A good soldering station and fume extractor is a must for anyone interested in hacking and modding, but not everyone can afford the expensive professional models on the market. This How-To and the tips within it will guide you through the process of building an inexpensive homebrew fume hood complete with built-in time and temperature controlled soldering station and all the soldering tools you need.
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Build A Simple Bat Detector
[Tony Messina] had been fascinated with bat’s echolocation since he was a kid. After he retired, he decided to act on this fascination and built a simple bat detector.
The simple bat detector uses frequency division to lower the bat’s chirping to a frequency we can hear. For example, if a bat is calling at 91kHz the system will divide it by 16 and put out 5.7kHz. The system is digital, so all amplitude is lost. You’ll just hear clicks like a Geiger counter. Being digital has its advantages though. Unlike similar analog devices that have to be tuned to a small frequency range, the simple bat detector can detect a much wider window.
Laser Etching Printed Circuit Boards
While we hope you enjoyed our How-To: Etch a printed circuit board, toner transfer certainly isn’t the only way to get the job done. [Garrett] from macetech has recently been playing around with using an Epilog laser to etch PCBs. He started by applying a thin even coat of flat black spray paint to the copper board. The laser is used to remove paint in areas that you want the copper removed. Once that’s done, you proceed with etching as usual. He eventually removed the paint mask using acetone. The result has very fine, sharp traces, but most people that have tried this agree that using spray paint is less than ideal.
StickDuino, USB Stick Arduino Clone
The Arduino hardware clones keep rolling in. This weeks entry into the modern dev board’s roster is the StickDuino. The board is designed to be fully hardware compatible and plugs directly into your USB port. The StickDuino uses all SMD components. The creators know that this can make assembly more difficult so they’ve space the components out, opted for larger pads, and collected some links to SMD tutorials. The board feature two more analog inputs than the Diecimila and it has a jumper so you can switch it to 3.3V. All around it looks like a great product; frankly we love anything with full board layouts.
Electric Screwdriver Robot Hand
Here’s an interesting grabber hand built for use on an ROV. This grabber is a novel use of a very common and extremely cheap electric screwdriver, that is probably found in everyone’s toolbox. It is also a great way to reuse that small electric screwdriver you have kicking around that uses proprietary batteries that are not worth replacing. Many of the ROV’s covered previously could benefit from such a powerful device built from very common materials off his parts list. Because the screwdriver was extremely cheap the designer chose not to completely seal the housing.
It seems like this simple design that could be used in many robotic projects and by simply changing the jaws could yield other creative uses. The first thing that comes to mind is to upsize this hack into something bigger and stronger. Either way, you might not want to get your fingers in there.
Hacking Animatronic Elvis
[Scott] shot us a tip about some progress on hacking those creepy [Elvis] heads produced by Wowee. The head uses a flash cartridge to store all the data used for the motion/audio control. The cartridge uses NAND flash, so a quick solder job to an XD flash card reader yielded a useful dump of the memory cartridge – which happened to be fat32 formatted. There’s still plenty of work to do, but it seems that it’ll be trivial to replace the data with custom audio and motion commands.
Shell Case Your Flash Drive
[Aki] sent in his collection of projects. We like his bullet shell cased USB flash drive and his take on our friend, the simple parallel port based logic analyzer. The flash drive uses a B style USB connector, mounted inside a big freakin’ bullet shell. The logic analyzer is the classic version, but uses a rather nice unix compatible piece of software that supports up to 1mhz sampling rates.
