What a Pin?

This file is from the board that I have, someone can make a “list” of which number I put to access for example the A3, or 9~, etc …
On my board have 3 leds in it, to tinker with they are the 0, 1 and 2, so I do not know which is the 7, A0.

Thanks.

pins_arduino.h (5.39 KB)

I don't understand what you're asking. Please provide a detailed explanation of what you're trying to accomplish.

On an Uno:

0 to 13 are digital only pins. A0-A5 are 14 to 19, but can used as analog input also.

There 4 LEDs - power, L (which can be driven on and off with a low or high on 13), and th Rx and Tx lights, which are controlled by the USB/Serial interface. Your sketch cannot control them.

RickMortinson312: This file is from the board that I have, someone can make a "list" of which number I put to access for example the A3, or 9~, etc ... On my board have 3 leds in it, to tinker with they are the 0, 1 and 2, so I do not know which is the 7, A0.

Thanks.

A0 is the analog input 0. https://i.pinimg.com/originals/b8/43/e3/b843e3d65cb1f0a5d28676d38f9ebcad.png