Arduino MEGA 2560 R3 (compatible) with ATmega16u2 USB UART

CH340 USB UART Interface for Communication

1-10x Mega2560 R3 ATMEGA2560 CH340 Atmega2560-16AU Development Board For Arduino

Arduino UNO R3 (compatible) Atmega328P with CH340 USB

DIN Rail Mount Screw Terminal Block Adapter Module for arduiuo MEGA2560 R3

Dual Side PCB Prototype Screw Terminal Block Shield Board For Arduino Mega2560

PCB Prototype Screw Terminal Block Shield Board Kit For Arduino MEGA-2560 R3

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