Accelerometer and hall effect sensors

I’m kinda new to this programming thing so i have some questions. I downloaded Kevins code to use during autonomous mode on our bot. However we just don’t have the budget to buy gyros or encoders. So i was wondering if its possible to use the Accelerometer and hall effect sensors provided with Kevins code to run autonomous?..if someone could set me straight on this that would be appreciated.

I’m not as familiar with Kevin’s navigation code as I ought be, but I know that you can use his encoder library with the Hall Effect sensors.