Introduction I have always been fascinated by photographs about lightnings. While it is relatively easily to put a lightning strike in any photograph using image editing techniques 🙂 I still prefer the real thing. Since photography is a hobby of mine, I wanted to be able to photograph lightnings. However, …
Introduction A friend of mine who has been studying journalism asked me to create an internet radio station to complement his web site where he publishes his own and fellow students’ articles. The radio station would be set up in his basement and would provide streaming radio 24/7. From time …
Introduction This is an old school circuit – I made it (with the help of a friend) in 1987, when I first started out in digital electronics. At the time there were no PCs – or at least not for the average person in Hungary. So all the planning was done in …
Introduction This digital clock displays the time in binary format. Binary clock s have become very popular recently, many hobbyists create their own version of it and they are even available commercially. To decode the time you need to be familiar with the binary number system and have to decode …
Introduction Ever since I got my first smartphone, I wanted to make a stand/holder for it because most of its time it spends on my desk. There are plenty of smartphone designs available on the net, but I wanted to reuse some pieces of hardware I already had and also …
Introduction During the development of embedded projects debugging sometimes can get difficult. There are a number of ways to help troubleshoot problems – a scope or a logic analyzer go a long way narrowing down the problem (although a bit expensive for the hobbyist), a serial connection is extremely useful …
Introduction “A good technician has 3 hands – it is the fourth one that’s missing sometimes.” I think the famous proverb sums it up: Many times there are many, possibly tiny, parts that need to be balanced in an awkward position with one hand, while using a screwdriver/pliers/tweezers/soldering iron with …
Introduction Some time ago I came across a website where I saw a novel way of showing the disk activity of a computer. I liked the idea very much and decided to make one on my own. Since the working of the circuit is explained in detail and very well …
Introduction This project involves creating a bench supply from an old ATX power supply. The resulting bench power supply provides +5V DC, +12V DC, and, optionally, a variable voltage ( +1.25V .. +10.3V DC) power source for the hobbyist. Probably a good beginner’s project, since this project is, although a …
