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....

[Howto] Arduino Micro + Aldi LED strip based on TMI1829

So you got an Arduino Micro and an Aldi LED strip for christmas and want to know how to get started with it. Here is a little project for you. At the end you will see the strand test. You will need the LED strip, a breadboard, some wires, a soldering iron, a sharp...

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...