The SparkFun RedBoard is an Arduino-compatible board that is perfect for use with the Vernier Arduino Interface Shield. It is a surface-mount board, which is pin-for-pin compatible with a R3 3 Arduino layout. The key difference between the RedBoard and most Arduino boards is that it uses a mini-B USB connector instead of a full-size, type-B USB connector.
The RedBoard operating voltage is 5 volts, which is required for use with most Vernier sensors. Users can power the RedBoard either with the USB connector (included) or with a 7-15V barrel jack power supply (not included).
To use Vernier sensors with the SparkFun Redboard, users will need the Vernier Arduino Interface Shield.
Dimensions: 2.7 x 2.1″ (68.58 x 53.34mm)
USB-to-Serial Chip: FTDI FT232RL
Main Processor: ATmega328
Flash Memory: 32kB
Clock Speed: 16MHz
Operating Voltage: 5 volts
Digital I/O Pins: 14 (6 PWM outputs)
Analog Inputs: 6
USB Connector: USB Mini-B cable (included)
Barrel jack power connector: 5 mm, with 2.1 mm center pole (center pole +, 7 to 15 V supply)
What’s Included: SparkFun RedBoard with cable and Mini-B USB cable (1.5 m long).