So, to built this system, we start by building a wheatstone bridge separately. We make the difference of voltage at the middle zero as shown in the following schematic:
For this we built a whitestone bridge and added a potentiometer. Then we changed the resistance on the potentiometer to make the difference in voltage at the middle of the whitestone brige zero, but we got close to 0.056 V.
Below is a closer picture of the wheatstone bridge with the potentiometer
After we built the whitestone bridge, we built the next part of the circuit.
At first we thought it wasn't working right, so we re-constructed it. And, it looked like this:
Then it worked and we got that it was inverting the voltage by a factor of -1. This corresponds with the values of our resistors.
Then we took a video of it changing.
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