simple LED circuit is not working

Projects General Guidance
1

Hi all,

I was trying to light up LED using arduino where my circuit is connected as below.
But the LED does not light up, even I have change the orientation.
I am using a 220ohm resistor, digital pin 7 and my code is:

const int LEDPin = 7;

void setup() {

Serial.begin(9600);//initialize serial window

pinMode(LEDPin,OUTPUT);

}

void loop() {

digitalWrite(LEDPin,HIGH);
}

I am not sure what is wrong with my circuit, perhaps the electronics components is faulty??

Arduino LED.jpg
Arduino LED.jpg780×1040 98.4 KB

2

Turned the LED the wrong way?

3

i try to turn the LED orientation, still not working

4

Try moving the resistor from pin 7 to the 5V pin. If it doesn't light up then the LED is faulty. It does happen.

Steve

5

Also the breadboard could be not working correctly on the row you are using. Try moving it to a different row.

This too happens.

6

Check the pins of the LED before testing things. Wrong polarity might be bad for it.

7

Don’t worry about that - the led being in backwards will not come to any harm at these voltages