HeadphoneHat

Winter is finally here in Massachusetts. While digging in the ‘Hats’ plastic tub today, I happened upon a flappy hat from last year. SantaMaker recently brought me some cheap headphones, and a few amplified speakers too (but those are for another project). Tonight turned out to be the time to... Read more »

Treasure Finder

Who hasn’t dreamed about owning their own metal detector and searching for buried treasure, or at least a few dropped coins? In this project, we will build a metal detector based on a dual oscillator circuit. One oscillator is fixed, and the other varies depending upon the proximity of metal... Read more »