View Arduino Uno Minimal Schematic PNG

This article explains how arduino works from an electronic design perspective.

View Arduino Uno Minimal Schematic PNG. Along with atmega328p, it consists other components such as crystal oscillator, serial. Let's move on to creating the actual pcb layout.

Arduino Uno Pinout, Examples, Programming and Applications
Arduino Uno Pinout, Examples, Programming and Applications from microcontrollerslab.com
It also explains the role of every part of the arduino. The arduino uno is arguably the most popular arduino board currently available. This is the famus arduino uno rev3 board.

Build your own arduino uno for $5.

This is the famus arduino uno rev3 board. Let's move on to creating the actual pcb layout. The official arduino uno r3 schematic. The arduino uno is arguably the most popular arduino board currently available.