project help needed

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1

Hello There,

I am trying to program my arduino uno
with a serie of 6 red leds on output 2-7 to
sequintially go on/off in one direction (this I got)
and in the reverse direction the even LEDs blink twice and
the uneven LEDS blink once. (in my model all the leds blink twice and I cant find the command to skip the odd numbers)

this is what I have:

int timer = 300; // The higher the number, the slower the timing.

void setup()
{ // use a for loop to initialize each pin as an output:
for (int thisPin = 2; thisPin < 8; thisPin++)
{
pinMode(thisPin, OUTPUT);
}
}

void loop()
{ // loop from the lowest pin to the highest:
for (int thisPin = 2; thisPin < 8; thisPin++) {
// turn the pin on:
digitalWrite(thisPin, HIGH);
delay(timer); // turn the pin off:
digitalWrite(thisPin, LOW);
delay(timer);
}

// loop from the highest pin to the lowest:
for (int thisPin = 7; thisPin >= 2; thisPin--)
{
if(thisPin = // turn the pin on:
digitalWrite(thisPin, HIGH);
delay(timer); // turn the pin off:
digitalWrite(thisPin, LOW);
delay(timer);
digitalWrite(thisPin, HIGH); // turn the pin on:
delay(timer);
digitalWrite(thisPin, LOW); // turn the pin off:
delay(timer);
}

thanks in advance,

e

2

When posting code select it and hit the # icon.
It is not too late you can go back and modify your post.

in the mean time what is this?

if(thisPin =                         // turn the pin on:

Will it compile?
Exactly what do you want to do?

you can find an odd number by looking at the least significant bit with a bitwise and operation &
if( (thisPin & 1 ) == 0) { // the number is even else it is odd