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Virgin Physicists
(lemmy.world)
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.

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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.
I admire it but also...wtf lol
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.
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.
That's cool, could you share some photos? The theramin I mean