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Explore Invisible Frequencies
Learn how to solder your own detector, then wear it out into the world.
EMF Explorer Kit





Condition: New
Frequently Bought Together
Sale price $5.99
Sale price $15.95
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The EMF Explorer Badge is an electromagnetic frequency sensing circuit that lets you listen to the world of hidden electromagnetic frequencies around you.
So much can be discovered through listening. The way that Bluetooth hardware sounds when it’s operating. How cellphones sound when they are transmitting data. What a laptop touchpad sounds like when it detects touch. The electronics world is invisibly emitting sounds around us all the time that we are mostly unaware of.
The completed PCB can also be worn as a badge on a lanyard, used to illuminate yourself at night, and be ready to sniff out hidden EMF signals with the use of headphones. No previous electronics experience is required to appreciate and use this badge, and it’s a great way to learn more about your world by exploring the different properties of our surroundings.
Soldering tools and two AAA batteries are not included.
To build the kit you will need a soldering iron, solder, and wire cutters. You'll also need 2 x AAA batteries and headphones (or something else with a 1/8" / 3.5mm audio plug) to listen to the sounds.
| iFixit Part Number | IF179-114-1 |
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Learn How to Solder
Build it yourself! The printed guide shows what goes where, and the QR code on it links to more assembly resources if you get stuck.

Hear What's Hidden
Plug in headphones and the badge turns the electromagnetic fields around it into sound.

The Board Is the Artwork
A UFO hangs over a field of tents with a laptop-toting alien floating in its beam. Solder the LED in and it lights the beam from behind. There is a lanyard hole at the top for a reason.
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