Load Cells - Help

Projects General Guidance
1

Hey, my names is Alberto.
I’m currently working on my high school thesis. My deadline is in 2 weeks and i’m having some trouble.
I’ ve bought this scale (http://www.amazon.it/gp/product/B0033XCC34?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00) and the INA125P needed. I’ ve disassembled my scale and i’ ve found 4 load cells, each one with 3 wires in output (VCC, GND and data, i think). I think each one has its job: E+, E-, S+, S-. We have 2 more wires for power and 2 more for switching from kilos to libre.

I need to understand how to connect, or eventually, disconnect the cables from the load cells and decide the gain of the IC. I have to read the value from my Arduino pin, and then calibrate it via software.

Could you help me?

Photos: Imgur: The magic of the Internet

Thank you in advance for your attention. The attachments explains better.

Best regards,

Alberto

2

Do a search of the forum for "3 wire load cell".

3

I did it, but i couldn't find anything i need. Is it right that we have 3 wires: VCC, GND and DATA? Can't i simply take the four data cables, amplify these (maybe create a Wheatstone bridge before the amplification [<- Yes, i'm not good in electronics]) and then read to Arduino?

Thanks