func NewRangeFinder(e, t int) RangeFinder {
var rf rangeFinder
rf.sensor = us020.New(e, t)
return &rf
}
func main() {
rangeFinder := us020.New(10, 9)
for {
distance, err := rangeFinder.Distance()
if err != nil {
log.Panic(err)
}
log.Printf("Distance is %v", distance)
time.Sleep(500 * time.Millisecond)
}
}