NANO V3 USB-C (USB 2.0) Atmega328, CH340 (for Arduino)

3 x UNO R3 Atmega328P with CH340 USB (for Arduino IDE)

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

Atmega328 Programmer Shield for Arduino UNO - DIY Kit

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

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