Hey, all. I'm looking for an inexpensive load cell/force transducer/force cell (they go by various names). I tried yanking one from a cheap Walmart digital bathroom scale, but for some reason, I can't get much sensitivity out of it (I've tried standing on it and squeezing it with pliers, and the resistance only changes by a ten-thousandth of an Ohm). Most of the load cells I've found online are for industrial purposes, and they're like $200 and up. I'm thinking like under $20, but I've had no such luck. Where do digital scale manufacturers get their parts?
Alternatively, I was thinking of using a force sensitive resistor such as the following:
http://www.trossenrobotics.com/flexiforce-25lb-resistive-force-sensor-4inch.aspx?feed=Froogle
However, the Wikipedia article on them mentions that they might be damaged by prolonged exposure to a weight, which would pose a problem for my application. Anyone have any experience with these and their durability?
Thanks a bunch, all!!!
Alternatively, I was thinking of using a force sensitive resistor such as the following:
http://www.trossenrobotics.com/flexiforce-25lb-resistive-force-sensor-4inch.aspx?feed=Froogle
However, the Wikipedia article on them mentions that they might be damaged by prolonged exposure to a weight, which would pose a problem for my application. Anyone have any experience with these and their durability?
Thanks a bunch, all!!!