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arduino MPR121
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arduino MPR121

by mohameddz on Sat Mar 07, 2020 8:35 am

Hello,

Is there anyone who can help me for how to measure the variation in capacity from 0 to 10pF with a sensitivity of 0.01pf (0.01pF reading = 1 from ADC, 10pF reading = 1000 from ADC) by using the Arduino's Adafruit_MPR121 library. I tried with this library using the filteredData(0) function with or without the AUTOCONFIG, with the AUTOCONFIG when I put a capacity of 1pF between input 0 and the ground I get a variation of 42 in ADC reading, normally if its working I well get a variation of 100.

mohameddz
 
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Joined: Sat Mar 07, 2020 7:58 am

Please be positive and constructive with your questions and comments.