This is a Rotary-Dial-to-USB-Interface, based on the USB AVR Lab
(http://www.ullihome.de/wiki/USBAVRLab/index).

This is a tiny board with an ATMEGA8 speaking USB using the V-USB
library. It features a 10-pin-port with some AVR pins routed out,
and also has a bootloader, so it can be programmed without an
ISP adapter, using USB.


The Rotary-Dial-to-USB-Interface expects a rotary dial to be attached against PB4/5.

The program expects the "idle"-switch to be open when the dial is idle, and to be closed
when the rotary dial is not in its idle position.
The "pulse" switch is expected to be closed most of the time, and to be only opened shortly
for each pulse.
(This can be adapted easily).

When attached to a computer, the device acts like a USB HID keyboard, no
additional drivers are needed.


If you want to enter the bootloader, then generate more than 17 dial pulses by
dialing a zero, not letting the dial go fully back into idle position yet,
and pulling it to zero again.



    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.

    For details, see main.c