int columns[] = {2, 3, 4, 5, 6, 7, 8, 9, A0};
int layers[] = {10, 11, 12};

void setup() {
for (int i = 0; i < 9; i++) pinMode(columns[i], OUTPUT);
for (int i = 0; i < 3; i++) pinMode(layers[i], OUTPUT);
}

void loop() {
for (int z = 0; z < 3; z++) {
digitalWrite(layers[z], LOW); // turn on this layer (via transistor)
for (int c = 0; c < 9; c++) {
digitalWrite(columns[c], HIGH);
delay(50);
digitalWrite(columns[c], LOW);
}
digitalWrite(layers[z], HIGH); // turn off this layer
}
}

Thank you for your time.

Hi.
What is the error that you get?
Regards,
Sara

we are making 3x3x3 led cube with using stm32 .Can you share with us the source code of arduino.PLZ.

Hi Barry.
This project was created a few years ago. So, it is a bit outdated.
The code we were using was part of an old version of Arduino IDE – version 1.0.5 that you can download here: arduino.cc/en/Main/OldSoftwareReleases#previous
Then, you should find the code in your Arduino IDE under File > Examples > LedCube > ledcube.
I haven’t tested this and I don’t know if this is still working.
But these were the instructions we’ve followed a few years ago.
Regards,
Sara

The other question I had was how to install the libraries of the cube?

It depends on your LEDs size… You need to measure how much space will your LEDs use. Thanks for asking!