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[on:]

hi, I have a problem with the communication between pc and arduino board.. I installed the arduino software but when I want choose the port on which arduino will communicate with pc, ttyS0 is the only port available.. I think that I need to use ttyUSB0 port, but it is not shown in the list.. can you help me?????

[Reply #1 on:]

It was discussed today:
http://arduino.cc/forum/index.php?topic=53292.new;topicseen#new

[Reply #2 on:]

sorry, I can't speak english very well and I don't understand how I can solve the problem.. can you make me a summary? 

[Reply #3 on:]

which version of ubuntu are you running?
Which arduino board and arduino software version? Uno requires at least arduino software version 0021.

[Reply #4 on:]

which version of ubuntu are you running?
Which arduino board and arduino software version? Uno requires at least arduino software version 0021.

os:          ubuntu 10.10
board:     arduino duemilanove
software: arduino IDE v.18

[Reply #5 on:]

I think that I need to use ttyUSB0 port

You are correct.  /dev/ttyUSB?

If the duemilanove has power
First thing I would do is try a different usb cable.
Then I would try running the arduino software as root (sudo arduino).
If running as root works:
    run the command "id" to ensure to you are a member of the dialout group. Add your user id to /etc/group if required
If running as root did not work (with the duemilanove plugged into the usb port):
    execute the command "dmesg".  look for a entry that looks like, "FTDI USB Serial Device converter now
        attached to ttyUSB0"
    execute the command "lsusb",  look for the entry, "Future Technology Devices International, Ltd FT232 USB-Serial (UART) IC"

Post the output of these command.

[Reply #6 on:]

I think that I need to use ttyUSB0 port

You are correct.  /dev/ttyUSB?

If the duemilanove has power
First thing I would do is try a different usb cable.
Then I would try running the arduino software as root (sudo arduino).
If running as root works:
    run the command "id" to ensure to you are a member of the dialout group. Add your user id to /etc/group if required
If running as root did not work (with the duemilanove plugged into the usb port):
    execute the command "dmesg".  look for a entry that looks like, "FTDI USB Serial Device converter now
        attached to ttyUSB0"
    execute the command "lsusb",  look for the entry, "Future Technology Devices International, Ltd FT232 USB-Serial (UART) IC"

Post the output of these command.

If I running arduino with "sudo arduino" it show me "ttyUSB0"!!! now pc and arduino can communicate!! thank you

[Reply #7 on:]

Your welcome