Arduino Uno PWM pin 5 and pin 3 no output

Using Arduino IDE 1.x
1

Hello folks

So I'm putting simple little sketches together to understand and take readings off my Arduino. While putting this sketch together I noticed that I can not get a digital write or analog write signal from pins 3 and pins 5 on Arduino Uno. I get .75v from pin 5 and nothing out of pin 3. All of the other pins I have written work great. Is this an issue of me putting too many outputs?

int ledpin =9;

void setup()
{
  pinMode (3, OUTPUT);
  pinMode (5, OUTPUT);
  pinMode (6, OUTPUT);
  pinMode (7, OUTPUT);
  pinMode (10, OUTPUT);
  pinMode (11, OUTPUT);
  pinMode (ledpin, OUTPUT);
}
void loop()
{
  analogWrite (3, 150);
  analogWrite (ledpin, 150);
  analogWrite (5, 255);
  analogWrite (6, 50);
  digitalWrite (7, HIGH);
  digitalWrite (10, LOW);
  digitalWrite (11, LOW);
  delayMicroseconds(500);
  digitalWrite (7, LOW);
  digitalWrite (10, HIGH);
  digitalWrite (11, HIGH);
  delayMicroseconds (1250);
}
2

off my Arduino

What one? Some models do not have PWM capability on all pins.

Test with a digitalWrite high and low.
If that doesn't work then you have blown them.

3

Grumpy_Mike:
What one? Some models do not have PWM capability on all pins.

Test with a digitalWrite high and low.
If that doesn't work then you have blown them.

I am using the Arduino Uno R3. I have tested digitalWrite HIGH/LOW and both pins dont work for me. I guess I blew them some how...

Thanks for help

4

I guess I blew them some how...

Yes looks like it.
Do they work as inputs?

5