Worked on the doors0 example: problems with the error in the ultrasonic ranger.
Started to work on the deadReckoningNav0 example: problems with the error in the ultrasonic ranger.
Started to work on the deadReckoningNav0 example.
Worked on the deadReckoningNav0 example for the "Room Navigation" lesson.
Continued working on the deadReckoningNav0 example for the "Room Navigation" lesson.