[Donut]

First, for all teams thinking of traveling distances based purely on dead reckoning from timing, I would recommend against it. My team has not been able to get distance sensors working either year and has tried this both years; it is inaccurate, varies by battery voltage and other factors, and takes alot of testing and tweaking to get it somewhat close to right.

The gear tooth sensors this year were deisgned so they could be mounted directly into the transmissions provided in the kit (there are pictures in the Guidlines and Tips section that show where the sensors should be mounted). Wiring diagrams and instructions are also available. If you do not use the provided transmissions, you will have to find your own way of mounting the gear tooth sensors and putting them close enough to a gear to read it. The sensors basically sense when a gear tooth is in their magnetic field, and this information can be used to find distance traveled. Using timers, you can also develop ways to find speed.