Thank you all for your advice.
@Roman : what type of op-amp do you use?
Thanks!
Pierre
2011/6/17 Michael Shiloh michaelshiloh1010@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 sensors, but this is the most common type and probably what you mean. May or may not come in the black plastic case.
They are also often called contact mics or piezo speakers. Best price is probably from those silly singing birthday cards. Ask your friends for their old ones and you'll probably get them for free.
I also find that most lo-fi audio equpiment uses these as speakers: cordless phones, answering machines, assorted beepers and buzzers. If you collect old junk for future component salvage (I do), you probably have half a dozen of these already.
Good luck and let us know what you make!
Michael
On Fri, Jun 17, 2011 at 5:27 AM, Pierre Massat pimassat@gmail.com 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 show that
piezo
is the way to go. Does anybody have any experience with piezo triggers (what type of piezo, isolating each piezo, etc.)? I will hit the piezos with my bare fingers
(no
drumsticks or anything like that), but i guess it doesn't really matter since i can control the threshold within Pd.
This last sentence is just to make sure that everyone knows i'm talking about piezos in case there wasn't enough occurences of the word in my message.
Cheers!
Pierre
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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
Oops. Sorry, i meant Martin, obviously.
2011/6/22 Roman Haefeli reduzent@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 think many common ones will do.
Roman
I use the MCP6024. It's a quad rail-to-rail single-supply high impedance input op-amp, which makes it easy to power from the arduino.
Martin
On 22/06/11 09:13 AM, Pierre Massat wrote:
Oops. Sorry, i meant Martin, obviously.
2011/6/22 Roman Haefeli <reduzent@gmail.com mailto:reduzent@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 think many common ones will do. Roman
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