I'm just starting and tried a very simple project, with a button turning a Led on. The problem is that the led is always On if a jumper is attached to the digital port '9'.
What can this be?
The code bellow isn't the one I was working on, it's just to test the problem. Evento with this code the led is on when there's a jumper on '9'
#define led 13
Void setup() {
pinMode(led, OUTPUT);
digitalWrite(led, LOW);
}
Void loop (){
}
Hi
How have you got your LED wired?
What model arduino are you using?
If it is a UNO is the LED on the PCB that is connected to pin 13 also ON.
A picture of your assembly would help.
If you use REPLY rather than QUICK REPLY you will find ATTACHMENT facitity to send your picture.
Please read.
http://forum.arduino.cc/index.php/topic,148850.0.html
Hope to help.....Tom.... 
Jumper to where?
What happens when you load "Blink"?
Weedpharma
The code bellow isn't the one I was working on, it's just to test the problem
The code you posted (without code tags) doesn't even compile, so you can't say it doesn't work.
AWOL:
The code you posted ... doesn't even compile
Jeez my eyes are getting old.... it looked fine to me until the compiler rejected it, then I saw the subtle mistakes.
I'm still trying to figure out where BASIC figures in all this.
eduardomartinspires:
I'm just starting and tried a very simple project, with a button turning a Led on. The problem is that the led is always On if a jumper is attached to the digital port '9'.What can this be?
The code bellow isn't the one I was working on, it's just to test the problem. Evento with this code the led is on when there's a jumper on '9'
#define led 13
Void setup() {
pinMode(led, OUTPUT);
digitalWrite(led, LOW);
}Void loop (){
}
It's not going to work with Void... Try void instead.