DFRduino Uno R3

The DFRduino Uno V3.0 from

DFRobot

is a compact physical world computing board for learning or development. It is a simple microcontroller board fully compatible with the Arduino UNO R3 and

Arduino IDE

open-source development environment. This environment implements the Processing / Wiring language. Arduino can be used to develop stand-alone interactive objects or can be connected to software on your computer (e.g. Flash, Processing, MaxMSP). The open-source IDE can be downloaded for free (currently for Mac OS X, Windows, and Linux).

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 place it on a finished, more compact project. The cool thing about our new DFRduino microcontroller is that the headers use different colours to feature I/O ports of different types:

• Red for Power Section
• Blue for Analog I/O
• Green for Digital I/O

These colours match our sensor cables. This makes it really easy to figure out where to connect sensors or to identify which side is Analog (blue) or Digital (green).

The ‘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 robust 

printer-style USB cable

or power it with an AC-to-DC adapter or battery to get started.

This board added SDA and SCL pins that are near the AREF pin and two other new pins placed near the RESET pin, the IOREF that allow the shields to adapt to the voltage provided by 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’ which operate with 3.3V. The second one is a not connected pin, that is reserved for future purposes.

Specifications

• 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 is used by bootloader
• SRAM: 2 KB (ATmega328)
• EEPROM: 1 KB (ATmega328)
• Clock Speed: 16 MHz
• Size: 75 x54 x15 mm
• Environment Friendly: Rohs Compliance

Resources

• ATmega328P datasheet

Package Contents

• 1x DFRduino Uno