EMF Explorer badge


The EMF Explorer Badge is an electromagnetic frequency sensing circuit that lets you listed 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. The kit requires soldering and runs on two AAA batteries.


Design files available on my GitHub page.

Interested in attending a workshop?  Get in touch to receive future updates: