I’d recommend starting a little simpler - by making a custom board on a breadboard using pin breakout PCBs - https://www.adafruit.com/product/1377
That will give you an idea about the bare minimum circuit one needs to build a functioning board (crystal, power regulator, boot select buttons, and so on)
I’d recommend starting a little simpler - by making a custom board on a breadboard using pin breakout PCBs - https://www.adafruit.com/product/1377
That will give you an idea about the bare minimum circuit one needs to build a functioning board (crystal, power regulator, boot select buttons, and so on)