Is there an audio out jack? Or would it be easy enough to make one from an old cable and connect it somehow to this for audio out?

There is an included speaker but no included audio out jack. However, some of our customers have connected their theremin to an external amp or synthesizer. You can cut up an old cable or buy on audio plug to bare wire cable. Then, you could connect the negative (black) wire to ground and the other wire to point 16B on the breadboard, the output of the amplifying transistor. This modification isn't officially supported, and you may need to use a preamp or series bypass capacitor to get it working how you want. But it's possible with a bit of tinkering.

How many octaves does it cover? Can the pitch be changed to higher or lower range

It can go from C4 to C6 (Two Octaves), and there's not a built in way to change octave range.

Can it be taken apart and put back together? Would like to use it with more than one class/studebt.

Yes, very easy to take it all apart and repeat the process. Be careful of bending the wires too often because the metal will eventually break. Just be aware and you should be fine.

Can I use a 5v usb cable to power if i add a resistor to the led?

Creator of the circuit here. I wouldn't recommend externally powering this theremin, because the separate power line would add more capacitance to the circuit. External power would be like having another object near the antenna, which would hurt the sensitivity of the system.

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MicroKits Theremin Electronics Kit: Make Your Own Electric Field Instrument | Educational Electronic Music STEAM/STEM Kits for Kids or Grown Ups | No Tools Needed Easy to Build Breadboard Kit

MicroKits Theremin Electronics Kit: Make Your Own Electric Field Instrument | Educational Electronic Music STEAM/STEM Kits for Kids or Grown Ups | No Tools Needed Easy to Build Breadboard Kit

Product ID: 216052151

🎵Create music with electric fields

📘22-page colorful step-by-step guide

🔧No tools or soldering needed

SAR 296

Duties & taxes included

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Description

🎶 Build. Play. Amaze. Own the sound of the future today!

ALL INCLUSIVE KIT - Everything included, even batteries, to start instantly
STEM MEETS CREATIVITY - Hands-on physics and electronics learning for all ages
PLUG PLAY SIMPLICITY - No soldering or tools—just snap parts into the breadboard
WAVE YOUR WAY TO SOUND - Innovative electric field instrument you build yourself
FROM CURIOUS KID TO INVENTOR - Perfect for beginners, hobbyists, and lifelong learners

The MicroKits Theremin Electronics Kit is an easy-to-build, no-tools-required breadboard kit that lets users create a unique electric field musical instrument. Designed for STEM education, it includes a detailed 22-page guide and all necessary components, making it ideal for kids and adults eager to explore physics, electronics, and music innovation.

Specifications

ASIN	B08BJGSYSN
Age Range Description	Kid
Best Sellers Rank	#88,937 in Toys & Games ( See Top 100 in Toys & Games ) #889 in Educational Science Kits
Brand Name	MicroKits
Customer Reviews	4.5 4.5 out of 5 stars (820)
Educational Objective	STEM
Item Dimensions	4.75 x 5.75 x 1.3 inches
Item Weight	7 ounces
Manufacturer	MicroKits
Manufacturer Maximum Age (MONTHS)	120
Manufacturer Minimum Age (MONTHS)	120
Manufacturer Part Number	TM2
Model Number	TM2
Number of Packs	1
Set Name	Theremin Electronics Kit
Size	5.75 x 4.75 x 1.3 inches
Theme	Physics
UPC	091128829000
Unit Count	1 Count

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