Thank you for visiting. This page demonstrates and describes a Freescale HCS12 Autonomous Robotic Car. The mission of this project was to assemble a microcontroller onto a completely disassembled chassis. A Dremel was used to create additional specific hole cutouts for exact alignment of all components. Soldering was done underneath the chassis for battery holder and terminal posts. Li-ion 18650 batteries were chosen for power. Also, the final mission, which was the most complex was to code the HCS12 car to drive a track twice and stop within meters of the second crossing. I chose to use a RTI (real-time interrupt), two key-wakeup interrupts, and a TOF (timer overflow) interrupt. The embedded video will demonstrate that it worked as expected.