Is there a tutorial that I can follow to build a custom arduino pcb using the ATmega808 or the ATmega1608 as the MCU? I need to interface a 7 segment LCD, a external resonator(to use as a accurate timer) and few LEDs.
On the software part, I have found nice library MegaCoreX that provides arduino support to these MCUs but the library does not have info on how to create the schematic,etc.,
Thanks