You might remember the article where uC Hobby demonstrated how to power projects using a computer power supply. One of the issues was that there was a possibility of causing permanent damage if something accidentally got shorted out. Dave has fixed that designing a simple current limiting circuit. With the circuit installed you can now short out the power tap and know that worst case is a 200mA draw. Have
Our friend from Denmark is back at it! After David purchased a wireless keyboard that didn’t have the range needed what did he do? Return it for a different model? That would be no fun… He instead cracked open the equipment and installed some monster antenas that were salvaged from a dead WiFi router. “The core of the antenna cable was soldered to the start of the internal antenne which
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
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
uC Hobby has a demonstration of a simple way to hook up a small electronic project directly to your PC power supply. WARNING if you do something wrong you can do permanent damage to your computer. Another option is if you have an old computer power supply laying around you could convert it into a lab power supply. “You can hack some parts you probably have lying around into a
This project shows the creation of a large array of UV LEDs. They are used to expose a presensititised blank circuit board. Another common method is to use UV tubes. Alfredo has translated it to English as well as he could (English is not his first language). This is great since for some reason the good old Google translator could not do much with it. Thanks Alfredo! "Why if we
Cory, Zach and Summer created the iTunes Jukebox , it represents a fun way to allow party guests to play their favorite tunes. “Take one of the “cartridges” (an electronically enhanced jewel case), and insert it in an empty slot in the iTunes Jukebox (an electronically enhanced CD tower). The tower is connected to the iTunes software on your computer, and as soon as you insert a jewel case,
