[discontinued] 2 PCS SainSmart UNO R3 ATmega328P Development Board Compatible With Arduino UNO R3 DE Stock

 Description:   This is the new Uno R3 compatible with Arduino. In addition to all the features of the previous board, the Uno now uses an ATMega16U2 instead of the ATMega8U2 chip. This allows for faster transfer rates and more memory. No drivers needed for Linux or Mac (inf file for Windows is needed and included in the IDE), and the ability to have the Uno show up as a keyboard, mouse, joystick, etc. 3.3VV/5V Supply Voltage and IO Voltage is optional. More 3.3V modules supported, such as Xbee module, Bluetooth module, RF module, GPRS module, GPS module, LCD5110 Backlight and so on, but the original version can only support 5V IO. Controller uses DIP MEGA328P chip Add A6/A7 port. SainSmart R3 can directly use the electronic building blocks on I / O port and elicit G, V, S.The Uno R3 also adds SDA and SCL pins next to the AREF. In addition, there are two new pins placed near the RESET pin. One is the IOREF that allow the shields to adapt to the voltage provided from the board. The othe