Here are instructions to do some basic hacks to the theremin kit that you can buy from Make. True, there are already directions to do both of these things in the accompanying magazine, but what sets this how-to apart is that it is in English. If like me you can't read Japanese and unlike me, you couldn't figure out what to do from the pictures alone, this should help.

Basically, what I am doing is adding an audio out jack and also a bigger, sturdier telescoping antenna. This is a great improvement on the original.

Step 1: Go get stuff

You will need:
Gakken Theremin Kit (from Make)
A power drill
A mini screwdriver set
A mono jack with switch
Something with a telescoping antenna
A solder setup
Some extra wire
Assorted hardware
<p>What's the level coming out from the lead? I suppose it's speaker level and perhaps it is too high to plug it into a guitar effect pedal? Thanks! </p>
<p>I don't know. A roommate broke it years ago. It is long gone. <br><br>You can add a potentiometer before the output jack as a volume knob. Connect the middle pin of the pot to the signal connection on the jack. Connect one of the outer pins to ground on the circuit board and the other pin to the audio signal from the circuit board.</p>
<p>Thanks! I've connected it with a guitar amp, and the level is too high even if I turn the input knob all the way down. I'll try to add two resisters as voltage divider. </p>
what kind of headphones are they? i really like them :P some retro stuff :D great instructable!
<a href="https://www.instructables.com/id/Jackhammer-Headphones/">https://www.instructables.com/id/Jackhammer-Headphones/</a><br/>
yeah, but i really like the sound cancelling headphones you used, where did you buy the sound canceling headphones ( without the speakers inside) wich store? or the web? thanks
i was gonna ask that exact question. :D
If you find the audio-amplifier circiut (should be a simple op-amp) you might be able to tap into the signal and get line-out voltages from this.
It's just a 386. I considered doing that, but decided to just go along with illustration in the accompanying magazine and see how that goes.
Always good to follow the instructions first, and then do your own after. Give you a better idea on what's going on.
Is it possible to make a long range thermin?
a pox on digital theremins! it's not a real theremin (though...that's obvious with this one)...the sound is never as good as an analog one<br/><br/>theremaniacs make a nice analog single antenna model that's pretty cheap (relatively)...i got one of these kits for my dad and made my own case/mount/whatever for it out of a cigar box and a little bust of chairman mao...sounds great! <a rel="nofollow" href="http://www.theremaniacs.com/">http://www.theremaniacs.com/</a><br/>
very cool!
Nice one, very detailed. One thing might be important, the output signal from the jack is very strong, its a good idea to use headphones with volume control like i see in the picture above. I can use Ipod speakers on it without turning them on. I didn't dare to hook it up to an amp, i think it might blow it. I'll build a mixer first.
Nice! I think you did a great job modifying it. I have always wanted a theremin. Goes to waste money on one..

About This Instructable




Bio: My name is Randy and I founded the Instructables Design Studio. I'm also the author of the books 'Simple Bots,' and '62 Projects to ... More »
More by randofo:DIY Life-Sized Cardboard Cutout Secret Drawer Lock DIY Guitar Pedal 
Add instructable to: