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Piezo Trigger

Early stage of my electronic midi biscuit tin drum. Programmed the chip (16f628) to count the amount of hits on the 'drum' and display it on LEDs.  
 
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gunny2020 (10 months ago) Show Hide
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You made a fcking counter with a piezo crystal! That's so ingenious, I love it!
Joni0001984 (1 year ago) Show Hide
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Fantastic! What do they do?
Sixta16 (1 year ago) Show Hide
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Thats kool.. Good idea, connect to the trigger some counter :D

4 noobs, the sensor is normal piezo-electric module...
JuanCarreras1 (1 year ago) Show Hide
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Whats the prise for a cheap trigger module?
Please let me know
Thanks.
jozh90 (7 months ago) Show Hide
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Next to nothing.
jasonofcompsci (1 year ago) Show Hide
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Home made you say. Where do you get one. My physics prof. says that you can get them from the greeting cards that play annoying music. It's just a cheap piezo speaker.
elMick (1 year ago) Show Hide
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Yeah, piezo disks are used in those, just hook one out of a musical card, or get one from a piezo speaker. You can probably buy them in radioshack aswell.
HLSDK (2 years ago) Show Hide
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My friend! They can put out thousands of volts I hear.


The output impedance is so extremely high though. Many people hook them up through transformers to lower the impedance, but that also steps down the voltage drastically
elMick (2 years ago) Show Hide
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Thnx! they can put out up to 40 volts! Ive built an amp to give a pressure reading. i could just differenciate this for velocity. Its took a back seat for a while cause of uni though!
mekarer (2 years ago) Show Hide
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This counter is nice!
But can u sense the punch? and sample and hold the peak value?
That should be cool, if u have a piezo trigger, u need it to send velocity to the module...

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