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I began making the cooler for the Acrylic Glass Folding Heater project
Written by PCB Heaven RSS Feed   
Monday, 08 November 2010 00:00

image Lets be scientist for a while! I ran an experiment to calculate the energy that the water gets over time, and from this to calculate the power of the water cooler that i need to have in order to keep the water cool. The method and the results are extremely interesting, but also extremely disappointing... I need to increase efficiency dramatically otherwise my Heating Folder will require more energy to operate than a power drill...

I know that the water will get hot. I know that i have to have a means of cooling to avoid overheat. What i don't know, is how powerful this cooler must be. There are 2 ways: The first one is to get some peltiers and run some tests... But i prefer the second one which is more scientific. I can run a test without a cooler and calculate the amount of energy that the water got, and thus calculate the power of the cooler. So, hands on workbench:

Acrylic Glass Folding HeaterAuthor: Giorgos Lazaridis

Read more: http://pcbheaven.com/projectpages/Acrylic_Glass_Folding_Heater/?p=4

Last Updated on Sunday, 07 November 2010 20:51
 
Universal Robot Gripper From Balloon and Coffee
Written by Carlos   
Monday, 08 November 2010 00:00

iRobot and the University of Chicago released a video of their universal robotic gripper. This gripper that can conform to the shape of seemingly any object. Once it conforms to an object it uses vacuum to become rigid and grip it. This exploits the property of granular materials such as coffee to become rigid or fluid by applying pressure constraints. Basically, the flexible blue sphere is filled with a granular material (ground coffee) and can become solid when a vacuum is applied.

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This is remarkably simple technology, so expect DIYers to reproduce it in no time.

Via Singularity Hub.

Last Updated on Sunday, 07 November 2010 20:56
 
Zigbee Controlled Autonomous Car
Written by Administrator   
Sunday, 07 November 2010 13:26

 
Tiny USB business card
Written by Ian   
Sunday, 07 November 2010 00:00

A cool USB business card. This one is a little different than some of the mass storage device business cards we’ve covered before. It enumerates as a keyboard and dumps contact info into notepad.

Via Hack a Day.

Last Updated on Sunday, 07 November 2010 21:06
 
How to wire a snap disk controller for a solar air heater
Written by Electronics How-To Videos & Articles « Wonder How To   
Sunday, 07 November 2010 00:00



Heating costs can be extreme in the winter, but a solar air heater could help keep the costs down. This video will show you how to wire a snap disk controller in a safe manner, to be used in a solar air heater or any other application. If you're not familiar with electronics and circuits, it may be hard to follow, but well worth trying!

For an example of a bimetal snap disc thermal sensor control ...more

Read more: http://www.wonderhowto.com/how-to-wire-snap-disk-controller-for-solar-air-heater-408902/

Last Updated on Thursday, 11 August 2011 05:32
 
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