The Arduino Uno is a microcontroller board based on the ATmega328.
You can find the ATmega328 datasheet here.
It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, 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. Instead, it features the Atmega16U2 (Atmega8U2 up to version R2) programmed as a USB-to-serial converter.
"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.
- Download and Install Arduino Studio for Windows and Try it with Blink example
- Download and Install Arduino Studio for Mac OSX and Try it with Blink example
- Download and Install Arduino Studio for Linux and Try it with Blink example
How to use your board
- Blink Example
- Read Analog Voltage Example
- Button Example
- Servo Example
- Liquid Crystal Example
- Tone Example
- Play with Force Sensor Example
- Photocell and LED Example
- TMP36 Precision Temperature Sensor Example
- Tilt Sensor Example
- DC Motor Example
- DHT11 Temperature and Humidity Sensor Example
- RGB Example
- 7 Segment Display Example
- Sound Sensor Example
- PIR Motion Sensor Example
- Ultrasonic Sensor Example
- Gas Sensor Example
- IR remote Example
Schematic & Reference Design
Arduino is an open-source electronics platform and here we provide Schematics and Reference files.
- EAGLE files: arduino-uno-Rev3-reference-design.zip (NOTE: works with Eagle 6.0 and newer)
- Schematic: arduino-uno-Rev3-schematic.pdf
Note: The Arduino reference design can use an Atmega8, 168, or 328, Current models use an ATmega328, but an Atmega8 is shown in the schematic for reference. The pin configuration is identical on all three processors.