Thanks for the reply. I would like to make sure that I understood correctly= ..=A0 I have to set the rail levels such that the output does not exceed 5V. I sh= ould read the opamp output and filter out the noisy data? Sai ________________________________ From: RussellMc To: Microcontroller discussion list - Public. =20 Sent: Tuesday, February 12, 2013 9:09 PM Subject: Re: [EE]: Opamp based circuit design =20 > I am using a Fabric Pressure sensor in my project that could be read usin= g a potential divider arrangement. > ... the change in resistance is really small when this sensor is subjecte= d to several cycles of stress/strain. >... there is a sudden change in resistance when the fabric is stretched/co= ntracted. Sounds like an ideal target for a microcontroller. Amplifier set so as to never rail. A2D acquire to memory. Play until tender. R --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .