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 my first project. But this time I ran into trouble… With modern versions of Windows it is not easy to get control over the parallel… Continue reading Troubleshooting against all odds I
Category: Everything
Electric heating in the 21st century?
Elektroheizungen im 21. Jahrhundert? Zumindest wenn man einer Firma Glauben schenkt…
Greedy banks…
Sorry, this entry is only available in Deutsch.
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: Creating a new folder in the standard file save dialog from any application did indeed create a new folder – but the display did not… Continue reading Folder refresh under Windows 7
LEDs for Christmas
Sorry, this entry is only available in Svenska.
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 solved the problem that a soundcard has quite a low impedance on its line inputs which makes it unusable for measuring high-impedance signals. Already at… Continue reading A new soundcard oscilloscope
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 electronics. See also my post on a similar project I recently constructed: Lights for the Energy house (to be translated). A couple of years ago… Continue reading Solar gold diggers?
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. For this purpose in and around towns like Uppsala dozens of aluminum poles with a number and letter code have been placed and corresponding hiking… Continue reading Hunting treasure in Uppsala
Uppsala-Fagersta-Uppsala
Sorry, this entry is only available in Svenska.
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 think it is something typical Swedish like moose or meatballs — probably it is only an indication on how companies treat their customers nowadays. The… Continue reading Buying cable by the metre…