At SparkFun we use many Arduinos and weāre always looking for the simplest, most stable one. Each board is a bit different and no one board has everything we want, so we decided to make our own version that combines all our favorite features. The SparkFun RedBoard combines the simplicity of the UNOās Optiboot bootloader (which is used in the Pro series), the stability of the FTDI (which we all missed after the Duemilanove was discontinued) and the R3 shield compatibility of the latest Arduino UNO R3.The RedBoard can be programmed over a USB Mini-B cable using the Arduino IDE: Just plug in the board, select āArduino UNOā from the board menu and youāre ready to upload code. RedBoard has all of the hardware peripherals you know and love: 14 Digital I/O pins with 6 PWM pins, 6 Analog Inputs, UART, SPI and external interrupts. Weāve also broken out the SDA, SCL and IOREF pins that showed up on the UNO R3, so the RedBoard will be compatible with future shields. This version adds an SMD ISP header for use with shields.You can power the RedBoard over USB or through the barrel jack. The on-board power regulator can handle anything from 7 to 15VDC. Check out the related items below for a compatible wall-wart power supply. Not sure which Arduino or Arduino-compatible board is right for you? Check out our Arduino Buying Guide!Features:ATmega328 microcontroller with Optiboot (UNO) BootloaderUSB Programming Facilitated by the Ubiquitous FTDI FT231XInput voltage - 7-15V0-5V outputs with 3.3V compatible inputs14 Digital I/O Pins (6 PWM outputs)6 Analog InputsISP Header32k Flash Memory16MHz Clock SpeedAll SMD ConstructionR3 Shield CompatibleRed PCB!Documents: SchematicEagle FilesFTDI DriversHow to Install FTDI DriversArduino IDE DownloadProduct VideoHookup GuideGraphical DatasheetRedBoard vs Uno Comparison GitHub (Design Files)
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