Arduino Mega 2560 REV3 [A000067] - Atmega2560, 16Mhz, 54 Digital I/O, 16 Analog Inputs, 256KB Flash, USB, Compatible With Arduino IDE For Advanced

Arduino Uno REV3 [A000066] - Atmega328p Microcontroller, 16Mhz, 14 Digital I/O Pins, 6 Analog Inputs, 32KB Flash, USB Connectivity, Compatible With

Arduino Nano Every With Headers [ABX00033] - Compact Atmega4809 Microcontroller With Micro USB, 20 Digital I/O, 6 Analog Inputs, And Easy Prototyping

Arduino Nano [A000005] - Compact Atmega328p Microcontroller With 22 Digital I/O Pins, 8 Analog Inputs, USB Connectivity, And Arduino IDE Compatibility