The first circuit configuration that I need to test is the classic Arduino blinky project. I downloaded the Arduino blinky program to the PCB's Arduino microcontroller changing the pin from 13 to 3. From here I could wire pin 3 directly to a LED or could drive an LED using NPN, PNP, N-ch MOSFET or P-ch MOSFET transistor.
This controller will help me with my current and future projects.
I i run out of components, I can use 2 boards.