3Pcs ATMEGA328 328p 5V 16MHz Compatible Nano Size Module PCB Board Geekcreit for Arduino - products that work with official Arduino boards

3Pcs ATMEGA328 328p 5V 16MHz -Compatible Nano Size Module Board Description: New version, Pro Mini 328  5V  16MHz ,  -compatible High Quality components and soldering material Bootloader Ready, plug and play. Package included: 3 x Pro Mini 328  5V  16MHz -compatible Notice from customer : If uploading sketches using the IDE fails, follow these steps to update the bootloader:   -Prepare an Uno, Mega or similar to act as ISP as described at http://.cc/en/Tutorial/ISP   -Wire it up as shown in flasbootloader_connected.png (Picture Reveiw of SKU099688)   -Use IDE to flash the bootloader of the corresponding Pro/Pro Mini (5V, 16MHz) to SKU099688 or SKU066315