I have searched this topic almost everywhere also got different results that couldn't satisfy me
My new project is a 4x4 LED cube
Will contain 4 Rows and each Row will contain 16 LEDs
So, I need to use all the digital pins 0-15 as digital output.
And other pins 16-20 for grounding.
But the problem is, this project needs d0 and d1 pin to be connected as a digital output pin. (Not Serial communication)
In some places I have seen that Experts saying
- If you want to use Serial communication, then you can't use them.
- You can't use it while your arduino is connected to PC.
- You Can't do this ,as this may harm the device
- You must turn off serial connection first.
OK, reading this, I got confused, I don't need to use any serial connection (console and others) in this LED cube project so I tried to turn off serial connection by not writing the code below.
So, will that free those d0 and d1 pins as digital for me ? Or USB connection is also considered as a serial connection?
So, how can I do it? And will doing it really harm my board?