Thanks for the help thus far. I've encountered a new issue (?). I've successfully tested the load cell with a multimeter to verify increasing load increases millivolts slightly (starts at 0.7 mV and can get it to like 4.0 mV). I've hooked it up (I think) to the Arduino with guidance from everywhere (http://www.instructables.com/id/Arduino-Load-Cell-Scale/step2/The-Amplifier/, Liquid Filling Machine – Liquid Filler Part 2 – Hardware To Software, Making a scale for Arduino with INA125, etc.) but seem to be having a lot of trouble with the calibration.
To explain the picture a bit, the four red wire coming from the top go into the load cell and from left to right are E+, E-, S-, and S+. The yellow wire on the bottom and the green wire are what I've been testing with the multimeter. Basically I can't get any other reading out of them other than ~74mV regardless of what resistor I put across the Rg pins (8 and 9). In this setup I have nothing but I've used 1k, 10k, 220 resistors and they all produce ~74mV when testing.
What am I doing wrong here?
