Arduino•3mo ago

arduino array[]

Is it possible to make array values like this: int array[3] { 1, 2, 3&4 }; so the third value would be both 3 and 4 at the same time, using this I could make two leds light up at the same time easier.

9 Replies

Maverick•3mo ago

You can derive many numbers from one value using math of some sort. For example:

int array[3] = {1, 2, 7};
pinMode(array[2] - 3, OUTPUT);
pinMode(array[2] - 4, OUTPUT);
digitalWrite(array[2] - 3, HIGH);
digitalWrite(array[2] - 4, HIGH);

int array[3] = {1, 2, 7};
pinMode(array[2] - 3, OUTPUT);
pinMode(array[2] - 4, OUTPUT);
digitalWrite(array[2] - 3, HIGH);
digitalWrite(array[2] - 4, HIGH);

TheStudierOP•3mo ago

hmm wut

Maverick•3mo ago

This turns on LEDs attached to pin 3 and 4.

TheStudierOP•3mo ago

oh okay thank you

Maverick•3mo ago

Just for fun, here is another way you could do something like this: https://wokwi.com/projects/439078942615205889

TheStudierOP•3mo ago

I try to avoid libraries as a beginnre

Maverick•3mo ago

Not really a library exactly, just a header file and a .cpp file that I wrote to keep the .ino file less cluttered.

TheStudierOP•3mo ago

okey

jim lee•3mo ago

You can drive an aray of pointers then do anything you can dream up with them. Say you make a class of number sets. Then derive an array of pointers to this kind of class. Each array slot could have a competely different set.

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arduino array[]

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