I am making a bidirectional visitor counter using arduino. But the output on 16*2 display shows 0 1 0 1 0 1 0 1 0… when the output should be 0. Please help
`#include<LiquidCrystal.h>
LiquidCrystal lcd(13,12,11,10,9,8);
#define in 14
#define out 19
#define relay 2
int count=0;
void IN()
{
count++;
if(count>=10)
{
count=10;
}
lcd.clear();
lcd.print(“Person In Room:”);
lcd.setCursor(0,1);
lcd.print(count);
delay(1000);
}
void OUT()
{
count–;
if(count<=0)
{
count=0;
}
lcd.clear();
lcd.print(“Person In Room:”);
lcd.setCursor(0,1);
lcd.print(count);
delay(1000);
}
void setup()
{
lcd.begin(16,2);
lcd.print(“Visitor Counter”);
delay(2000);
pinMode(in, INPUT);
pinMode(out, INPUT);
pinMode(relay, OUTPUT);
lcd.clear();
lcd.print(“Person In Room:”);
lcd.setCursor(0,1);
lcd.print(count);
}
void loop()
{
if(digitalRead(in))
IN();
if(digitalRead(out))
OUT();
if(count<=0)
{
lcd.clear();
digitalWrite(relay, LOW);
lcd.clear();
lcd.print(“Nobody In Room”);
lcd.setCursor(0,1);
lcd.print(“Light Is Off”);
delay(200);
}
else
digitalWrite(relay, HIGH);
}`