Ok, glad to hear you have solved it.
It is not solved...
I can't help debug if you don't answer my questions
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I've been answering other emails, but am working on it.
Well it been over 1 hour.
Will you try this sometime today?
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He probably won't, too busy with ?????
But have you proved it by doing what we call divide and conquer?
I just checked average of arduino output and it does not correlate to 76mV
I ask one last time. What did it print out?
I haven't tried that yet because i need to connect to the other arduino board, that should be done in 10 minutes or so.
Do you understand what I am asking you to do?
If not just say so, maybe I was not clear.
I got it set up and ran it, and stretched the averaging from 16 all the way to 500. This did work out to a near steady .070 mV, while the multimeter still shows 0.76, and the sensor should be reading .0765 or so. So it made a huge difference, but I'm disappointed by the implications for the response time and accuracy of the sensor. Thanks for the help! Still wondering why it isn't at least 76mV though.
The wire I'm using isn't shielded...
That is because the Arduino is measuring the voltage relative to it's 5V supply voltage.
If you are using USB power for the Arduino then the 5V could be anywhere between 4.75V and 5.25V.
Plus the Arduino R3 ADC LSB is around 5mV so you could be off bu that much
If you want accurate readings then you need to calibrate the sensor/Arduino and/or use a good external voltage reference.
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Thanks!
Hi, @wpmjr
Can you post some images of your project?
So we can see your component layout.
What device are you measuring the pressure of?
Thanks... Tom.... 
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