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The DFRduino UNO V3.0 from DFRobot is a compact physical computing board ideal for both academic use and development. This microcontroller board is fully compatible with Arduino UNO R3 and the Arduino IDE open-source development environment, which supports the Processing / Wiring language. As a premium DFRobot Arduino compatible solution, the DFRduino UNO V3.0 provides the reliability needed for professional prototyping.
You can use the DFRduino UNO V3.0 to build stand-alone interactive objects or connect it to software on your computer (such as Flash, Processing, MaxMSP). The open-source Arduino IDE can be downloaded for free and supports Mac OS X, Windows, and Linux. This microcontroller board is the perfect starting point for anyone exploring the Arduino UNO R3 ecosystem.
This microcontroller board uses the ATmega16U2 as a USB-to-serial converter and retains the DIP package AVR Chip (ATmega328), allowing for easy reprogramming or replacement, just like a standard Arduino UNO R3. A standout feature of this DFRobot Arduino board is the enhanced connectivity design.
A key feature of the DFRduino UNO V3.0 is the use of color-coded headers for different I/O port types:
Red for Power Section
Blue for Analog I/O
Green for Digital I/O
These colors match DFRobots sensor cables, making it easier to identify where to connect sensors to your microcontroller board and distinguish between Analog and Digital pins on the DFRduino UNO V3.0.
| Parameter | Description of DFRduino UNO V3.0 |
|---|---|
| Microcontroller | ATmega328 (DIP package) – compatible with Arduino UNO R3 |
| Operating Voltage | 5V (Standard Microcontroller Board voltage) |
| Input Voltage | 7V12V DC (recommended for DFRobot Arduino) |
| Output Voltage | 5V DC and 3.3V DC |
| Clock Speed | 16 MHz |
| Bootloader | Arduino Uno (fully Arduino IDE compatible) |
| Digital I/O Pins | 14 (6 provide PWM output) |
| Analog Input Pins | 6 |
| DC Current per I/O Pin | 40 mA |
| DC Current for 3.3V Pin | 50 mA |
| Flash Memory | 32 KB (ATmega328) |
| SRAM | 2 KB (ATmega328) |
| EEPROM | 1 KB (ATmega328) |
| Dimensions | 75 x 54 x 15 mm |
| Weight | 45 g |
| USB Connection | A-B USB cable |
| IDE Support | Arduino IDE 1.0 and above |
| Environment Friendly | RoHS Compliant |
Supports UART, I2C, and SPI
ICSP Header for firmware upload on the DFRduino UNO V3.0
RESET Button
USB Interface supports both programming and power supply for this microcontroller board
SDA and SCL pins near the AREF pin
IOREF pin supports shields that adapt to 3.3V or 5V systems
Fully compatible with all Arduino UNO R3 shields and the Arduino IDE
STEM education using the DFRduino UNO V3.0
DIY electronics projects with DFRobot Arduino boards
Smart home systems powered by this microcontroller board
Rapid prototyping with Arduino UNO R3 compatibility
ATmega328P datasheet
DFRobot Arduino Compatible Microcontrollers Selection Guide
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