Accessing certain USB devices without root??!!

[rwgast]

Ok so hopefully some one out there can give me some help as Im sure the problem Im about to describe happens with outer devices than the ones im having trouble with.

I program micro controlleres and I have a usb to serial adapter which is basically a dongle that that plugs into usb and and makes a ttl level serial port. I also have a plain usb o rs232 cable (have no serial devices to test it though), and an avr usbasp programmer. When any program tries to access these devices to program the chips it fails. When I run as root everything is just fine... I need someway to access these devices without out duoing everytime I want to run avrdude or the propeller ide. The strange thing is usb sticks, usb hard drives and usb floppys all work fine system wide along with my BT module. The only devices doing this are devices that comunicate via serial some how.

[PabloTwo]

Serial devices are generally assigned owner:group of "root" and "dialout". You're USB>Serial dongle most likely is /dev/ttyUSB0.

BASH:~/-> ll /dev/ttyUSB0
crw-rw----. 1 root dialout 188, 0 Jun 25 19:19 /dev/ttyUSB0

Add your regular user to the "dialout" group and you should have no trouble accessing those serial devices without having to switch to root.

# usermod -a -G dialout username