Arduino and 2 MOSFETs

Question

I want to turn on 2 bulbs using 2 MOSFETs. The problem is that they both turn on when it should turn up just one light.

Code:

void setup() {
  pinMode(13, OUTPUT);
  pinMode(7, OUTPUT);
}

void loop() {
  digitalWrite(13,1);  
  digitalWrite(13,0);
}

See circuit below:

Answer 1

Try adding a delay into your loop. In your code pin 13 will toggle very rapidly, much too fast to see it. For example:

void loop() {
  digitalWrite(13,HIGH);  
  delay (1000);
  digitalWrite(13,LOW);
  delay (1000);
}

---

It doesn't look wired correctly. For an N-channel MOSFET the Source should go to ground, like this:

Answer 2

The following circuit diagram works perfectly.

Answer 3

i prefer you to use relay to control any ac appliance with arduino it very much safe...

Just follow this circuit diagram and use 5v relay in your project it will always work fine.....