[youtube=http://www.youtube.com/watch?v=Jznl8U9zzKM]
Need to monitor not only if a fan is running, but if it is running fast enough? Check out this PC fan failure alarm circuit. After several failed attempts using various circuits, they settled on a Schmitt trigger. They even show a couple variations including a manual reset and a relay instead of a buzzer.
[via HackedGadgets]
[youtube=http://www.youtube.com/watch?v=oyL9R4-h5cQ&w=470]
When doing those cool liquid droplet splash pictures, you need to time not only the camera, but the droplets themselves. This project takes you through how to build the system to time the droplets and work with camera axe to get the right pictures. PCB files and schematics are available. As you can see, the results are quite nice.
The JooJoo exists. With all of the recent media coverage of the iPad, we’ve had a chance to hear some interesting discussion and heated debates. Usually the more tech savy and the hackers are most upset about the “closedness” of the hardware and software. We have heard of many alternatives, but usually they’ve been pretty clunky. The JooJoo(originally “crunch pad”) by Fusion Garage gets mentioned, but we’ve been avoiding it since the company had been having so many set backs, we doubted it would actually exist. Well, it does. The shipped the first ones at the same time as the iPad.
What is so special about it? well, heres what you’ll find when you open it up (yeah, with screws).
With 4 Gb of storage, bluetooth, wifi, a camera, external USB ports, a screen boasting 1366×768 resolution, and a slick interface which supports flash, we can’t help but get excited. It costs $499. We think this could be a fantastic hacking platform. We aren’t going to just run out and buy one yet, but if it takes off, we expect to see people hacking these like crazy. Too bad they couldn’t have gotten a little more press to compete with the iPad.
[youtube=http://www.youtube.com/watch?v=yHmhdiQ8Xko]
[kernelcode] has built this pretty slick looking sequencer/groovebox and shared the process with the world. At its heart you’ll find an AVR atmega168 along with a hand full of buttons and blue LEDs. He says the total cost was somewhere around £15-20, so that’s somewhere under $40 for the American readers. There are tons of great pics of the build and it looks like he’ll be uploading source code soon as well.
[via hackerfoundry.com]
When the Department of Natural Resources of Australia decided that they needed to capture data about the natural flooding of a cave, they turned to a hacker to get results. The goal was to photograph the area during these floods with an automated system. In the end, they used a gutted Lumix digital camera mounted in a trash can, covered in aluminium foil. Though it sounds a bit silly, the final product turned out quite nice. You can see the build log, schematics, and results on the project page.
[via hackedgadgets]
the folks over at OpenSchemes are at it again. This time they’ve cracked open a low end ZerPlus logic analyzer and modified it to function the same as the higher end model. The 16 channel version they purchased appeared to be fully capable of handling the 32 channels of the more expensive model. The installation of the additional components looks like it might be somewhat difficult, but it is certainly cheap.We love seeing things upgraded for cheap. You might recognize OpenSchemes from when they upgraded the DMM tweezers or hacked the USB serial adapters.
[via HackedGadgets]
[youtube=http://www.youtube.com/watch?v=nHiYCZkAq5o]
A Nixie tachometer is new to us. We’ve seen tons of various displays, but not a tachometer. After having extensive annoyances with the factory ignition timing system in his totally awesome Holden Gemini, [Brett] installed a MegaJolt electronic ignition system. To top things off and add that extra bit of flair, he built a nixie tachometer to sit on his dash. Not only does it have the numeric read out, you can see a nixie “bar graph” on top as well. Skip to about 2:30 if you want to go right to the action. You can download the Arduino code from the forum post.
