A developer device includes two developer rollers arranged opposite to an image carrier. Range-based data is largely independent of color image data, and hence not adversely affected by the limitations associated with color-based segmentation, such as shadows and similarly colored objects. Wagering may be promoted by notifying the user of an opportunity to place a wager on a given race. A capacitance couples the switch node to a current signal node to provide a combined signal on current output, the combined signal including the low side current and timing information. Blade pitch control means are provided at the torus.