Hacktoberfestmine/Disinfectant at main · pythonites/Hacktoberfestmine · GitHub

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#define potentiometer  A0

#define echopin A2 // echo pin

#define trigpin A3 // Trigger pin

int read_ADC =0;

long set_time =0;

long rememTime;

long dis_cm;

long ultra_time;

int set_cm = 80;

int relay = 2; // Out for light

int flag=0;

void setup(){

Serial.begin(9600);// initialize serial communication at 9600 bits per second:

pinMode(potentiometer, INPUT);

pinMode (trigpin, OUTPUT);

pinMode (echopin, INPUT);

pinMode(relay, OUTPUT);

delay(1000); // Waiting for a while

}

void loop(){

//*************************

ultra_read();

//*************************

read_ADC = analogRead(potentiometer);

set_time = map(read_ADC, 0, 1023, 1000, 20000);

Serial.print("Dis :");Serial.println(dis_cm);

Serial.print("Time:");Serial.println(set_time);

if(dis_cm<set_cm && flag==0){flag=1;

digitalWrite(relay,HIGH);

Serial.println("Relay On");

rememTime = millis();

}

if(dis_cm>set_cm){flag=0;}

if((millis()- rememTime) > set_time){

digitalWrite(relay,LOW);

Serial.println("Relay Off");

}

delay(100);

}

//**********************ultra_read****************************

void ultra_read(){

digitalWrite(trigpin, LOW);

delayMicroseconds(2);

digitalWrite(trigpin, HIGH);

delayMicroseconds(10);

ultra_time = pulseIn (echopin, HIGH);

dis_cm =  ultra_time / 29 / 2;

}