this post was submitted on 31 Mar 2025
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Science Memes

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[–] yucandu@lemmy.world 27 points 2 days ago* (last edited 2 days ago) (4 children)

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.

[–] RogueBanana@lemmy.zip 2 points 1 day ago

That's cool, could you share some photos? The theramin I mean

[–] SupaTuba@lemm.ee 9 points 2 days ago

I admire it but also...wtf lol

[–] xthexder@l.sw0.com 2 points 2 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.

[–] jerkface@lemmy.ca 3 points 2 days ago

I made a potentiometer with paper and graphite clay once