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Library for graphic objects for microcontrollers Atmel AVR and graphic displays
Skopal, Miroslav ; Frýza, Tomáš (referee) ; Fedra, Zbyněk (advisor)
This bachelor’s thesis is concerned about the graphic LCD display control by the Atmel´s AVR microprocessors. Toshiba T6963 controller is described in detail. The overall result of my bachelor’s thesis is the modular library written in C language (GCC). It provides a set of functions for simple graphic objects and controls drawing. The library is designed as a multi - layered one. It supports the usage of different LCD display controllers without any extensive program code modification.
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Wireless Timer for Fire Sport Competitions
Holinka, Milan ; Šimek, Václav (referee) ; Bartoš, Pavel (advisor)
This thesis describes the design, development and realization of a wireless electronic timer for use in firesport. Specification of the final product is built with regard to versatility, ease of use and low acquisition costs. Commercial products have been compared as inspiration for this work. Requirements of the timer are based on the rules of firesport disciplines, where the timer can be used. It consists of a base station that can be accompanied for additional elements used to starting, splits capturing and stopping. An independent communication module has been created to ensure wireless connection. Libraries for comfort work with the module, support for USB bus and reliable protocol for wireless transmission have been implemented.
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Adjustable source supplied and controlled via USB
Pavlíček, Petr ; Daněček, Vít (referee) ; Zeman, Václav (advisor)
Master’s thesis deals with design and realization of power supply, which is supplied and controlled via USB bus. In theoretical part there are described principles of USB communication drivers which ensures this communication, there are described principles of linear voltage regulators and basic types of DC/DC converters. Mentioned is also PID regulator theory. Practical part aims for design of suitable DC/DC converter topology and creating algorithms for driving this converter. Next there is created PC program which drives power supply and there are also accomplished basic power supply measurements. The result of this thesis is functional power supply supplemented with PCB.
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VGA image generation with microcontroller
Polášek, Jan ; Šebesta, Jiří (referee) ; Fedra, Zbyněk (advisor)
This bachelor’s thesis is concerned with generating image in VGA format using microcontroller. It’s aimed at microcontrollers series AVR from producer Atmel. Project contains VGA interface description, solves its connection to microcontroller’s output ports, further it contains connection diagram of image generation device with microcontroller Atmel ATmega324P, that I constructed during work on this project.. In project are analyzed fundamentals of image generating in microcontroller, synchronization of image using microcontroller’s internal counter, creating of simple graphic images and text and principles of generating colour images. Generation of text is analyzed in details, including source code for microcontroller. The result of this bachelor‘s thesis is functional image generator device.
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Camera slider control
Rajnoch, David ; Götthans, Tomáš (referee) ; Mego, Roman (advisor)
This bachelor thesis describes design and implementation of stepper motor digital controller that manages camera slide movement. The main elements are microcontroller ATmega16 and stepper motor driver TOSHIBA TB6560. Controller allows a time-lapse mode and continuous linear movement including smooth start and stop. Human interaction is based on joystick input and text display connected via HD44780 interface. The theoretical part describes stepper motors and their control modes. The practical part deals with design of electronic circuit and test of functionality.
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Switched power source 300 V/100 V
Horníček, Evžen ; Lutera, Ondřej (referee) ; Pavelka, Ondřej (advisor)
This thesis deals with design of switching power supply used for supplying of electronical measurement instruments. The project consists of choosing of suitable type of the converter, system design of the converter, design of the pulse transformer and the output coil. For final control of design was designed the convertor with universal control circuit and there were measured its basic parameters. Then, the universal control circuit was replaced by microcontroller.
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Remote maintenance of the microcontroller systems
Vágner, Martin ; Hynčica, Ondřej (referee) ; Kučera, Pavel (advisor)
This thesis deals with methods of remote maintenance of microcontroller systems based on Atmel AVR family over the Ethernet interface and TCP/IP protocols. To create communication through TCP/IP, an embedded server NE-4100T is used. At the beginning, key features of the server and methods of handling with content of a program memory are discussed. The final solution is based on the bootloader method. It includes bootloader firmware and user program for PC. The hardware part covers design of interconnection electronics, DC-DC step down converter, real time clock and printed circuit board. The remote maintenance of program memory has been sucessfully solved, but the embedded server NE-4100T produces a problem with an auhentification without a sufficient solution.
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Design and realization of the DC motor controller for mobile robot
Hrbáček, Jan ; Singule, Vladislav (referee) ; Krejsa, Jiří (advisor)
The goal of the bachelor's thesis is to design a bidirectional electronic speed controller for a brushed DC motor with the power up to 250 W. The background research part introduces various ways of each subsystem's implementation and selects proper technologies to be used to build the controller according to the specification. The description of all important design details, developed firmware functionality as well as design of the prototype and the end product is mentioned in the thesis' part concerning construction. The final controller was successfully tested equipped in the wheeled robot Bender 2. It has been found fully functional and reliable in all operating conditions.
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Monitoring interference in the mains supply
Jirčík, Zdeněk ; Kubánek, David (referee) ; Zeman, Václav (advisor)
This semester thesis describes design of electronic device adapted to monitoring of mains supply. Theoretical parts describes mains supply analysis, communication and management of files to memory. Next part is design electronics blocks and their cooperation. There are description of mains analyzer prototype and it’s parts and functions. Prototype was submitted to test measurement.
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Omnidirectional mobile robot
Štěrba, Ondřej ; Baránek, Radek (referee) ; Zezulka, František (advisor)
This bachelor’s thesis describes controlling of omnidirectional chassis based on omnidirectional (‚swedish“) wheels especially controlling angular velocities for each wheel to achieve desired speed and desired direction. As next describes detecting obstacles by additional sensors.
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