Attiny EMF Detector

As is tradition, finished product image first.
Inspired from masteruan’s similar build, which I will link below, I set off to build my own micro sized Electro-Magnetic Field Detector. The goals were to make this as small as possible while retaining enough stability that it would not break in someone’s pocket. The challenge to that was the antenna. As you can see from my finished picture, I decided to use the protoboard to help the antenna keep its shape, which I believe it does marvelously.”

Link