I wasn't able to find here any projects on measuring weight, so i thought i'd post my own idea and will see what you can suggest.
for the sensor i found this - http://www.amazon.com/gp/product/B006W2 ... AZDOWP300U
from the description i understood that it takes 5-10V in (that's how I understand "excitation voltage"), and what it puts out deepens on the weight. I also think that the output is analog, so I decided to buy http://www.amazon.com/gp/product/B00AZV ... UCHGRDBQ0Z (I know you can get it cheaper, but i will have ai all shipped to me at once from amazon, and i don't have to pay extra for shipping if I order for more than $35) here are the specs on it - http://ww1.microchip.com/downloads/en/D ... 21295d.pdf
Now, are is the questions.
1. wiring. it should be pretty straight forward (in-out), or does it have to be a more complicated wiring ?
2. coding. I guess I would have install the SPI libraries for GPIO, and write some extra code. Any code samples here on how i would interface that SPI GPIO library ? Maybe somebody has done something like this before, would you share the code.
Thank you in advance for answering my questions.