Re: Ultrasonic sensor capabilities
In addition to timdavid's comments (total agreement) I recommend doing some experiments, with the sensor at short distances, and varying the angle between the US beam and the surface it's reflecting from. My experience indicates that at close ranges (under 20 cm), the sensor is very picky about alignment, and what the surface is made from. Factoring these effects into the algorithm for the pendulum robot, that makes for a very dynamic solution.
Originally Posted by cbix
FTC Judge: 2010
FLL Mentor & Coach Instructor: 2011-2014
FLL referee: 2012-2014
FRC judge (Chairman's Award): 2014