1-10Piece Pro Mini Atmega168PAU 5V 16MHz Core Development Board For Arduino DIY

Arduino UNO R3 Rev3 ATMEGA328P Compatible Board, SMD, CH340 ATMEGA328P 5V 16Mhz

Pro Micro ATmega32u4 5v 16MHz : USB Micro

Pro Micro ATMEGA32U4 5V 16MHZ Module Type-C Micro Mini USB for Arduino UK

Pro Mini Atmega168 5V 16M /Atmega328P 3.3V 8M Board Replacement For Arduino Nano

Pro Micro ATmega32u4 5v 16MHz : USB-C

Arduino Nano V3.0 ATmega328P Compatible 5V 16MHz Mini USB ATmega 328P