Trying to measure voltage but increasing value

Hello,
I created a quarter wheatstone bridge and am trying to use the change in voltage to determine the amount of strain in the strain gage. I am using a multimeter and measure the voltage between the two pins and am getting a reading that is usually 80 mV or around 100 mV. I know it should be 0 if the bridge is balanced but for some reason it isnt, so I am assuming my zero value is about 90.

However this is not my problem. Every time I connect cables from the breadboard to the analog input, it increases the voltage from 100 mV to around 2.5 V. Does anyone know why this is happening?

**video file was too large so im including pictures

img 3169 is the circuit not connected to the analog input and the multimeter reading 90 mV
img 3170 is the circuit connected to analog Ao5 and the multimeter reading 2.5 V

Thank you so much in advance

SS.ino (597 Bytes)

IMG_3170.JPG

IMG_3169.JPG

Please post a wiring diagram (much better hand drawn than Fritzing). Videos are of no interest.

Hi jremington, I just updated the post and included pictures

Do you really expect anyone to make sense of those photos? Post a clear, hand drawn wiring diagram, with pin and component labels.

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