Arduino UNO R3 (compatible) Atmega328P with CH340 USB

For Arduino UNO R3 Shield Board Prototype PCB Atmega328P 2.54mm Pitch Breadboard

Automatic Arduino Bootloader Programmer for Atmega328P

Arduino Compatible UNO R3 PLUS Sensor I/O Shield Atmega328P 16U2 Expansion Board

For Arduino UNO R3 Shield Prototype PCB Atmega328P Mega 2560 2.54mm Breadboard

For Arduino UNO R3 Shield Board Prototype PCB Atmega328P 2.54mm Pitch Breadboard