The FTDI Basic Breakout (5VIO) is a basic breakout board for the FTDI FT232RL USB to serial IC. The pinout of this board matches the FTDI cable to work with official Arduino and cloned 5V Arduino boards. It can also be used for general serial applications. The major difference with the FTDI Basic board is that it brings out the DTR pin as opposed to the RTS pin of the FTDI cable. The DTR pin allows an Arduino target to autoreset when a new Sketch is downloaded. This is a really nice feature to have and allows a sketch to be downloaded without having to hit the reset button. This board will auto reset any Arduino board that has the reset pin brought out to a 6pin connector. This is the newest revision of Sparkfun's FTDI Basic Breakout Board. They now use a SMD 6pin header on the bottom which makes it smaller and more compact. Functionality has remained the same. The pins labeled BLK and GRN correspond to the coloured wires on the FTDI cable. The black wire on the FTDI cable is GND green is CTS. Use these BLK and GRN pins to align the FTDI basic board with your Arduino target. This board has TX and RX LEDs that make it a bit better to use over the FTDI cable. You can actually see serial traffic on the LEDs to verify if the board is working. The USB connector is a MiniB connector. The FTDI Basic Breakout was designed to decrease the cost of Arduino development and increase ease of use (the autoreset feature rocks!). Their Arduino Pro boards and LilyPads use this type of connector. One of the nice features of this board is a jumper on the back of the board that allows the board to be configured to either 3.3VIO or 5VIO (both power output and IO level). This board ships default to 5VIO but you can cut the default trace and add a solder jumper if you need to switch to 3.3VIO.
