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Message: 2
Date: Thu, 23 Jun 2011 12:00:52 +0100 (BST)
From: padawa...@obiwannabe.co.uk padawa...@obiwannabe.co.uk
Subject: Re: [PD] Piezo, trigger, Arduino
To: richard duckworth richduckwo...@yahoo.com, pd-list@iem.at
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Message: 2
Date: Thu, 23 Jun 2011 12:00:52 +0100 (BST)
From: padawa...@obiwannabe.co.uk padawa...@obiwannabe.co.uk
Subject: Re: [PD] Piezo, trigger
Piezo elements (the round, gold-coloured bell-buzzer type) make excellent
triggers. Drumpads like the Roland SPD-n type use these as the triggers.
Modifications need to be done to create a reliable trigger. The mechanical
integrity of these devices can be a problem: the leads can literally
Ever tried the kind of high voltage piezo you get in
cigarette lighters? MaybeY you can drop that across some high
value resistors to get an input suitable for an opamp stage.
You would need to remove the spring loaded housing.
They would be highly robust and able to
take a beating from a
Thank you all for your advice.
@Roman : what type of op-amp do you use?
Thanks!
Pierre
2011/6/17 Michael Shiloh michaelshiloh1...@gmail.com
Are you using piezo sensors? :-)
Try this for starters:
http://www.arduino.cc/en/Tutorial/KnockSensor
Note that there are other types of piezo
Oops. Sorry, i meant Martin, obviously.
2011/6/22 Roman Haefeli reduz...@gmail.com
On Wed, 2011-06-22 at 15:06 +0200, Pierre Massat wrote:
Thank you all for your advice.
@Roman : what type of op-amp do you use?
I guess, it was Martin Peach who suggested using an op-amp. However, I
On Wed, 2011-06-22 at 15:06 +0200, Pierre Massat wrote:
Thank you all for your advice.
@Roman : what type of op-amp do you use?
I guess, it was Martin Peach who suggested using an op-amp. However, I
think many common ones will do.
Roman
___
Hello, (some time lurker, first post)
On 17/06/2011 14:27, Pierre Massat wrote:
Dear List,
This is yet another question about Arduino. Sorry about that.
I want to use piezos to trigger samples using my arduino board. I want the
trigger to be sensitive, and a quick google search seems to
Hi Pierre
Actually, I wouldn't connect the piezos to an arduino, but to a sound
card, because the piezos will likely give very very short spikes and the
sampling rate of the analogIns of the arduino is quite low (don't know
the exact value) compared to the sampling rate of a common sound card.
Hi Roman, thanks for your reply. I'm afraid i can't use a soundcard to
capture the input from the piezo (I don't want to buy one just for three
little triggers). If what you're saying is true i guess i will just use
three switches and forget about the sensitivity.
Pierre
2011/6/17 Roman Haefeli
ej pierre regarding sensitivity a FSR = force sensitive resistor might be
interesting as well?!
salutis
ø
On 06/17/2011 03:15 PM, Pierre Massat wrote:
Hi Roman, thanks for your reply. I'm afraid i can't use a soundcard to capture
the input from the piezo (I don't want to
buy one just for
I found that it works better if you put some kind of peak detector
op-amp circuit between the piezo and the arduino.
See the peak detector circuit in here:
http://www.st-andrews.ac.uk/~www_pa/Scots_Guide/audio/part8/Page3.html
The diode rectifies the signal and the capacitor stretches it out
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