With DEF CON XXI scheduled for August 1-4, 2013 in Las Vegas, NV, the conference crew has posted an online Human Badge Challenge. The challenge consists of a word search puzzle contaning contest names, along with a hidden puzzle element. Download their Contest PDF for contest and entry rules, puzzle hints and links to submit […]
The legendary Forrest M. Mims, III, created the above puzzler for Jameco. If the radio DJ performing a show while perched on the construction boom drops his cellphone, how can be proceed with his radio show if he is prohibited from touching the ground? Visit the Jameco site for more details, hints and the solution […]
Deddies Lab has a puzzle box project based on the an Atmega328, an accelerometer and a servo controlled locking system. The object is to get inside a dice-labeled box by tilting it in the correct sequence thereby entering the secret code. When the correct code has been detected by the accelerometer a servo unlocks the […]
In the above figure, what is the simplest way to light the LED when a ball strikes the bull’s eye? The catch: The game should not use a battery or external source of power. Check the Jameco site for the solution to this electronics puzzle.