Hi,
I'm currently working on a pressure sensor that use resistor textiles, and my circuit is basically a voltage divider where one resistor is the pull up and the other one is the textile. The middle-point of the voltage divider is connected to the analog input of the Teensy 3.1, and my curves are very noisy, and actually I have tested the ADC with a constant voltage divider and it was also noisy, so I'm pretty sure the issue is not only from the sensor design.
However, I never worked with an ADC, and maybe I'm doing something wrong. So, I have looked on some topics which talk about reducing the bandwidth of the analog signal, which is already done by an anti-aliasing filter. Is there any others solution please? My ADC resolution is 8 bits, with the default average. Moreover, I don't know the impact if the default/internal reference?
Thank you so much.
I'm currently working on a pressure sensor that use resistor textiles, and my circuit is basically a voltage divider where one resistor is the pull up and the other one is the textile. The middle-point of the voltage divider is connected to the analog input of the Teensy 3.1, and my curves are very noisy, and actually I have tested the ADC with a constant voltage divider and it was also noisy, so I'm pretty sure the issue is not only from the sensor design.
However, I never worked with an ADC, and maybe I'm doing something wrong. So, I have looked on some topics which talk about reducing the bandwidth of the analog signal, which is already done by an anti-aliasing filter. Is there any others solution please? My ADC resolution is 8 bits, with the default average. Moreover, I don't know the impact if the default/internal reference?
Thank you so much.
