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Arduino Uno R3 is a popular microcontroller board based on the ATmega328P microcontroller. It is part of the Arduino family of open-source electronics platforms and is widely used for prototyping and creating interactive projects.
Here are some key features of the Arduino Uno R3:
1. Microcontroller: The Arduino Uno R3 is powered by the ATMega328P microcontroller, which is an 8-bit AVR microcontroller. It operates at a clock speed of 16 MHz and has 32KB of flash memory for storing the program, 2KB of SRAM, and 1KB of EEPROM for data storage.
2. Digital and Analog I/O: The board has 14 digital input/output pins, out of which 6 can be used as PWM (Pulse Width Modulation) outputs. It also has 6 analog input pins.
3. USB Interface: The Arduino Uno R3 can be connected to a computer via a USB interface. It uses a USB to serial converter chip (ATmega16U2 or CH340) to communicate with the computer. This allows you to program the board and communicate with it using the Arduino software.
4. Power Supply: The board can be powered in two ways: through the USB connection or by an external power supply. The recommended voltage range for the power supply is 7-12V DC. It also has a built-in voltage regulator that provides a regulated 5V output, which can be used to power other components.
5. Programming: The Arduino Uno R3 can be programmed using the Arduino programming language, which is a simplified version of C++. The Arduino software provides a development environment where you can write and upload your code to the board. It also has a vast library of pre-built functions that make it easier to interact with various sensors, actuators, and other components.
6. Shields: The Arduino Uno R3 is compatible with a wide range of expansion boards called “shields.” These shields can be stacked on top of the Arduino board to add additional functionality such as Ethernet connectivity, wireless communication, motor control, and more.
Micro-controller | ATmega328. |
Analog I/O Pins | 6 |
Digital I/O Pins | 14 |
PWM Output Pins | 6 |
Clock Speed | 16 MHz |
DC Current per I/O Pin | DC Current per I/O Pin: 40 mA; For 3.3V Pin: 50 mA |
Operating Volt | 5 V |
Flash Memory | 32 KB (ATmega328) of which 0.5 KB used by the bootloader |
EEPROM | 1 KB (ATmega328) |
SRAM | 2 KB (ATmega328) |
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