Artful Variable Resistor Built Out of Scavenged Junk

I love seeing old junk repurposed into something new and useful, and our readers are no strangers to scavenging components from otherwise valueless devices. But what about building the component itself from garbage? That’s exactly what janitor Crvknight did to make this surprisingly artful variable resistor.

Variable resistors (usually in the form of potentiometers) are such ubiquitous and inexpensive components that most of us would probably never even consider making our own. If you don’t have a potentiometer on hand and don’t want to wait for delivery, you might pull one out of an old appliance. But actually making one? That’s new.

Crvknight built this one using supplies that seem to have been collected from their place of employment — likely things that were being thrown out. Those supplies include coat hanger, copper wire, and the graphite rods from No.2 pencils.

They then used those to form what is...

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