ok i found how to solve my pb :
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user has to make party of the group "dialout"
sudo usermod -a -G dialout user_name
(thanx to Louis-Maurice !) -
download IDE from the website (v. 022) and run it
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select ttyACM0 serial port
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have fun !
Don't use the IDE version (018) that debian porpose, that doesn't work.
Thank you melis and Louis-Maurice