### This is the NEW version, adding LEDs for D13, RX/TX, coming with circuit protection for the computer USB port, and including protection for a battery pack ###
The Arduino Uno R3 compatible microcontroller board is based on the better ATmega328 with 32kB memory. Furthermore, it has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the micro controller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
This UNO R3 uses the CH340G chip for USB communication. UNO R3 is 100% compatible with the Arduino IDE, and Arduino shields (5V).
Specs and features of Arduino Uno R3 compatible
|Input Voltage (recommended)||7-15V|
|Digital I/O Pins||14 (of which 6 provide PWM output)|
|PWM Digital I/O Pins||6|
|Analog Input Pins||6|
|DC Current per I/O Pin||20 mA|
|DC Current for 3.3V Pin||50 mA|
|Flash Memory||32 KB (ATmega328P)|
|of which 0.5 KB used by bootloader|
|SRAM||2 KB (ATmega328P)|
|EEPROM||1 KB (ATmega328P)|
|Clock Speed||16 MHz|