Strechable cord - what sensor for measure pulling force?

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hello.
i quite new arduino , hardware components.
i build case cord looking out of , harder pull cord, higher data value, send pc, should be.
alternatively, roll polyester cord inside case , value of how far pulled out cord. both ways fit project, yet not know kind of sensors , components achieve it. hope in right place ask.

thank you.

quote from: crazynexx on aug 04, 2017, 01:08 am
i build case cord looking out of , harder pull cord, higher data value, send pc, should be.
look @ load cells.

quote from: crazynexx on aug 04, 2017, 01:08 am
alternatively, roll polyester cord inside case , value of how far pulled out cord.
look @ "string encoder" or "stringpot". i've heard can diy 1 of these using 1 of retractable keychains.


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