Datasheet

First start with the FT232H board disconnected and open a terminal to run the following command to list all serial ports.

ls /dev/tty.*

You should see a list of devices, such as:

/dev/tty.Bluetooth-Incoming-Port /dev/tty.usbmodem20

/dev/tty.Bluetooth-Modem /dev/tty.usbmodem22

/dev/tty.usbmodem1d111 /dev/tty.usbmodem24

Now connect the FT232H breakout to the computer, wait a moment, and run the same ls command again. You should see a new

device in the list, such as:

/dev/tty.Bluetooth-Incoming-Port /dev/tty.usbmodem20

/dev/tty.Bluetooth-Modem /dev/tty.usbmodem22

/dev/tty.usbmodem1d111 /dev/tty.usbmodem24

/dev/tty.usbserial-0000111D

The new device, /dev/tty.usbserial-0000111D, is the FT232H serial UART. You can use this device with a program like screen to

open a serial connection. Run the following command in the terminal to open the serial UART:

screen /dev/tty.usbserial-0000111D 9600

Replace the /dev/tty.usbserial name with the name of the device you found after running the ls commands above. The 9600 after

the name is the baud rate to open the screen connection.

Once screen opens the connection you should see a blank screen. Try typing characters and you should see them echoed back

in the terminal. Congratulations, your serial loopback test is a success!

You can exit screen by pressing Ctrl-a and then Ctrl-\.

Linux

On Linux distributions such as Ubuntu 12.04 or 14.04 you can run terminal commands that are very similar to those shown above

for Mac OSX. The only difference is that you should run the following ls command to list serial devices:

ls /dev/tty*

Run the above command before and after plugging in the FT232H breakout to find the path to the new device that was added.

On a distribution like Ubuntu you will typically see a path like /dev/ttyUSB0.

To open the serial port use the exact same screen command as mentioned above for Mac OSX. Replace the path parameter

with the path to the FT232H device you found above.

Note you might need to press Ctrl-a and then \ to quit screen on Ubuntu or other Linux distributions.

Other Serial UART Uses

You can use the serial UART on the FT232H just like you would any FTDI friend or similar USB to serial UART. Remember the

FT232H breakout can work with 3.3 volt and 5 volt boards (that accept a 3.3 volt input as most do) so it's perfect for connecting to

small embedded Linux boards like the Raspberry Pi.

For example to connect to a Raspberry Pi just connect the FT232H ground to Raspberry Pi ground, D0 (TX) to Raspberry Pi

RX, and D1 (RX) to Raspberry Pi TX like below: