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*Disclaimer: The images are merelyillustrative.
This is the DFRduino Uno V3.0 from DFRobot. It is fully compatible with Arduino UNO R3. This board features the ATmega16U2 programmed as a USB-to-serial converter. An added bonus is that our DFRduino is still using the DIP package AVR Chip, which means you can remove it to update/reprogram the chip's firmware, or even to place it on a finished, more compact project.
The cool thing about our new DFRduino microcontroller is that the headers use different colors to feature I/O ports of different types, red for Power Section, blue for Analog I/O, green for Digital I/O. These colors match our sensor cables. This makes it really easy to figure out where to connect sensors, or to identify which side is Analog(blue) or Digital (green).
Arduino 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-sourceIDEcan be downloaded for free (currently for Mac OS X, Windows, and Linux).
The Arduino Uno is a microcontroller board based onthe ATmega328. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; 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 board added SDA and SCL pins that are near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board. In future, shields will be compatible both with the board that use the AVR, which operate with 5V and with the Arduino Due that operate with 3.3V. The second one is a not connected pin, that is reserved for future purposes.
Microcontroller:ATmega328 (DIP Package)
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 of which 2KB used by bootloader