Sub-D 25 female connector
Troubleshooting against all odds I
The parallel port mystery Have you ever used or considered using the parallel port of your computer to control your own electronics project? Well, I have, and this was not…
Electric heating in the 21st century?
Elektroheizungen im 21. Jahrhundert? Zumindest wenn man einer Firma Glauben schenkt...
Folder refresh under Windows 7
I am quite satisfied with the installation of Windows 7 on my laptop which I bought in June last year. However, one thing has bothered me almost all the time:…
A new soundcard oscilloscope
A couple of years ago I presented a preamplifier on my homepage which allowed it to use standard oscilloscope probes on the line input of a soundcard. This small circuit…
Solar gold diggers?
For many years now solar garden lanterns have been sold. These small lamps feature a small solar cell, a rechargeable battery, at least one light-emitting diode and some simple control…
Hunting treasure in Uppsala
Since April this year a consortium of the Uppsala municipality, outdoor suppliers and other sponsors are trying to get Swedish people off their couches and out into the woods again.…
Buying cable by the metre...
...or not...? For the second time this year I have encountered a strange way to handle cable-deliveries here in Sweden. I haven't experienced anything like this before, so I don't…