Arduino Uno R3 Compatible Board — ATmega328P, ATmega16U2 USB, Arduino IDE

Arduino Uno R3 Compatible Board — ATmega328P + ATmega16U2 USB

This Arduino Uno R3 compatible board uses the same ATmega16U2 USB-to-serial chip as the official Arduino Uno R3 — providing maximum driver compatibility and reliable USB communication on Windows, Mac, and Linux without additional driver installation. Built around the ATmega328P microcontroller with 14 digital I/O pins, 6 PWM outputs, and 6 analog inputs. Compatible with all Arduino Uno R3 shields and the full Arduino IDE library ecosystem.

Hardware Specifications

• MCU: ATmega328P @ 16MHz
• Flash: 32KB (0.5KB used by bootloader)
• SRAM: 2KB | EEPROM: 1KB
• Digital I/O: 14 pins (6 PWM capable)
• Analog Inputs: 6 channels (10-bit ADC)
• Interfaces: UART, SPI, I²C
• USB Chip: ATmega16U2 (same as official Arduino Uno R3)
• USB Connector: USB-B
• Operating Voltage: 5V
• Input Voltage: 7–12V (DC jack) or 5V (USB)
• IDE: Arduino IDE compatible

ATmega16U2 vs CH340 — Which USB Chip?

• ATmega16U2 (this board): Same chip as official Arduino Uno R3 — no driver needed on most systems, maximum compatibility, can be reprogrammed as HID device
• CH340: Requires CH340 driver installation on Windows — lower cost alternative
• Choose ATmega16U2 for maximum compatibility and official Arduino experience

Typical Applications

• Arduino learning and beginner projects
• Sensor reading and data logging
• Motor and servo control with Arduino shields
• Home automation and IoT prototyping
• Arduino shield development and testing

Arduino Uno R3 compatible with ATmega16U2 USB — maximum driver compatibility, full shield support, Arduino IDE plug-and-play for beginners and professionals.

Enjoy free standard shipping on all orders over $199 USD. Orders are processed within 1–2 business days.

Not satisfied? Return any item within 90 days of purchase for a full refund or exchange. Items must be in original condition.

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