The Arduino Uno R3 is a popular microcontroller board based on the ATmega328P. It is designed for easy integration into a wide range of applications, from hobby projects to professional prototyping. The board features a comprehensive set of I/O pins, communication interfaces, and power options, making it ideal for learning, experimentation, and development of embedded systems. Key Features: Microcontroller: ATmega328P 14 Digital I/O Pins (6 PWM outputs) 6 Analog Input Pins Clock Speed: 16 MHz USB connection for programming and power 32KB Flash Memory (0.5KB used by bootloader) 2KB SRAM and 1KB EEPROM Built-in Power LED Supports SPI, I2C, and UART communication