I encourage everyone to think about using the summer/fall to improve the sensing capabilities of their robots. Some of us have a vision of the future that includes full utilization of all three elements of the "sensing-mobility-manipulation" pyramid. Those who can see their way to learning about these technologies will probably find it a worthwhile pursuit.
When you have integrated a few sensors on your robot, you may want some exercises to better understand what you can do with them. I would like to suggest
this reference as a starting place to look for a few ideas.
-dave