USB Hourglass for geeks
Forget about the way a traditional sand timer works in an hourglass – that USB Hourglass merges your everyday sand timer with a rotating mechanism and an optical beam that goes through the center of the timer in order to observe the falling sand. A detector on the other side will analyze the amount of light that reaches it, helping determine when is the exact moment
to rotate the hourglass. All juice is made available by the USB cable, so produce certain it remains plugged in somewhere at all times.Permalink: USB Hourglass for geeks from Ubergizmo | Hot: Nokia Booklet 3G Review
Orginal post by Mike