three fade led

Projects Programming
1

hi all!
i am at my first sketch,
it work, but at first loop rx and tx red led switch on, it is normal?
i use arduino nano

int pinArray[] = {3, 5, 6 };
int count = 0;
int td = 10; //tempo dissolvenza
int tp=1000; // tempo permanenza
int l=0;
int m=0;
int mem=0;

void setup(){

pinMode(3, OUTPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);

}

void loop() {
for (count=0;count<3;count++) {
for(l=mem;l<255;l++){
analogWrite(pinArray[count], l);

delay(td);
if(l==254){
delay(tp);
}
}
mem=0;
for(m=255;m>=0;m--){
analogWrite(pinArray[count], m);
if (m==250){
mem=mem+1;
}
analogWrite(pinArray[count+1], mem);

delay(td);

}

}
}

2

Can you please edit you code and use code tags with the </> button.

Also, you can just create a var for a for-loop inside the loop.

for(byte counter = 0; counter < 3; counter++){
3 
int pinArray[] = {10, 11, 12 };
...
for (count = 0; count < 3; count++)
{
...
  analogWrite(pinArray[count + 1], mem);

When count equals 2 you are accessing pinArray[3], the value of which is not defined, so which pin will be written to is anyone's guess.

4

i solved
int pinArray[] = {3, 5, 6 };
int count = 0;
int td = 10; //tempo dissolvenza
int tp=1000; // tempo permanenza
int l=0;
int m=0;
int mem=0;

void setup(){

pinMode(3, OUTPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);

}

void loop() {
for (count=0;count<3;count++) {
for(l=mem;l<255;l++){
analogWrite(pinArray[count], l);
delay(td);
if(l==254){
delay(tp);
}
}
mem=0;
for(m=255;m>=0;m--){
analogWrite(pinArray[count], m);
if (m==100){
mem=mem+1;
}
if(count==2){
analogWrite(pinArray[0], mem);
}
else {
analogWrite(pinArray[count+1], mem);
}
delay(td);

}

}
}

5

Please put your code in its own window as seen in other posts. This can be done by placing     [code] and [/code]  around the code. This makes it easier for others to read.

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