Gerald Schwarzbauer is an elcetrical engineer who gained experience in windmill-powered plant and nuclear power plant. In one of his computational lectures in his studies of physics he solved an experimental problem with programming a microcontroller instead of using serial port and Visual Basics of a computer. His interest of C and C++ programming started to grow and different projects in microcontroller programming arised. Some projcts are: Measuring Coriolis force on a turntable and compare it with theoretical results. Pickin up useful data of old-timer cars and use it for motor adjustment. In times of Corona measuring CO2 level of class rooms and signaling fresh air supply at critical level. At the moment Gerald tries to make the live of bicycle riders saver at night by Reflectors which light up in different color patterns dependent on velocity and acceleration of the wheel.