5 set/lot UNO R3 MEGA328P ATMEGA16U2 for Arduino F

UNO R3 2012 launched an easy to use open-source controller hardware and Ardu UNO and no major changes, the biggest difference is that USB to serial part of the circuitswitch is a ATMega16U2 microcontroller, whichthe cost increase, the software part of the same as before, no major changes.

Functions:

Pin changes plus two I2C pins (SDA and SCL: next to the AREF pin, the Analog 4 and 5 copy, not the additional I2C interface), added two pins, the RESET next one is IOREF, , allowing the expansion board to adapt to on-board voltage, this pin is just told to expand the board’s current on-board voltage (such as UNO is 5V, the power supply pin can be seen as copy, does not provide the level pull-up), and the other is after inactive placeholder pins.