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catching Arduino UNO output
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Joined: 01 Jul 2003
Posts: 5350
Location: France, Old Europe

PostPosted: Wed Sep 17, 2014 11:00 am    Post subject: catching Arduino UNO output Reply with quote


I have Arduino's so-called IDE running and serial comms works fine in both directions with the serial monitor feature. The Uno is logging data to the serial port once a second.

Now I need to get this to a text file

I expected to be able to 'cat' or tail the device but cat return immediately with no output and tail sits there looking dumb, waiting for something that never happens.


 ls -ail /dev/ttyACM0
30634 crw-rw---- 1 root uucp 166, 0 Sep 17 12:46 /dev/ttyACM0

cat /dev/ttyACM0

Groups are correct and that device name works fine from the IDE. I exited to IDE too just in case there was conflict.

If I restart the IDE I find the Uno is still there merrily chucking out data.

IDE puts this to console when I start up
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7

Am I missing some additional setup commands from bash?

TIA, Gentree. 8)
Linux, because I'd rather own a free OS than steal one that's not worth paying for.
Gentoo because I'm a masochist
AthlonXP-M on A7N8X. Portage ~x86
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