Nano

arduino_nano_clone

Every Drawer Has One.

Nano

Statistically impossible to open a drawer without finding three of these.

Good to know

CH340 + old bootloader: pick "ATmega328P (Old Bootloader)" in the IDE, or uploads will fail.
It takes a mini-USB cable (not micro!).
A6/A7 are analog input only, unusable as digital pins.
5V logic.

Pinout

Nano – Pinout