Theremin-building

[bugshaw]

Um, it appears that I have forgotten how to read resistor codes. I remember that the colour stripes tell you the resistance (and tolerance), and the colour sequence (black brown red orange yellow green blue violet grey white) but the rest I will have to Google for. Also my eysight is less good than it was as a teenager, and it's hard to see the stripes!

I have made some theremin noises already, but only in my throat as I wailed at the resistors :-)

Comments

[alex-holden.livejournal.com]

You can always cheat and use an ohmmeter to measure them ;)

[bugshaw.livejournal.com]

I have one of those - also a book of colour codes :-)

I might resort to the ohmmeter, it's darned hard to tell the red/orange/yellows apart and the green/blues.

heterodyning oscillators, batman!

[damienw]

Ohmmeter all the way for me, but I'm colour-blind. For theremin building I want an oscilloscope... darn tuning. Which circuit are you using?

Re: heterodyning oscillators, batman!

[bugshaw.livejournal.com]

This circuit:
http://www.siliconchip.com.au/cms/A_103277/article.html

It came in a kit with the parts.

I'm not colour blind, but the different colours have a very similar quality (tone? hue?) so the red and orange and brown and purple look very similar.
I started trying to identify the resistors by writing down the colour codes on a bit of paper. Then I turned the page and found the parts list included colour codes, so I could cross check them. I got around half the colours wrong!! And that's before I try to decode them...

Re: heterodyning oscillators, batman!

[alexmc.livejournal.com]

Is that not the definition of colour blindness? *some* colours are hard to differentiate if they have the same shade?

[alexmc.livejournal.com]

Oooh, I've always wondered abou building a theremin but suspect my skillz are to weak.

[alexmc.livejournal.com]

Spellin skillz