v097pba8@ubvmsd.cc.buffalo.edu (Ken F Morton) (02/07/91)
I'm working on a drum pad interface and I thought this sub heading might prove more definitive of the project on this group. What I need is a circuit that will take voltage from a piezo element and 1) Close a contact immediately 2) Close another contact after a delay period related to the voltage of the trigger signal. This delay will be very small, I'm sorry I can't give the range in microseconds, it's less than one second. Anyone have any ideas? It must be a *very* responsive circuit. Thanks... Ken Morton v097pba8@ubvmsd.cc.buffalo.edu
grayt@Software.Mitel.COM (Tom Gray) (02/12/91)
In article <58290@eerie.acsu.Buffalo.EDU> v097pba8@ubvmsd.cc.buffalo.edu writes: } } I'm working on a drum pad interface and I thought this sub heading }might prove more definitive of the project on this group. } What I need is a circuit that will take voltage from a piezo element }and 1) Close a contact immediately 2) Close another contact after a delay }period related to the voltage of the trigger signal. This delay will be }very small, I'm sorry I can't give the range in microseconds, it's less }than one second. } } Anyone have any ideas? } As always a 555 set up as a monostable will do this. Reset the 555 with the sample pulse and use the sampled voltage as the reference signal to the 555.