• yucandu@lemmy.world
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    5 days ago

    I used to make shunt resistors out of a pencil and a piece of paper. Rub pencil all over paper, cut strips to size of required resistance.

    EDIT: I mean megaohm resistors not shunt resistors. 20MOhm for DIY theramin.

      • TangledHyphae@lemmy.world
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        9 hours ago

        Confuses me that anybody would downvote you for this. I’ve made makeshift capacitors out of rolled aluminum foil. It’s dumb, but it worked for what I wanted (triggering a trackpad via stepper motors for testing microcontroller code.) Plus I just wanted to see if it even worked. Life = science experiments.

    • xthexder@l.sw0.com
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      5 days ago

      This is exactly how high precision resistors are calibrated. A laser is usually used to notch out bits of the resistor to tune it after it’s made.