weight sensor

May 18, 2008 2 Replies
J

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.


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T

Digital fishing scales? To make a 1 off is gonna cost loads . When you make

100K off bathroom scales, the cost heads towards zero, like all electronics. Do you want a one off, or something you can put into production? For a one off, rip apart the fishing scales....
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J

Thanks for taking the time to reply. I want to prototype an idea I have and if the idea truns out to be a good one then perhaps go into low volume production. My problem is that I am a computer programmer not an electrical engineer. So I am trying to find low cost components that I can assemble on a bread board for a prototype.

I did find this at

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Model CZL902 =========== Rated load: 50KG rated output: 1.0+-0.15MV/V dimensions: 34*34*7.8(mm) Cable spec: 0.8*420mm

To my simple non-ee mind it looks like this might be useable out of the box. I am hoping to find one I that I can just read the voltage and then compute the weight.

jim

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