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…
Webmin and apcupsd
As I have reported earlier, I decided to run webmin on my new server. I have also reported about my UPS which keeps my server running whenever Vattenf*ll fails to…
Knight Rider is back
Now I am completely sold to AVR microcontrollers. ATMEL's free software seamlessly interfaces to the also free AVR-GCC C compiler and it is really easy to get started with the…
Bugs with six and more legs
Today was the first really sunny day this spring in Uppsala. Reaching 25°C I spent a large part of the day on my balcony where I was visited by a…
New batteries
Today I finally managed to get the four new batteries for my UPS unit. Now everything is green again: