The Nano automatically senses and switches to the higher potential source of power so there is no need for a power select jumper. Users have more breadboard space. The pin layout works well with the Mini or the Basic Stamp (TX, RX, ATN, GND on one top, power and ground on the other).
This new version 3.0 comes with ATMEGA328 which offers more programming and data memory space. It is two layers for easy handling.
Specifications:
Features:
Automatic reset during program download
Power OK blue LED Green (TX), red (RX) and orange (L) LED Auto sensing/switching power input
Small mini-B USB for programming and serial monitor
ICSP header for direct program download
Standard 0.1" spacing DIP (breadboard friendly)
Manual reset switch Power: The Arduino Nano can be powered via the mini-B USB connection, 6-20V unregulated external power supply (pin 30), or 5V regulated external power supply (pin 27).
The power source is automatically selected to the highest voltage source.
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