![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjWb-Dy5nowmSnQniIKnC_ZSnpVqh4pqzfTewdykAKCzjCk0LOKn5pqeVvc2Zq99jk7SSLBkcCCZt_nHAxujMiVzDcSo1prZ-dyIGn934hyphenhyphenWGXQ6RqBXJGjYNQZmN9b3pWtroxJZQ/s320/DCP_8758.jpg)
While writing the program for this project, I discovered a neat little NXT-G trick. You know how you can't wire a value into a Time Wait block in an attempt to specify how long to wait (because the Wait block has no data hub)? Well, instead of using a loop and a timer to do a value-based time wait, you can use a single Sound block to play a tone with the time value wired into the Duration, Volume set to zero, and Wait for Completion checked, thus producing a silent delay of the requested time with just one block.