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Topic: avrdude: ser_open(): can't open device "/dev/ttyACM0": Permission denied (Read 113 times) previous topic - next topic


i am already in dialouts and everytime i try uploding sketch its says 

avrdude: ser_open(): can't open device "/dev/ttyACM0": Permission denied

i am using Ubuntu 18.04.2 LTS os so anyone that can help i have given every permission to the user and nothing at on point i got this messge cannot open source file serial.ada


Is your user a member of the dialout group? That is required to use serial ports under most linux distributions.
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OP said that that is the case ;) He/she did not say if he/she logged out and logged in again after adding to the dialout group.
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If you don't understand an example, don't use it.

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