avrdude without sudo

/etc/udev/rules.d/90-usbasp-usbtiny.rules:

SUBSYSTEM=="usb", ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="05dc", GROUP="adm", MODE="0666"
SUBSYSTEM=="usb", ATTRS{idVendor}=="1781", ATTRS{idProduct}=="0c9f", GROUP="adm", MODE="0666"