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This is a basic breakout board for the FTDI FT232RL (3.3VIO) 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 this 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.
The
pins labeled BLK and GRN correspond to the colored 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.
This
board was designed to decrease the cost of Arduino development and
increase ease of use (the autoreset feature rocks!). Our 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 3.3VIO but you can
cut the default trace and add a solder jumper if you need to switch to
5VIO.