ABX00028 AVR Arduino Nano Every ATMega4809/8 Development Board - AliExpress
Introduction to Atmega16 - The Engineering Projects
Tiny AVR Programmer - Two ISP headers to use with other AVR microcontrollers - Plugs directly into USB port: Attiny: Amazon.com: Industrial & Scientific
Introduction to ATmega328 - The Engineering Projects
Extended list of 8-bit AVR Micro-Controllers, easily programmable with the Arduino IDE – Wolf Paulus
Pololu - A-Star 328PB Micro - 5V, 16MHz
Bare Metal Micro
Pin Configuration and IO Multiplexing : Arduino / ATmega328p - Arnab Kumar Das
ATMega328P Microcontroller Pinout, Pin Configuration, Features & Datasheet
Analog Comparator : Arduino / ATmega328p - Arnab Kumar Das