April 15, 2012

Name the Thing Contest – 202
Contests

3

    The prize this week is a non contact AC test pen. This pen can be used to test if AC voltage is present in a wire without needing to touch the bare conductor. This contest will run for one week (April 15 – 20, 2012). Ending time is based on central standard time. To enter, identify the item above and what it can be used for. Please do

Invisible Infrared LED Geocache Box
Cool Gadgets

1

  Geocaching is getting very popular. AJ and Brian sent in this cool Geocache Box they built with Invisible Infrared LED inside. This box has a secret number that can only be seen with a bit of ingenuity, in this case since the numbers are shown with IR LEDs the numbers are not visible to the naked eye. But if you look at it through the viewfinder of camcorder or