Originally Posted by no skillz
Can you also measure the speed of groundstrokes with that little machine?
I would be interested to know how fast some of my forehands and backhands are.
You could do it in warm ups if you have a ball machine or a consistent hitting partner. Place the device behind you , and hit your shot in a direction perpendicular to its face.
Note that it picks up the first object in its field(at least 15 ft, may be more) that is moving faster than 35 mph(in pro mode) . The incoming ball and your racket should be slower than that. Most ground strokes slow down to less than 20 mph by the time the opponent hits them.