All posts on June, 2008

Are you a chess fanatic and you need to play in the dark for some reason? If yes,check out this project.It designed by a member on Instructables, Tetranitrate writes:
had just picked up a cheap-o glass chess set at my local arcade for the low low price of only 15,000 tickets. The novelty of playing with glass pieces quickly wore off, and I wondered how I could make it better. The thought of illuminating the set seemed very appealing, but there were so many different ways that could be done.
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This is a nice analog clock based on PIC16F84.The meter control by pulse width modulation (PWM). It consists of three analog meters with scales that went from 1-12, 0-59, and 0-59 and indicated hours, minutes, and seconds respectively.[more]

This Opto Isolator board allows you to pass signals between two circuits without having to connect them electrically. They are great for eliminating noise problems, or to connect circuits that have different voltages.[more]

Noise Box is based on the gating properties of the 4066 Quad Switch and is amplified with an LM324 Quad op-amp to produce some truly horrifying noise. “Sound” would be too pretty a word to call the sonic mess this device creates. The project runs off of two sets of 9 volt batteries.[more]

lucid dreaming is a phenomenon whereby a person who is asleep and dreaming realizes that he (or she) is dreaming, and continues to control the dream, acting out fantasies or gaining special powers all within the dream. [more]