help with my Mega2560!

Development Tools IDE 1.x
1

Hello Everyone.

for the last few months i have been playing around creating projects for my Mega 2560.

I came to start it up last night and... nothing coming out... :roll_eyes:

the LED for power ON is lit.. the LED by the L (near pin 13) is lit.. and im getting 5v out of the board...
for some reason it is not lighting up my 3x8 segment display...

Code is here and i know its not the code at fault as it has been working fine before:

int pinArray[] = {26, 31, 30, 29, 39, 49, 48, 47, 46, 36};
//int pinArray[] = {26, 27, 28, 29, 30, 31, 32, 36, 37, 38, 39, 40, 41, 42, 46, 47, 48, 49, 50, 51, 52};
int count = 0;
int timer = 100;

void setup(){
  for (count=0;count<10;count++) {
    pinMode(pinArray[count], OUTPUT);
  }
}

void loop() {
  for (count=0;count<9;count++) {
    
   digitalWrite(pinArray[count], HIGH);
   delay(timer);
   digitalWrite(pinArray[count + 1], HIGH);
   delay(timer);
   digitalWrite(pinArray[count], LOW);
   delay(timer);
   digitalWrite(pinArray[count + 1], LOW);

 
  }
}

This was working fine less than 1 week ago, so no idea why on earth its not working now =(

Any help would be great !
Thanks

Mutley

2

There seems nothing wrong with the code,
have you checked the wires?

3

wires have been untouched since i last used it....

even flashing this bit of basic code on to it yields no results...

/*
  Blink
  Turns on an LED on for one second, then off for one second, repeatedly.
 
  This example code is in the public domain.
 */
 
// Pin 13 has an LED connected on most Arduino boards.
// give it a name:
int led = 12;

// the setup routine runs once when you press reset:
void setup() {                
  // initialize the digital pin as an output.
  pinMode(led, OUTPUT);    
}

// the loop routine runs over and over again forever:
void loop() {
  digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);               // wait for a second
  digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);               // wait for a second
}

If i connect the 5v rail directly to the 220R -> LED -> ground, the led lights up..

im stumped....

4

oh by the way, thanks for your help Rob....

I have sorted it...

I dont know what on earth has changed but on the arduino code window there is a tick (Verify) and an Arrow (Upload)..
now before i used to just click (Cntrl + R) (Verify and compile shortcut) and that would upload it..... well its not doing that now and i have to use the arrow (upload) button....

Serious Blonde moment going on here..... can i blame it on the man flu ?

5

Of course you can :wink: