[Seth King] sent in his latest hack where he used an Arduino to regulate various aspects of a greenhouse. He has sensors for soil and air temperature as well as light and moisture. He built a custom circuit that uses relays to power fans, lights, and heaters. Using timers and the sensor data, the devices can be triggered to create the perfect environment for sprouts. He hopes to make the whole thing wireless by integrating XBees, but for now he ran a USB cord to his computer.

Related: Automatic grow light

TechRepublic and iFixit partnered to teardown Dell’s flagship notebook, the Adamo. The Adamo is positioned to compete directly with Apple’s MacBook Air. The Dell crams a lot of technology into a very thin frame and they use a clever locking system for the backplate to hide any screws. The built in battery has a longer life than the Air and an SSD comes stock. The team points out that the Windows logo is etched on the backside instead of the standard ugly stickers; apparently this took quite a bit of teeth-pulling to get approved. Check out the full photo gallery which includes the fetish packaging and comparison shots to the Air and Dell Mini 9.

AppleDifferent decided to run some benchmarks on their MSI Wind hackintosh to see how it stacked up to real Apple hardware. It comes in under the MacBook Air in most cases and they conclude that it performs about as well as a four year old G4. Being so small and inexpensive, you can’t really expect much better. As a counterpoint, Obsessable posted a video demoing just how slow a first generation Eee PC can be (embedded below). Boing Boing Gadgets is maintaining an OSX netbook compatibility chart. It shows that the MSI Wind is probably the best case for OSX usability. If we were buying today, we’d probably pick up a Dell Mini 9 even though it requires an SSD upgrade before it will sleep properly.

Are any of you running OSX as the primary OS on your netbooks? What has your experience been?

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While not very technical, [3eff_Jeff] posted an interesting modification to an empty air canister that makes it refillable. He was tired of drilling holes in the ozone, so he carefully drilled a hole into the top of the can instead. In the name of caution, he made sure the can was completely empty first by tying the trigger down with a rubber band. After waiting a while he carefully drilled the hole using an oil lubricant, and then epoxied in a Schrader valve from a leftover bike tire tube.

Due to compression of the air as it is pumped into the can, it becomes quite warm. He found that if the can is allowed to cool to room temperature, the air would become very cold once leaving the canister, which would cause condensation problems. So he uses it right after filling, and then empties it out when not in use.

We do not recommend anyone trying this, but it is a unique way to make a commonly used disposable resource in the computer field reusable. If we can use something more than once, we’re definitely for it. That’s why we support recycling components that would otherwise make their way to the landfill.

Lifehacker has listed the top 10 apps that make installing AIR worth your time and effort. Among them are social networking widgets, RSS readers, and other utilities. As you may know, AIR is a set of cross-platform runtimes that allow developers to create rich internet apps that work on various different operating systems. The runtime environment is just as straightforward to install as any other ( JRE, for example).

Snackr and Twhirl, are both staples here at Hack a Day HQ for tracking news. We’ve also heard good things about Google Analytics Report Suite, which can be really useful for tracking site traffic. Still, we’re inclined to think that our audience could write software that’s at least as creative or useful. If you think you’re up to it, download the Adobe AIR SDK and get crackin’.

A fundamental problem with flash memory has just gone mainstream. A detective successfully recovered data from a refurbished iPhone purchased from Apple. Flash memory controllers write to blocks randomly so using standard secure erase techniques are no guarantee that all of the storage space will be written.

[Rich Mogull] has posted a method that should wipe out almost all remnants of your personal data. You start by restoring the iPhone in iTunes and turning off all the syncing options. Next you create 3 playlists large enough to consume all of the phone’s storage space. Sync each playlist in turn and your residual personal data should be obliterated. All that’s left to do is sit back and wonder when the first article about the MacBook Air SSD being impossible to securely erase will be published…