Build an Arduino Uno R3 From Scratch Part 1

In part one, we'll take the schematic for the Arduino Uno R3 and identify the major subsystems that will need to be replicated.

How to make a digital voltmeter using Arduino

Arduino with Load Cell and HX711 Amplifier (Digital Scale)

Make Your UNO Kit

Arduino from Scratch Part 7: Arduino USB Connection

Build an Arduino Uno R3 From Scratch Part 1

Programming bare ATMega328P(SMD IC) from scratch for custom boards

Arduino from Scratch Part 9: 16MHz Crystal Oscillator

Arduino Course for Beginners - Open-Source Electronics Platform

Learn Arduino from scratch to expert using the Elegoo Uno, Tutorials 1,2 and 3