Picture of Mho Better Resistor Value Decoder Plushie
Resistance is futile, at least in trying to figure out the value of your resistor if you do not have the color code memorized. 

I had one of these Adafruit Circuit Playground electronic component plushies laying around just waiting to be hacked.  So, thinking along the lines of the Resistor Value Helper Tie, having a resistor value decoder laying around would be pretty handy.  Also fun to use and get kids interested in electronics.

This is a simple task to create a set of stacked freely rotatable rings like a cryptex, affix the color coded bands, and mount them on the plushie.

Relax. meditate, do not fear divining the value of any unknown resistor, oooooooooooooooooooooooooooooohm...

Step 1: Just a few parts...

Picture of Just a few parts...
To mod your Mho Resistor plushie you need:

A piece of plastic pipe 1 1/2 inch diameter to cut into rings for the color bands.  I just got a kitchen sink tailpiece stub to use since it was cheap and I didn't need a whole long pipe to do any plumbing.  The 1 1/4 inch diameter pipe for bathroom plumbing may be too tight so don't get that.

There are many ways to cut plastic pipe.  If you don't have a power saw, a hand saw will work.  Even better if you have a tubing cutter for plastic pipe. If you are really desperate, a cotton string held tautly and sawed across the pipe will friction cut it.

Just be sure to clamp the pipe securely in a vise or something and block around it in a block of wood with a V channel cut in it so the round shape does not slip.

I think you can also attempt this project with metal or even cardboard tubing(paper towel/toilet paper rolls, electrical tape cores) if desired. I chose plastic since it would be more rigid and would not really wear out the fabric of the plushie.

Have a small file or some sandpaper to deburr the cut edges of the plastic.  No need to use solvents or solvent vapor like in smoothing out a freshly minted 3D print.

You will need sticker address label paper to print out the graphic for the color bands.  You can also use double-sided tape or a good glue to stick the printed graphic on regular paper  to the plastic tube.

Click on the graphic color chart image until you get to the original size file download area and download the image.
Raphango1 year ago
Great idea man! =D

narcoduck2 years ago
Just an odd snippet of information... The inverse of resistance (1 divided by the resistance) in a circuit is the conductance. The units for this used to be ohms flipped around to make MHOs, until it was standardised to Siemens. 10 Ohms resistance is 0.1 Mhos conductance.
caitlinsdad (author)  narcoduck2 years ago
Ah, inversely related to the capacitor plushie. The electron does not fall far from the tree branch circuit.
one question about reading resistor color codes:
How do you know which one of the sides has the first color?
caitlinsdad (author)  tgferreira1842 years ago
There is a little bigger gap between the end color band for the tolerance(probably harder to see on those smaller 1/8 watt resistors) and that should be more glossy or some kind of metallic color. Otherwise, you'll have to break out the multimeter to check.
J-Five2 years ago
It’s brilliant, creative and pure genius!!!
caitlinsdad (author)  J-Five2 years ago
Thanks, um High-five!
Cool. I try and memorize what the colors stand for and after a project I forget them again.
caitlinsdad (author)  shizumadrive2 years ago
Sometimes you can't even tell what color the band is even supposed to be.
SHIFT!2 years ago
Love this idea! Plush + electronics= PlushTronics?
caitlinsdad (author)  SHIFT!2 years ago
Of course no one who was there remembers it...tuck rock and roll...plush and kustom guitar amps.