[sdiy] DIY Drums
Linium
intent at club-internet.fr
Sat Jun 1 21:10:15 CEST 2002
Hello,
Now that my MCU ATS904434 can send bytes to my computer thru RS232 i want to
build a DIY Drums trigger box with some piezo sensors. My aim is to have the
computer play some drums samples.
I am confident about writing the code for the multiplex builtin ADC but i
don't know yet how to build the electronic part between the piezo and the MCU.
I bet it should'n be that hard :)
Does someone know how to deals with this kind of sensor ?
I don't know how to limit the voltage since i read in the archive that the
output voltage can be very high when you hit hard the pad (which contains the
piezo thing), so any help welcome about this.
Next, do you thing that once the wave is half-rectified with a diode i need
to buffer it with a caps so that the MCU can read it, or should i write some
asm code instead to keep the highest sampled value in a window time and send
it to the computer ?
Well as you see i am still roaming in the no man's land of possibilities...
Thx for ur attention !
Linium
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