Does anyone know where I can get an low cost weight sensor? I have looked and looked and looked but can't find one anywhere. I know they exist since I can buy a digital bathroom scale for under $20 usa and the bathroom scale has 4 sensors (strain gages) built into it. Unfortunately a strain gage requires some kind of signal amplification that is beyond my limited abilities to assemble. What I would like to find is a component that has the strain gage and the signal amplification all build into it. The load would be in the 20 - 90 lbs range. thanks in advance to any and all that reply.