The International Space Station is orbiting our planet since 1998. One orbit takes only approximately 92 minutes and the ISS is sometimes visible at the night-sky. To the naked eye it looks like a bright star crossing the night sky in just a few minutes.
In April 2017 I was visiting my uncle in Almeria, Spain. He has a nice telescope and we were wondering, whether it would be possible to recognize the International Space Station’s shape through the telescope. As it turned out it is possible but not easy: The primary difficulty was to keep the rapidly moving ISS within the telescope’s field of view. Additionally, the video output was very shaky, which made comprehensive post-processing necessary. Continue reading Observing the ISS from Earth
The widely used Arduino IDE offers many easy-to-use functions, one of them is void digitalWrite(uint8_t pin, uint8_t val) . It sets one of the microcontroller’s pins to either high or low and serves well in many cases. However, it has a really poor performance, i.e. execution time. This post analyses both, speed and interior of the digitalWrite function, and proposes alternative, high performance solutions for setting output pins. Continue reading Port Manipulation and Arduino’s digitalWrite Performance
Today, 14. Dec 2016, I got the chance to try the new Microsoft HoloLens. This article explains briefly what that is and which impression I got.
The Microsoft HoloLens is a pair of augmented reality goggles. Opposed to virtual reality headsets you can still see your surroundings when wearing the HoloLens. What’s exciting about it? A transparent screen inside the headset adds 3D elements to you view. Pretty much as shown in Microsoft’s commercials. Continue reading Microsoft HoloLens: First Impression
This post explains the technical background of the security camera system, shown in the following movie. The post will answer the questions: How to detect a thief, how to take a photo, how to get notifications on your phone, and whether the system would work in reality. Continue reading Smart Home Security Camera