How would I calculate the force from an FSR using the Wheatstone bridge? I'm not sure of the design or programming part.
Since FSRs are very nonlinear, they aren't recommended for measuring forces.
You might be able to get some useful data from one, if you make careful measurements of force versus resistance and fit some sort of function to the points.
Do you know how to calculate the force though?
If you are at all able to fit a function to a measured set of force versus resistance data, the function directly gives the (estimated) force for a measured resistance.
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Hi, @goober1234567890
Welcome to the forum.
What is your project?
As already stated, FSR are not very good at calibrated force measurement.
Thanks.. Tom... 
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