Arduino Uno

$25.95

The Arduino UNO is the best board to get started with electronics and coding. If this is your first experience tinkering with the platform, the UNO is the most robust board you can start playing with. The UNO is the most used and documented board of the whole Arduino family.

THe board is a microcontroller board based on the ATmega328. It has 20 digital input/output pins (of which 6 can be used as PWM outputs and 6 can be used as analog inputs), a 16 MHz resonator, a USB connection, a power jack, an in-circuit system programming (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 an AC-to-DC adapter or battery to get started.

$25.95

5 in stock (can be backordered)

SKU: po-arduino-uno Category:

Specifications

Arduino Uno

The Uno differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features an ATmega16U2 programmed as a USB-to-serial converter. This auxiliary microcontroller has its own USB bootloader, which allows advanced users to reprogram it.

The Arduino has a large support community and an extensive set of support libraries and hardware add-on “shields,” making it a great introductory platform for embedded electronics.

This is the 3rd revision of the Uno (R3), which has a number of changes:

  • The USB controller chip changed from ATmega8U2 (8K flash) to ATmega16U2 (16K flash). This does not increase the flash or RAM available to sketches.
  • Three new pins were added, all of which are duplicates of previous pins. The I2C pins (A4, A5) have been also been brought out on the side of the board near AREF.
  • There is a IOREF pin next to the reset pin, which is a duplicate of the 5V pin.
  • The reset button is now next to the USB connector, making it more accessible when a shield is used.

More information about the Arduino Uno R3 is available on Arduino’s website.


Physical Specifications
Size: 2.95″ × 2.1″
Weight: 28 g


General Specifications
Processor: ATmega328 @ 16 MHz
RAM size: 2048 bytes
Program memory size: 31.5 Kbytes
Motor channels: 0
User I/O lines: 201
Max current on a single I/O: 40 mA
Minimum operating voltage: 7 V
Maximum operating voltage: 12 V
Reverse voltage protection?: N
External programmer required?: N2
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