The AVR Under the Arduino Hood - Starting with Digital IO - Hackster.io
The AVR Microcontroller and Embedded Systems Using Assembly and C: Using Arduino Uno and Atmel Studio: Naimi, Sepehr, Naimi, Sarmad, Mazidi, Muhammad Ali: 9780997925968: Amazon.com: Books
How to Program an AVR/Arduino using the Raspberry Pi GPIO - ozzmaker.com
Debugging Arduino AVR boards with Visual Studio – VisualGDB Tutorials
Arduino ブートローダーを書き込む (AVR)
Arduino to Arduino — Cheap AVR Programming | by J3 | Jungletronics | Medium
hardware - What's the difference/relationship between AVR and Arduino? - Stack Overflow