ATmega328P, mini form factor, 22 I/O pins
| MCU | ATmega328P |
|---|---|
| Clock | 16 MHz |
| Flash | 32KB |
| I/O Pins | 22 |
The Arduino Nano V3 packs the full power of an Arduino Uno into a 45×18mm form factor — small enough to embed permanently in enclosures, wearables, or compact PCB designs. Same ATmega328P processor, same 32KB flash, same Arduino IDE compatibility, but less than half the size.
Choose the Nano when board size matters — enclosures, compact robots, custom PCBs. Choose the Uno when you want easier wiring, a barrel jack power input, or standard Arduino Shield compatibility.
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