Arduino Uno R3 (Revision 3) Microcontroller Board – A000066
The Arduino Uno R3 is a microcontroller board based on the ATmega328. It has 14 digital input/output pins (of which 6 can be used as Pulse Width Modulation (PWM) outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a DC 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.
We stock a wide range of plug in accessory boards (shields), to enable most circuits to be built within minutes.
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 which is configured as a USB-to-serial converter.
of the Uno board has a resistor pulling the 8U2 HWB line to ground, making it easier to put into Device Firmware Update (DFU) mode.
of the board has the following new features:
- 1.0 pinout: 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.
- Stronger RESET circuit.
- Atmega 16U2 replace the 8U2.
|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 (ATmega328) of which 0.5 KB used by bootloader|
|SRAM||2 KB (ATmega328)|
|EEPROM||1 KB (ATmega328)|
|Clock Speed||16 MHz|
On our YouTube Channel you will find a range of interesting video tutorials. They cover a wide use of Arduino Uno R3 features such as Pulse Width Modulation (PWM), Real Time Clock (RTC), RGB LED, Serial Monitor, Stepper Motor, Thermal Array, RFID, Data logging and many more.
Within our Proto-Pic Academy, you will find interesting courses on many of the Arduino features! However, do you have a particular design challenge or coding issue? Then don’t panic, Proto-Pic have a dedicated tech team with many years of experience in programming and building STEM projects that are ready to assist you.