…it arrived by mail today – and I couldn’t wait…
The Wanhao Duplicator i3.
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 It’s been a while since I exposed my students to counterfeit chips from dubious eBay channels, but now it has happened again. Texas Instruments SN754410 dual H-bridge For a couple of projects I provided my students with dual H-bridge drivers, the Texas Instruments SN754410. I had a couple of these in my […] Continue reading Counterfeit chips – again  Today I wanted to use a magnetic sensor for a small project. I had three Honeywell 2SS52M sensors in my stock – a magnetoresistive switch, more sensitive than your usual Hall-effect based ones. For my project it didn’t matter, but since I had these lying around I could as well put them to some […] Continue reading Don’t trust the datasheet! 
Unbelievable, but the migration to my new laptop and from Windows 7 to Windows 10 is easier than anticipated. Among other things this is thanks to the following programs: Popfile database exporter Firefox password exporter TheBat Email with built-in Backup/Restore Old New model HP Probook 4520s ASUS N551ZU purchased 2010-06 2015-11 screen 15.6″ […] Continue reading Merry Christmas & a new laptop  I am still convinced that Firefox is a great browser, but lately something went terribly wrong. The browser would take up 1.7 GByte of virtual memory almost immediately after starting, almost independently on the number of open tabs or visited pages. In order to debug the problem I installed another add-on (after actually reading […] Continue reading Is your Firefox getting tired? I used to book flights to Germany via agencies like Momondo or Seat24, and they certainly used to offer me a good deal. However, today I noticed that both agencies wanted to charge over SEK 500:- (about €50.-) extra for a single piece of check-in luggage on an Air-Berlin flight from Stockholm to Berlin. […] Continue reading When booking a flight…  Blackboards during the last lecture in the course Electronics I.  A couple of years ago I mounted an Atmel STK500, a couple of breadboards and a power supply in a briefcase. This allowed me to bring test circuits to my lectures and demonstrate them in the class room. The briefcase with the STK500 still mounted. Since I now have abandoned the STK500 […] Continue reading A portable electronics bench I just updated to WordPress 4.3.1 and not astonishingly the qTranslate plugin does not work. It is not even developed any further, but I found the new qTranslate-X but that needs obviously some more work… |
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