This document describes a tongue-operated wheelchair system called the Tongue Drive System (TDS). The system uses a small permanent magnet attached to the tongue and Hall effect sensors mounted outside the mouth to detect tongue movements. When the tongue moves toward a sensor, it sends a signal to the wheelchair's microcontroller to move in a corresponding direction. The system is intended to allow disabled individuals to freely move about using only their tongue. It discusses the design of the TDS and wheelchair, including the hardware components like sensors, motors, and microcontrollers. The goal is to provide a low-cost assistive technology solution to help disabled people navigate and complete daily tasks.