile int pulsee = 0; int pesos = 0;

// Setup void setup() { Serial.begin(9600); attachInterrupt(digitalPinToInterrupt(coinpin), coinInterrupt, RISING); // Servo motor/////// servo.attach(servoPin);

// put your setup code here, to run once: pinMode(solenoidPin, OUTPUT); //Sets the pin as an output

}

// Main loop void loop() {

reading = analogRead(metalPin); metal = (float)reading*100/1024.0; Serial.print("Metal in Proximity = "); Serial.println(metal); reading = analogRead(metalPinn); metall = (float)reading; Serial.print("Metall in Proximity = "); Serial.println(metall);

if (pulse >= targetcents) { pesos = pesos+1; pulse = pulse - targetcents; }

delay(10); switch(pulsee){ case 1: pulsee=0; break; case 4: digitalWrite(solenoidPin, HIGH); //Switch Solenoid ON delay(100); //Wait 1 Second digitalWrite(solenoidPin, LOW); //Switch Solenoid OFF delay(100); //Wait 1 Second pulsee=0; Serial.print(pulsee); Serial.println("4 pulsossssssssssssssssssssssssssssssssssssssssssss"); delay(10); break; }

if (pulse==2) { pesos=1; } Serial.print(pesos); Serial.println(" Pesos insertados"); delay(10);

if (pulse==4) { pesos=2; } Serial.print(pesos); Serial.println(" Pesos insertados"); delay(10);

if (pulse==10) { pesos=5; } Serial.print(pesos); Serial.println(" Pesos insertados"); delay(10);

delay(1000); if (pulse==20) { // scan from 0 to 180 degrees for(angle = 0; angle < 90; angle++) { servo.write(angle); delay(3); } // now scan back from 180 to 0 degrees for(angle = 90; angle >5; angle--) { servo.write(angle); delay(3); } }

}

// Interrupt void coinInterrupt(){ // Each time a pulse is sent from the coin acceptor, interrupt main loop to add 1 cent and flip on the LED pulse = pulse + 1; pulsee=pulsee+1; }