My schematic is divided in 4 different parts for easy understanding. First off, we have the power supply, it is composed of a screw terminal where the positive and negative end of a 3 cell, 11.1v LiPo battery will be placed. I have attached a LED after a resistor to serve as a power status light. This will serve as the power supply for the 5V regulator. The regulator section is composed of a 7805 (SOT-89 Form) voltage regulator. It has 0.1uF capacitor in its input and output as it is widely suggested, I plan to use the ceramic type. The regulator will supply the Teensy with a stable voltage that is within the manufacturer's specifications. Finally, I have the screw terminals for the analogs I/O pins. This will allow to perform an easy connection from sensors or other devices to the teensy.
A mini sumo can't be no bigger than 100mm in width and 100mm in length. My board must fit inside so we're trying to keep it in 90mm length x 50mm width, but I can further adjust as design changes. I also plan to implement power supply ports for our infrared sensors, they're 6 Sharp GP2Y0A21YK0F, each with a positive and negative end cable. Also planning to implement DC motor drivers to my board so I can control 2 DC motors from the supply of the battery. Is still a work in progress but I hope to receive the right feedback and consultation to have a working schematic.
