This board features the ATmega16U2 programmed as a USB-to-serial converter. An added bonus is that our DFRduino is still using the DIP package AVR Chip. You could remove it to update or reprogram the chip's firmware, or even to place it on a finished, more compact project. The cool thing about our new DFRduino microcontroller is that the headers use different colors to feature I/O ports of different types:
- Red for Power Section.
- Blue for Analog I/O.
- Green for Digital I/O.
"Arduino Uno" is a microcontroller board based on the ATmega328. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
This board added SDA and SCL pins that are near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board. In future, shields will be compatible both with the board that use the AVR, which operate with 5V and with the "Arduino Due" that operate with 3.3V. The second one is a not connected pin, that is reserved for future purposes.
DFRduino UNO R3 Related Projects:
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How To a Make Bluetooth Tank for Arduino with Custom Android Application (V1.0)?
Arduino Project - Make an Arduino Intervalometer For Timelapse Photography
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How to Build a Robot – Lesson 1: Introduction
How to Build a Robot Lesson 2: Build a Basic Robot with Arduino
How to Build a Robot Lesson 3: Build a Line Tracking Robot with Arduino
How to Build a Robot Lesson 4: Build a Robot That Could Avoid Obstacles with Arduino
How to Build a Robot Lesson 5: Build a Robot With Light And Sound Effects with Arduino
How to Build a Robot Lesson 6: Build a Robot That Could Monitor Environment with Arduino
How to Build a Robot Lesson 7: Build a Bluetooth-Controlled Robot with Arduino
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DFRduino UNO R3 Project 4 Arduino Projects: Zelda Song Player
Things you may need in this project: Hardware components
- DFRobot DFRduino Uno R3
- DFRobot Input Shield for Arduino
- DFRobot Gravity: Digital Speaker Module
- Arduino UNO & Genuino UNO
DFRduino UNO R3 Project 5 How To Make LED Kitchen Sink Lights with a PIR Sensor, Arduino, and 3D Printing
 |  |  |  |  | |
| Name | DFRduino UNO | DFRobot Leonardo | DFRobot Mega 2560 | Romeo V2 | Romeo |
| SKU | DFR0216 | DFR0221 | DFR0191 | DFR0225 | DFR0004 |
| Microcontroller | ATmega328p | ATmega32u4 | ATmega2560 | ATmega32U4 | Atmega328 |
| Working voltage | 5V | 5V | 5V | 5V | 5V |
| CPU Frequency | 16MHz | 16MHz | 16MHz | 16MHz | 16MHz |
| TIO ports / PWM | 6 / 14 | 7 / 20 | 54 / 15 | 20 / 7 | 14 / 6 |
| Analog inputs | 6 | 12 | 16 | 12 | 8 |
| UART | 1 | 2 | 4 | 2 | 1 |
| I2C | 1 | 1 | 2 | 3 | 3 |
| SPI | 1 | 1 | 1 | 1 | 1 |
| Interrupt pins | 2 | 2 | 2 | 2 | 2 |
| EEPROM[KB] | 1 | 1 | 4 | 1 | 1 |
| Flash[KB] | 32 | 32 | 256 | 32 | 32 |
| SRAM[KB] | 2 | 2.5 | 8 | 2.5 | 2 |
| USB | A-B USB cable | micro USB cable | A-B USB cable | micro USB cable | A-B USB cable |
| Dimension | 75*55*15mm | 75*55*15mm | 100*53*15mm | 89*84*14mm | 90*80*14mm |
| Vin | 7-12V | 7-12V | 7-12V | 7-12V | 7-12V |
| Price | $19.9 | $19.9 | $24.9 | $34.95 | $29.5 |
| Weightg | 45 | 50 | 70 | 80 | 80 |
| IDE version | Arduino 1.0 and above | Arduino 1.0 and above | Arduino 1.0 and above | Arduino 1.0 and above | Arduino 1.0 and above |
| Feature | DFRduino UNO is fully compatible withArduino UNO R3,suitable for Arduino beginner and hobbyists | DFRobot Leonardo is a low cost controller, integrated with Xbee and SPI. Suitable for low cost and communication demand of hobbyists | DFRduino Mega has 54 digital pins and 16 analog pins, 4 UART channels. Suitable for demands of vast sensors | Use ATmega32u4, 2 serial ports. Intergrated with Xbee socket and motor drivers | Microcontroller with motor driver, communication ports, IO expansion ports, it can be used as the main controller of robots |
Specification:
- Microcontroller: ATmega328 (DIP Package)
- Operating Voltage: 5V
- Input Voltage (recommended): 7 ~ 12V
- Input Voltage (limits): 6 ~ 20V
- Digital I/O Pins: 14 (of which 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 of which 2KB used by bootloader
- SRAM: 2 KB (ATmega328)
- EEPROM: 1 KB (ATmega328)
- Clock Speed: 16 MHz
- Size: 75 x54 x15 mm (2.95 x2.13 x0.59")
- Environment Friendly: Rohs Compliance
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