Standard LED driver
Do they know what they do?
As you can read in my earlier posts I have become quite attached to the AVR microcontrollers from Atmel. We also use these microcontrollers in projects with our students at…
2011 Digikey's new catalog
The new Digikey catalog is here!
Today I got the new Digikey catalog delivered at the university. It must be the season, during recent weeks also Elfa (you remember: the company which delivers cable by the…
semi-conducting wire
Troubleshooting against all odds II
The hot wire mystery I like to build my prototype electronic circuits on perf- or stripboard after having tested it on a breadboard. Actually I would have loved to have…
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…