Sooo.. I am a complete novice, in way over my head.
I got pretty excited by the ability of PVDF to generate a piezo electric effect.
Details here:
www.media.mit.edu/resenv/classes/MAS836/Readings/MSI-techman.pdf
I was looking to use the pvdf film as a simple switch. However, it seems that that the output of this switch may be unreliable due to low pass filter effect. At least, so I was warned.
Can someone help me understand this: It is suggesting the need for a huge Giga Ohm impedance on the input.
However, here: www.media.mit.edu/resenv/classes/MAS836/Readings/MSI-techman.pdf
Page 43, ff: it suggest that the pvdf films are suitable for piano keys which is my intended project.
This
www.media.mit.edu/resenv/classes/MAS836/Readings/MSI-techman.pdf
again suggests problems with detecting strikes, or low frequency events.
So. I'm all confused. Are 3mm x 12 mm film segments suitable for detecting a keystrike/deflection?
What should I do about the impedance, if I wished to incorporate this into an arduino project?
Thanks a ton in advance.
I got pretty excited by the ability of PVDF to generate a piezo electric effect.
Details here:
www.media.mit.edu/resenv/classes/MAS836/Readings/MSI-techman.pdf
I was looking to use the pvdf film as a simple switch. However, it seems that that the output of this switch may be unreliable due to low pass filter effect. At least, so I was warned.
Can someone help me understand this: It is suggesting the need for a huge Giga Ohm impedance on the input.
However, here: www.media.mit.edu/resenv/classes/MAS836/Readings/MSI-techman.pdf
Page 43, ff: it suggest that the pvdf films are suitable for piano keys which is my intended project.
This
www.media.mit.edu/resenv/classes/MAS836/Readings/MSI-techman.pdf
again suggests problems with detecting strikes, or low frequency events.
So. I'm all confused. Are 3mm x 12 mm film segments suitable for detecting a keystrike/deflection?
What should I do about the impedance, if I wished to incorporate this into an arduino project?
Thanks a ton in advance.