This thesis deals with car remote keyless systems, analysis of these systems and most common attacks on these systems. It also deals with design and realisation of secure car remote keyless system, which should be resistant to said attacks, and with design and realisation of attack against existing car remote keyless system.

The thesis deals with the design and implementation of smart house lighting. In the living parts of the house, the light intensity is maintained at a constant level which is set by the user. The intensity of lighting can be set manually for each room from a central module with a user interface. It can also be changed by any remote control directly in the room in which the user is currently located. When the remote control is used, the information about the change of light intensity is transmitted to the central module. For communication between the central module and the luminaires, the existing power lines are used.

The subject of this thesis is design and construction of a periodic signal generator prototype. The generator will use Atmel XMEGA128A4U microcontroller with computer control managed via USB interface. The thesis contains general solutions to the problem of generating signals with a special focus on utilization of DA converter – digital synthesis and reconstruction of the signal from DA converter output to continuous signal. The thesis further deals with implementation of the USB layer using two libraries (LUFA library on microcontroller side and LubUsbDotNet library on computer side). The final solution will include DC step-up converter for signal peak amplitude assessment and summing amplifier for adding the DC voltage to the output signal. The application will allow for generating signals of various shapes including user-defined ones. These signals will be displayed in the actual application window. There, users will be allowed to create user-defined signal in easy-to-use GUI or load it directly from a file.

The diploma thesis is dealing with the proposal and realization of the sensor and drive system of the four wheel mobile robot. The control unit is a miniature computer Raspberry Pi. The robot will be employed in the future for the environment mapping and location. For this purpose robot exploits the different types of sensors. The information of these sensors is being processed by the Xmega microcontroller. Another microcontroller together with H-bridge DRV-8432 is used to control the direct current drives.

This masters thesis addresses the racionalization of the concept of photovoltaic power station connection. A way of compensation valuable components involvement standar- tizovaným inverter controlled by a microcontroller. Also includes the measurement of voltage and current using a microcontroller. The output voltage of the DC/DC con- verter is controlled by the variable duty cycle of the PWM signal generated by the microcontroller ATmega32.