Description: This 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 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 auto-reset 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 6-pin 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 auto-reset 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 3.3V or 5V (both power output and IO level). This board ship default to 5V, but you can cut the default trace and add a solder jumper if you need to switch to 3.3V.
Documents:
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