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    Seeeduino v3.0 328P is an Arduino-compatible board. Its design is based on Duemilanove scheme, 100% compatible to existing programs, shields and IDEs. On the hardware however, many changes have been made to improve the flexibility and user experience.

    Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments. 

    Arduino can sense the environment by receiving input from a variety of sensors and can affect its surroundings by controlling lights, motors, and other actuators. The microcontroller on the board is programmed using the Arduino programming language (based on Wiring) and the Arduino development environment (based on Processing). Arduino projects can be stand-alone or they can communicate with software on running on a computer (e.g. Flash, Processing, MaxMSP). 

    Features

    • Inherits all of Arduino Duemilanove's features.
    • Compatible to Diecimila's pin layout, screw hole, and dimensions.
    • Evolved with SMD components
    • Improved on extensibility and convenience.
    • Flat DC Jack

    Summary

    Microcontroller ATmega328
    Operating Voltage 5V/3.3V
    Input Voltage (recommended) 7-12 V
    Input Voltage (limits) 6-20 V
    Digital I/O Pins 14 (of which 6 provide PWM output)
    Analog Input Pins 8
    DC Current per I/O Pin 40 mA
    DC Current for 3.3V Pin 500 mA
    Flash Memory 16 KB (of which 2 KB used by bootloader)
    SRAM 1 KB
    EEPROM 512 bytes
    Clock Speed 16 MHz

    Schematic & Reference Design

    Documentation
    Arduino Official Website

    What are the changes?

    • Duplicate digital IO to 100mil grid for prototype board compatibility.
    • Shrink component height below female headers.
    • Easier access to buttons and switches.
    • Change Type-B USB port to Mini USB.
    • Reset and power indicator near RST button.
    • Auto-reset selection.
    • 3.3V Operating Voltage selection.
    • Pin out UART for FTDI232 bit-bang operation.
    • Pin out 2 extra ADC.
    • Optional capacitor for improving 3.3V output performance.
    • Re-route PCB
    • Pin out for I2C and sensors

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