Electrical

DC Motors and Their Control - A great powerpoint presentation about DC motors, how they work, and how to implement them on a robot.
National Instruments cRIO-FRC II Operating Instructions - A great page provided by National Instruments on how to operate and maintain your cRIO component on your robot. Gives details on how to safely mount and wire your cRIO as well as how to safely attach necessary components to it.
E4P OEM Miniature Optical Kit Encoder  - Purchase details and operating instructions on how to use this specific optical encoder kit on your FRC robot. Gives assembly details as well as contact information to the company if it needs to be repaired or replaced.

MB1010 LV-MaxSonar®-EZ1™ Purchase and Quick Start Guide - Cheap high quality FIRST legal ultrasonic sensor. Page contains specifications of sensor, purchase information and information on how to attach and use on your robot.