BubbleSort vs. HeapSort on BlinkyTape

How to visually show the speed difference between BubbleSort and HeapSort? I used the BlinkyTape and implemented it in Processing (aka Java) with the help from BlinkyTape library. The 60 LEDs where stored in an ArrayList of the class, which contains the position on...

Inside BlinkyTapes Powerbattery

Today the battery of my Blinkytape had a sudden encounter with the floor and the USB connection did not work anymore. The tape itself and the USB cable were not harmed, and the “Power” logo lit up normally. So I took my ifixit tools and start the teardown....

Blinkytape fireworks

This year I used the blinkytape and a paper lamp to build a portable fire works presentation. This is the image which got stored in the tape. And here is the video...

CoderDojo 2013/12

At todays coderdojo in Munich, we introduced “scratch” to teach kids programming. Here is an example of what they accomplished with in an hour of experimenting with scratch: After the programming session we also had some fun with arduinos and digital rgb...