Arduino UNO R3 CH340G development board with ATMEGA328P (SMD) microcontroller chip
Original-style Arduino UNO R3 development board based on ATmega328P with ATmega16U2 USB-to-Serial converter, ideal for learning, prototyping, and embedded projects.
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Description
The Arduino UNO R3 AVR USB Development Board is one of the most popular and beginner-friendly microcontroller boards, based on the ATmega328P microcontroller and ATmega16U2 USB interface chip. The ATmega16U2 provides a stable and reliable USB-to-Serial connection, making programming and communication smoother compared to older CH340-based boards.
This board operates at 5V, features 14 digital I/O pins, 6 analog inputs, and supports UART, SPI, and I²C communication. It is fully compatible with the Arduino IDE and supports a wide range of sensors, modules, shields, and accessories.
Perfect for students, hobbyists, educators, and professionals, the Arduino UNO R3 is widely used in IoT, robotics, automation, and DIY electronics projects.
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Based on ATmega328P microcontroller
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USB interface using ATmega16U2
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Fully compatible with Arduino IDE
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Standard UNO form factor
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Supports shields and modules
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Easy USB programming & power
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Stable and reliable performance
Applications / Uses
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Arduino learning & training
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Robotics projects
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IoT applications
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Sensor interfacing
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Automation systems
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DIY electronics
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College & lab projects
| Parameter | Value |
|---|---|
| Microcontroller | ATmega328P |
| USB Interface Chip | ATmega16U2 |
| Operating Voltage | 5V |
| Input Voltage (Recommended) | 7–12V |
| Clock Speed | 16 MHz |
| Flash Memory | 32 KB (0.5 KB bootloader) |
| SRAM | 2 KB |
| EEPROM | 1 KB |
| Digital I/O Pins | 14 (6 PWM) |
| Analog Input Pins | 6 |
| Communication | UART, SPI, I²C |
| USB Connector | USB Type-B |
| PCB Color | Blue |
Additional information
| Weight | 25 g |
|---|---|
| Dimensions | 68.6 × 53.4 × 15 mm |
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