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. Why – well I have six of… Continue reading LED lamps are (not) forever
Month: 2014-02-26
Optical illusions
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: Look at the full image, look at the red circle, look at the yellow circle… (image found at Mighty Optical Illusions)
AVR ISP breadboard adapter
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 projects also involve AVR microcontrollers which support an in-system programming. For this… Continue reading AVR ISP breadboard adapter
special offer at Bauhaus
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 LED… Continue reading special offer at Bauhaus
Do you need a byte?
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 repeat all the steps from the Instructable here, just let me tell you that it works nicely! The circuit itself is simple: the… Continue reading Do you need a byte?