Arduino Output Problem

Other Hardware Sensors
1

I am facing a total weird problem one set of code is running and other ain't. Kindly help

This code isn't working :confused:

int pin = 2;
void setup() {
  // put your setup code here, to run once:
  pinMode(pin, OUTPUT);
  digitalWrite(pin, LOW);
}
void loop() {
     // put your main code here, to run repeatedly:
 
}

This code is working

int pin = 2;
void setup() {
  // put your setup code here, to run once:
  pinMode(pin, OUTPUT);
  digitalWrite(pin, LOW);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(pin,HIGH);
  delay(5000);
  digitalWrite(pin,LOW);
  delay(5000);

}
2

How are you verifying that the first code isn't working?

3

by applying on digitial sensor

4

Give us more information, much more.

5

i am using the pin 2 to control the LED
in both codes the led is set digitialWrite(pin,LOW); but in one code the led is not setting off......it is should be off in both codes because it is set a low digitialWrite(pin,LOW);

6

imran403:
i am using the pin 2 to control the LED
in both codes the led is set digitialWrite(pin,LOW); but in one code the led is not setting off......it is should be off in both codes because it is set a low digitialWrite(pin,LOW);

Doesn't follow at all. The LED is on when current flows through it. That can be due to a pin being HIGH,
or it can be due to a pin being LOW, depending on how its wired up.

You haven't shown how you've wired it up...

7

here is the diagaram

Start Simulating.png
Start Simulating.png725×453 21.4 KB

Start Simulating.png
Start Simulating.png725×453 21.4 KB

8

With the first code, you never set the pin High to turn the LED on.

Add
digitalWrite (pin, HIGH);
instead of LOW
after the pinMode statement if you want LED to turn on.

9

Another Fritzy for the Hall of Shame!

You have to admire the handsome USB plug, presenting itself to the USB port.

10

@CrossRoads
its WOrking......Yep
Thanks!