Atari Paddle
from Wikipedia:
A paddle is a game controller with a round wheel and one or more fire buttons, where the wheel is typically used to control movement of the player object along one axis of the video screen. A paddle controller rotates through a fixed arc (usually about 330 degrees); it has a stop at each end.
The paddle wheel is usually mechanically coupled to a potentiometer, so as to generate an output voltage level varying with the wheel’s angle relative to a fixed reference position. A paddle is thus an absolute position controller. That is, without any previous knowledge, the sensor can be read and the result directly indicates the position of the paddle knob. This is in contrast to a quadrature encoder-based device or “spinner”.
source: wikipedia
the video has been removed from youtube, please resupport..
Hi fronten, youtube link of 1541 Ultimate are updated
http://www.nightfallcrew.com/?p=2673