DOSbox On Zipit

August 10, 2009 by Caleb Kraft 19 Comments

poolrad (Custom)

Who out there has a Zipit? Great, now out of the five of you, who really wants to run Dos on it? Well, for the one or two of you left reading, now you can. The directions can be found here. [Hunter] has worked out a way to get DosBox running on his Zipit. At 315 mhz his old DOS games, like AD&D shown above, are running quite snappily. You can download everything you need to get up and running from the site. If DOS isn’t your thing, you may want to check out the Linux how to as well.

[thanks Harold]

Serial Hacking With An ATtiny2313

August 6, 2009 by Steve Watkins 19 Comments

board

[Sprite_tm] automated a portion of serial hacking by sniffing out the baud rate using an ATtiny2313 and FT232 breakout board. The firmware assumes 8 data bits, no parity, and 1 stop bit (8N1). This is pretty much defacto among serial ports so it should work well, though some devices do use different settings. The auto detection routine can sniff rates as low as 110 baud and supports non standard rates. Released under GPLv3, the software is also supplied in hex format. [Sprite_tm] has provided great project in past such as Working with VFDs, Controllable bristlebot, and AVR boost converter. Additional information regarding serial hacking after the break.

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Defcon Status At A Hosting Company

August 3, 2009 by Caleb Kraft 33 Comments

defcon

[Aaron] has been working at iweb hosting for about 5 years. When he started, the number of servers was small enough that managing them was fairly painless and could be done by just manually verifying that everything was operational. As the number of servers grew, this task became more and more difficult. They employed various methods of tracking problems, but found them all lacking in one way or another. They got an idea to build a Defcon status page based on all of the information collected about their server status. The page was built and all rejoiced. As with most projects, they just couldn’t leave it alone. Next, they built an android app to be able to see the defcon status from their phones. As cool as that was, they felt they needed to have yet another way to keep track. They What you see above is the prototype for the office defcon status display. It is extremely simple, using an Arduino (yes, we know, massive overkill) to receive status updates to change the display number. [Aaron] says that right now it is a mess, and you have to shield it from the light with your hands to see it, but it works. What should the next step be? A giant Alpha Numeric LED indicator? A nixie tube?

Diamond Thermal Paste

August 3, 2009 by Gerrit Coetzee 48 Comments

[Jared Bouck] over at InventGeek writes about his experience making his own thermal paste. Diamonds can be up to five times as thermally conductive as silver, the primary ingredient in most popular thermal compounds. He combines 60,000 mesh diamond dust he ordered off eBay with non-conductive silicon grease using a special mixer he constructed to keep down the dust. After some experimentation he achieved a max load temperature of 38 degrees Celsius versus a leading silver paste’s temperature of 57c on the same system.

1wire Attic Cooling

July 31, 2009 by Steve Watkins 28 Comments

blower

[RagingComputer] built this 1-wire attic cooling fan. He’s using an Ubuntu server loaded with OWFS to control everything. The 1-wire temperature sensor is interfaced using USB while a serial x10 module sends out commands to be received by another x10 module near the fan. Back in the day we had covered a linux home automation project. We also covered HVAC hacks such as the smart attic fan and a 1-Wire HVAC monitoring system.

Pet-squirting Waterwall

July 24, 2009 by Zach Banks 8 Comments

waterwall

Sometimes, pets need to be trained to stay away from certain things. Over at sump.org, his cats needed to be kept out of his room. He used their natural fear of water by creating the waterwall, a motion-sensing device that sprays water. The project is incredibly simple and uses very few components. It is based around an IR intrusion detector and a windshield washer pump. Although that worked well enough, he also hooked it up to his computer via the parallel port so that he could take pictures as the cats (or people) are sprayed. Although the project is old, it shows how few components are really needed to achieve this kind of behavior.

Related: Motion detecting cat toy

[thanks todd]

Visual Hardware Identification Guide

July 18, 2009 by Eliot 32 Comments

hardwareguide

Check out this visual hardware guide from deviantART member [Sonic840]. It has everything from memory modules, to bus sockets, to power connectors, to an entire array of CPU sockets that have been used over the years. You’re bound to see something in there you didn’t know existed.

[via Gizmodo]