Hello,
I bought a velostat sheet (http://www.adafruit.com/products/1361) to make a matrix pressure sensor with Arduino.
Every thing works, but now I'd like to convert read voltage in pressure.
For that I need a curve of resistivity VS pressure of the sheet.
Do you have that ?
Velostat pressure/resistivity curve
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- adafruit_support_bill
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Re: Velostat pressure/resistivity curve
No. The product is not specifically designed for pressure sensitivity, so there is no spec for it. In practice, sensitivity seems to vary quite a bit from sample to sample, so you would need to calibrate each one separately.
- atricault
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- Joined: Fri Mar 06, 2015 7:10 am
Re: Velostat pressure/resistivity curve
OK, thanks for your quick réponse.
Perhaps you have an idea if the curve is linear?
Perhaps you have an idea if the curve is linear?
Last edited by atricault on Fri Mar 06, 2015 8:41 am, edited 1 time in total.
- adafruit_support_bill
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Re: Velostat pressure/resistivity curve
I don't believe it is linear. If it is, it would be only over a small range.
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