Hardware hacks

I bought USB Virtual 7.1 Channel External Sound Card Adapter to build a cheap PC based digital storage oscilloscope. Sound card based oscilloscope is not new to me, I have used it sometimes. There are many free oscilloscope software that you can use. For example “zeitnitz” is a very fine program! Using an external USB →

For good macro photography you need to have good light. Getting nice light nicely to location near camera lens can be sometimes hard. Some photographers use special Macro Photo Studio. Some macro photographers use two flashes mounted on opposite sides of the lens. Some prefer to use ring lights. After some experimenting I thought that →