Description �� Arduino UNO R3 Compatible Board – ATmega328P CH340G USB – SMD Version | AuscomTech The UNO R3 Compatible Development Board is the perfect choice for beginners, students, hobbyists, and engineers looking for a reliable, affordable, and fully functional alternative to the official Arduino Uno. Built around the ATmega328P microcontroller and the CH340G USB-serial chip, this board delivers excellent performance, easy programming, and broad compatibility with the Arduino ecosystem. Whether you’re building robotics, automation, IoT prototypes, sensors, or educational STEM projects, this UNO R3 board offers everything you need to bring your ideas to life. �� Key Features �� ATmega328P Microcontroller Reliable and widely supported 8-bit microcontroller used in countless Arduino projects. �� USB Interface via CH340G Stable USB-to-serial communication for uploading code and serial monitoring.(Windows & macOS compatible — CH340 drivers available online if required.) ��️ 14 Digital I/O Pins 6 Pins support PWM output for motors, LEDs, and servo control. �� 6 Analog Inputs Perfect for sensors, potentiometers, and analog measurement. �� 16 MHz Crystal Oscillator Ensures accurate timing and stable program execution. ⚡ Multiple Power Options USB (5V) DC Jack (7–12V recommended) VIN pin (6–20V limit) Onboard voltage regulators provide stable 5V and 3.3V outputs for peripherals. �� ICSP Header Included Supports external programmer flashing or bootloader repair. �� SMD Version Surface-mount ATmega328P for improved durability and stable operation. �� Technical Specifications Parameter Value Microcontroller ATmega328P USB Chip CH340G Operating Voltage 5V Recommended Input 7–12V Limit Input 6–20V Digital I/O Pins 14 (6 PWM) Analog Inputs 6 DC Current per I/O 20mA 3.3V Pin Output 50mA Flash Memory 32KB (0.5KB bootloader) SRAM 2KB EEPROM 1KB Clock Speed 16MHz LED_BUILTIN Pin 13 Size 68.6 × 53.4 mm Weight ~25g �� Package Includes 1 × Arduino UNO R3 Compatible Board (ATmega328P CH340G, SMD Version) 1 × USB Cable �� Popular Uses Arduino education and STEM projects Robotics and motor control IoT prototyping Sensor reading and data logging LED, display, and communication projects Home automation experiments