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Barn Door with Electric Motor
Written by admin   
Monday, 06 June 2011 00:00

Authors: admin

barn motor

Anyone ever rigged up a split sliding barn door to an auto opener of some kind? Like a garage door, but instead the doors slide to the left and right allowing entrance to the garage. A simple Radio Shack with a normally open/momentary close push button then mounted on the other side of ...

Read more: Barn motor

Last Updated on Monday, 06 June 2011 15:20
Geiger Counter USB Hack
Written by admin   
Monday, 06 June 2011 00:00

Authors: admin

This Geiger Counter USB Hack takes an inexpensive Kvarts DRSB-01 Geiger Counter and makes it able to output counts our via USB. This would be very helpful when you want to take readings logged over time. It uses a small microcontroller to interface to the computer. Check out the small circuit implementation above!

Read More: [link]
Last Updated on Monday, 06 June 2011 14:21
The PlayStation 3 Water Cooled Laptop
Written by hacknmod   
Sunday, 05 June 2011 02:41

Authors: hacknmod

Even though Sony is having some pretty serious security issues, this water cooled PS3 laptop is still an extraordinary build.  The entire work log is available if you’re willing to take on the challenge and build one yourself.  The 16.75”x13”x3.5” case is made from aluminum and Keyboards and speakers are built in.

Read more: [VIA]

* It's worth clicking through the whole thread.

Last Updated on Wednesday, 31 August 2011 01:16
Repairing Laptop Battery
Written by Administrator   
Sunday, 05 June 2011 00:00

Laptop batteries can be repaired but such work only makes economical sense for smaller operators.
The success rate varies with battery type.
One must remember that the ‘smart’ battery consists of two parts, the chemical cells and the digital circuit.
In some cases, the chemical part can be fully restored but the fuel gauge may become
inaccurate or other data may get corrupted.

Anyone attempting to repair SMBus battery must be aware of some non-compliance in the SBS forum.
Unlike other tightly regulated standards, the SMBus protocol allows some variations.
This may cause problems with existing chargers and the SMBus battery should be checked for compatibility before use.
During cell replacement, the circuit of many ‘smart’ batteries must be kept alive with a supply voltage.
Disconnecting the circuit, if only for a fraction of a second, can erase vital data and render the circuit unusable.
To assure continued operation when changing the cells, connect a secondary voltage through a 100 Ohm resistor before disconnecting the cells.
Remove the secondary supply only after the circuit is fed with the needed operating voltage from the new cells.
Build yourself a complete charging, discharging and managing lithium ion pack battery system
with smd components. I do this.
Follow the link for complete instruction manual to build battery control system.     >>>English


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Author: Petar  Avramovski

Source: Magazine

Last Updated on Sunday, 05 June 2011 16:19
The autobar mixes drinks automatically
Written by admin   
Friday, 03 June 2011 00:00

Authors: admin

John Creswell build an automatic bartender using some pumps, a computer, a refrigerator, a power distribution controller and custom software. You select the cocktail from the menu and the machine mixes the liquids to produce it.

The autobar mixes drinks automatically –  [link]

Last Updated on Friday, 03 June 2011 10:43
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