If you have ever wondered what’s the best method to see a scorpion at night. John Bokma has the answer! An array of UV LEDs lights them up magically. John has put together a page with full instructions on building your own. “Some time after reading “A Powerful New Light Source for Ultraviolet Detection of Scorpions in the Field” I decided to build my own scorpion detection device instead
If you have a spare computer you might want to put it to good use as a monitor and control system. “SerReg is a small home controller intended to turn your personal computer ( PC ) into a process control / data collection system. With the appropriate sensors SerReg can monitor physical variables such as pressure, temperature, light intensity, weight, movement etc, process the information and then use the result
Looks like Chris Rybitski has been hard at work… Have a look at one of his latest creations. “This lamp was commissioned by Amanda Webb. It is made from a brushed aluminum hard drive case and a Pentium 2 processor. There are LED’s strategically placed around the base of the lamp along with 2 LED’s aimed at the processor. There are a total of 9 LED’s. The LED’s are controlled
Mondo Technology has a PIC microcontroller circuit for running your Dremel at slower speeds. “The Dremel drill fitted with a mini drill-chuck on a stand is a great setup for drilling circuit boards. The problem is that it does not do low speeds very well. My unit had a failed internal speed controller, so I just wired around it and connected it to a regulated 24 volt DC supply. This
The new episode of Hak.5 is out. Watch the preview above and click here to watch the full thing. “In this episode Paul takes a look at Q, the open source CPU emulator for Mac. Erin Shahan joins us to talk about RSI, the geeks natural predator. Alli shows off an idiot-proof Nintendo DS mod chip with plenty of hackability (and Doom of course). And Wess brings us a
Reconn’s World has an interesting article with sample code of a stepper motor speed controller. “While the stepper motor could be completely computer-controlled, I’d like to be able to change the speed of the motor by turning a dial. for this i’m using a linear potentiometer from radioshack (10kohm, RadioShack #271-1715.) I’ll read the voltage off of the middle pin — turning the potentiometer will cause this middle-pin voltage to
Thinking about building a CNC machine? Hacked Gadgets forum member, Aaron Bowser has a site loaded with information on how to build one. Not only is there helpful information about his design, there is also a vast number of links to other resources. “The mechanical design of the machine was based on a survey of CNC machine websites and on the availability of used and surplus parts. A y-axis gantry
