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 Two weeks ago I wrote about my experience with special price offers for LED bulbs at Bauhaus. What I didn’t write was that I then just went to the other side of the street – well almost – and bought a 2.2 W E14 LED bulb at Jula. 2.2 W E14 LED […] Continue reading LED lamps are (not) forever  On National Geographic there is right now a science show called Brain Games. Even though a lot of the contents is not new, there was one optical illusion which really fascinated me: Which direction are the black and white balls moving? Look at the full image, look at the red circle, look […] Continue reading Optical illusions  My very own AVR ISP adapter on a breadboard. Breadboards are great! I mean the solderless breadboard type which you can get everywhere now for almost no money. I use them all the time to prototype electronics circuits and have been forcing my students to do the same. Most of my current […] Continue reading AVR ISP breadboard adapter  Today I was at Bauhaus in Uppsala, just browsing, not looking for anything special. Close to the exit there was a table with LED light bulbs which were obviously taken out of the regular assortment and re-labelled with new prices. Usually you would expect a bargain – and since I am somewhat sold to […] Continue reading special offer at Bauhaus  You can get everything on eBay, but I have not found a breakout board to visualize a byte on LEDs. My latest Instructable is on the design of a breakout board to view the state of up to eight bits in a breadboard circuit. I don’t fell I have the time to […] Continue reading Do you need a byte? |
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