Arduino Uno SMD R3

$23.71

  • Model: A000073
  • Shipping Weight: 0.05Kg
  • 0 Units in Stock
  • Manufactured by: Arduino

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The Arduino Uno SMD R3 is a microcontroller board based on the 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.

The Uno differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip.

Additional features coming with the R3 version are:

  • ATmega16U2 instead of 8U2 as USB-to-Serial converter.
  • 1.0 pinout: added SDA and SCL pins for TWI communication placed 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 and the second one is a not connected pin, that is reserved for future purposes.
  • stronger RESET circuit.

Note: The Arduino Uno SMD R3 is functionally identical to the Arduino Uno R3. The difference is that with the Uno SMD, the Atmega328 IC is soldered onto the UNO board and can not (easily) be removed or changed. On the non-SMD Arduino Uno R3, the Atmega328 IC is pressed into a socket, thus making it removable.


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