The Arduino Uno SMD R3 is a microcontroller board based on the ATmega328 (datasheet). 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 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.
"Uno" means "One" in Italian and is named to mark the upcoming release of Arduino 1.0. The Uno and version 1.0 will be the reference versions of Arduino, moving forward. The Uno is the latest in a series of USB Arduino boards, and the reference model for the Arduino platform; for a comparison with previous versions, see the index of Arduino boards.
|Supply Voltage (recommended)||7-12V|
|Maximum supply voltage (not recommended)||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|
If you want to give a closer look to this board we advice you to visit the official Arduino UNO page in the Hardware Section.
Documentation and Resources:
- Arduino Boards, Compared
There are a bunch of Arduino boards, they come in different shapes and sizes, with different processing power, digital IO, and other capabilities. Rather than telling you guys what to buy, we have put together a handy guide to show you the capabiliti...
- Arduino vs. Raspberry Pi
One of the big questions in DIY electronics circles is which DIY platform is going to be the best for me? And the two biggest platforms right now is Arduino and Raspberry Pi. Whilst at first glance they might seem the same; circuit board with some ...
- Arduino, Learn the Lingo
Getting into the Arduino environment is a lot of fun but with so many acronyms and slang terms its easy to get confused. Knowing this first hand, I have put together a glossary of sorts for terms relating to Arduino, if you are new to the Arduino pla...
- Our Arduino SPI Tutorial
SPI stands for Serial Peripheral Interface and it is a way to send data between microcontrollers and other small devices. It is a synchronous data bus, meaning it uses a clock to regulate the data transfer. SPI is also Full-Duplex communication mean...
- Arduino Serial Communications
Serial communication is the process of communicating between electronic devices one bit at a time. Serial means one after the other, so we think of serial communications as transferring data one bit at a time, one bit after the other. A bi...
- FM Radio with Arduino, LCD and Si4703
A couple of years ago, I found a modern jukebox (with iPod connectivity, AM/FM radio, CD player and LEDs) dumped in my street. The body was in decent condition but all of the electronics were ruined apart from the LEDs. I decided to take it and replace all of the electronics with my own and add a few cool features. One of the parts of the larger project was to make an FM radio with an LCD and pushbuttons to control the frequency...
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