cooling

58 Articles

3-digit Frequency Meter

June 19, 2008 by 5 Comments


Flow sensors are useful tools for collecting data on the rate of liquid usage, but they need a device to display the data they collect. This three digit frequency meter was designed by [Turbokeu] to do just that, converting a Swissflow SF800 flow sensor’s square wave signal (similar to fan RPM signals) into an numerical expression of liters per minute on a 3 digit LCD. Fan RPM is

[Turbokeu] provides detailed schematics of different configurations for the frequency meter as well as schematics of the layouts of the two PCBs that are used. Even if you don’t have an immediate use for a frequency meter, his clean and readable schematics are worth a look in their own right. The display is installed on front of a tower case along side a CPU speed display.

[via YourITronics]

Beverage Cooling Contraption Contest

May 28, 2008 by 24 Comments


Let’s face it: no one likes warm beer. In the arid August air of Las Vegas, though, it’s difficult to get anything else. To combat this problem, Deviant has hosted a competition the last three years at Defcon called the Beverage Cooling Contraption Contest, or BCCC. We’re not talking about something as simple as a Coleman cooler or even a peltier cooler: the devices entered in this contest have to be able to take a beer from hot to cool and your glass within minutes.

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