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thanks for all your help i think the problem changed somehow from

failed to open prot devttyusb0 to: failed to contact device with error [Error reading from SCI port. No Data ] Please check if create is powered on and the connector is plugged into into the create

so i think this problem is solved i will open a new question and accept this on as correct

ps: udev rule looks like yours, the user owns the group dialout

ls-al for /dev/ttyusb0 crw-rw---- 1 root dialout 188,0 ....

thanks to all of you for all your help i think the problem changed somehow from

failed to open prot devttyusb0 to: failed to contact device with error [Error reading from SCI port. No Data ] Please check if create is powered on and the connector is plugged into into the create

so i think this problem is solved i will open a new question and accept this on as correct

ps: udev rule looks like yours, the user owns the group dialout

ls-al for /dev/ttyusb0 crw-rw---- 1 root dialout 188,0 ....