Photography by Jeff Keyzer


image Adding Bluetooth to an old phone.

By Jeff Keyzer

Like it or not, Bluetooth headsets have become a part of our lives. Formerly worn only by stuffy corporate execs and the social elite, these devices have become ubiquitous, thanks to dropping prices and hands-free driving laws. A quick search online shows that a new Bluetooth headset can be purchased for less than $20. This is great news for makers because now we can use them in all sorts of projects!

My wife gave me her old Motorola HS820 Bluetooth ...

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