Click to view We’ll admit it: we’ll lack the ambition to perform most of the hacks you read about on Giz. But taping a calculator to an AM radio to make a metal detector? That’s right up our alley.

So, you've binged a few treasure-hunting shows and now you're wondering if your own old detector in the garage can find you a pirate chest. One of the first questions that may pop up in your head ...