i'm just afraid to try the square wave because i'm afraid to break my sensor.
but one of us first picked up a pair of Murata 40kHz transducers about thirty years ago
Hi. I just want to know if it is possible to output 25 kHz sine wave using arudino Duemilanove? I will use it to drive my ultrasonic sensor. Thanks!
Did you get an answer to your original question?
then what could be the best way to do?
and amplifier for the square wave?
to account for the overheads of "digitalWrite".