Ultrasonic is a bit more expensive, but is it worth it?
I want to use a 180? rotating servo with two Sharp IR sensors on top, and use this to navigate and later on even make maps.
What is best for this application? 2 ultrasonic sensors (= sonar?) or two IR sharps?
I know the range is better, but what about the speed? I want to ratate that servo asap, to have a higher map-refresh rate. Which is faster, IR or US?
Any other things I should know?