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Power Line Communication for Home Automation Applications
Hromádka, Michal ; Štohl, Radek (referee) ; Fiedler, Petr (advisor)
This thesis describes the design of a modem for a communication over residential power lines. First part is focused on the history, suitable frequency bands, modulation techniques and mainly on the selection of the optimal modem device. Second section contains the description of the hardware design of the modem itself and clarifies the implementation of the PLC module to be used as a communication interface for a full residential automation solution. Last chapters of this thesis introduce the communication protocol, design of the software for the ATmega32 MCU and present of the final field testing under real conditions.
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LED driver
Hromádka, Michal ; Skula, David (referee) ; Šembera, Jaroslav (advisor)
This thesis describes the design and implementation module for LED lighting. The module is designed to control brightness of four LED circuits. Control is done via IR remote control or from PC via USB interface. The module has a mode of "learning", which allows control from any controller that uses the RC5 or NEC protocol. The thesis also deals with the description of used IR protocols, analysis of selected components and software developed for the ATmega16 microcontroller and PC.
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The shift in NFL's stance towards racial issues since Colin Kaepernick's protest in 2016
Hromádka, Michal ; Kozák, Kryštof (advisor) ; Raška, Francis (referee)
This paper aims to analyze NFL's stance and approach towards racial issues since Colin Kaepernick's protest in 2016. Colin Kaepernick is an African American athlete who started to protest against racial and social injustice by kneeling before NFL games when the national anthem was played. His protests caused many controversies because many people saw his actions as disrespectful towards the military, flag, national anthem and towards the USA. NFL's stance is analyzed through a qualitative content analysis of all NFL statements, which were issued since the beginning of Kaepernick's protest until the end of 2020. The statements are analyzed by use of the critical race theory, which focuses on the topic of race, white supremacy and institutionalized and hidden racism. The results of the analysis are that NFL's stance towards racial issues changed substantially. In 2016 and 2017, the primary concern of the NFL was the form of Kaepernick's protest as it was understood as a disrespectful and un-American act. In these years, NFL was trying to have a discussion with players about the causes of the protests, however, its primary concern was the form of Kaepernick's protest. In 2018, NFL briefly introduced a set of rules, which prohibited players from taking a knee during the national anthem while being on...
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Comparing commemorations of semicentennial and centennial anniversary of Easter rising
Hromádka, Michal ; Kasáková, Zuzana (advisor) ; Šlosarčík, Ivo (referee)
The aim of this work is to compare the two most important commemorations (semicentennial and centennial) organized to commemorate the Easter Rising. The first chapter introduces the concept of collective memory as well as some interpretations of this concept by various authors. The concept of collective memory and memory of space is crucial for this work, because commemorations are analyzed using these two concepts. This chapter also introduces research criteria that are later used to compare commemorations. These categories include the identity of the organizers, the geopolitical situation of the Republic of Ireland prior to commemoration, and the building of memorials and memory sites in connection with the Easter Rising. The following two chapters analyze specific commemorations and compare similarities and differences according to predetermined research criteria. Although there are some similarities between the two commemorations and there are many, these commemorations are totally different from each other, especially because of the consequences. The 1966 commemoration was very controversial, especially because of the speech given by President de Valera on the last day of the official ceremonies. The 2016 commemorations were generally accepted as peaceful, respectful and meaningful, even...
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LED driver
Hromádka, Michal ; Skula, David (referee) ; Šembera, Jaroslav (advisor)
This thesis describes the design and implementation module for LED lighting. The module is designed to control brightness of four LED circuits. Control is done via IR remote control or from PC via USB interface. The module has a mode of "learning", which allows control from any controller that uses the RC5 or NEC protocol. The thesis also deals with the description of used IR protocols, analysis of selected components and software developed for the ATmega16 microcontroller and PC.
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Power Line Communication for Home Automation Applications
Hromádka, Michal ; Štohl, Radek (referee) ; Fiedler, Petr (advisor)
This thesis describes the design of a modem for a communication over residential power lines. First part is focused on the history, suitable frequency bands, modulation techniques and mainly on the selection of the optimal modem device. Second section contains the description of the hardware design of the modem itself and clarifies the implementation of the PLC module to be used as a communication interface for a full residential automation solution. Last chapters of this thesis introduce the communication protocol, design of the software for the ATmega32 MCU and present of the final field testing under real conditions.
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