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Aaron ALAI’s EMF detector project looked so simple and fun I had to give it a try. After putting it together, I liked it so much that I went and built a more ‘meter-like’ version using an LED bargraph -

EMF_detector_LED_bargraph2.jpg

Arduino code is available here.

As I mention in the vid, I was a bit concerned the wire probe might be affected by the LEDs I mounted nearby — but from what I can tell, it still seems (relatively) accurate. A short walk around my workspace even revealed a few items I’d forgotten were plugged in – helpful! I’m sure there are many ways in which this project could be used/repurposed/modded – I plan on converting the readings to sound when I get the chance. If you make one be sure to submit a pic to the Flickr pool and/or send us a link.

Collin Cunningham

Born, drew a lot, made video, made music on 4-track, then computer, more songwriting, met future wife, went to art school for video major, made websites, toured in a band, worked as web media tech, discovered electronics, taught myself electronics, blogged about DIY electronics, made web videos about electronics and made music for them … and I still do!


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