SunFounder New Uno R3 for Arduino ATMEGA328P ATMEGA16U2 Arduino compatible UNO R3 board The Uno board use ATMEGA16U2 chip, Faster transfer rates and more memory Control using uno r3 ATmega328P chip Includes new pin configuration (SCL, SDA, IOREF) Clearly print on the female header connector, more precise and easier to use the wire Arduino Uno R3 compatible Microcontroller Card is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It&#039;s intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments. It is an open-source physical computing platform based on a simple i/o board and a development environment that implements the Processing/Wiring language. Arduino can be used to develop stand-alone interactive objects or can be connected to software on your computer (e.g. Flash, Processing, MaxMSP). The open-source IDE can be downloaded for free (currently for Mac OS X, Windows, and Linux). SunFounder Uno R3 Board 100 percent compatible with the Arduino Microcontroller: ATmega328 Operating Voltage: 5V Input Voltage (recommended): 7-12V   Input Voltage (limits): 6-20V Digital I/O Pins: 14 (of which 6 provide PWM output) Analog Input Pins: 6 DC Current per I/O Pin: 40 mA   DC Current for 3.3V Pin: 50 mA Flash Memory: 32 KB (ATmega328) of which 0.5 KB used by bootloader SRAM: 2 KB (ATmega328) EEPROM: 1 KB (ATmega328) Clock Speed: 16 MHz The UNO boards can be used as the brains behind almost any electronics project. The UNO is a good choice to get started with electronics and coding.