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I2C Bus to RS232 Bus Convertor
Votava, Martin ; Marvan, Aleš (referee) ; Orság, Filip (advisor)
The main goal of this Bachelor's thesis is to create I2C bus to RS232 bus convertor. Using I2C bus the convertor drives 8bit I/O expander. In theoretical part buses I2C and RS232 are described along with PCF8574. There is also mentioned selection appropriate microcontroler and design of comunication protocol. Practical part is dedicated to creating control program for microcontroler, appropriate comunication protocol processing and convertor testing. There are also described some auxiliary products and program testing.
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Ultrasonic distance measurement
Klich, Michal ; Krajsa, Ondřej (referee) ; Lattenberg, Ivo (advisor)
The aim of this bachelor thesis is the design and manufacture of a controlling program of equipment for distance measurement using ultrasonic sensors. It focuses on a detailed description of the whole design from the basic properties of the components to the creation of schemes and PCB design. It subsequently describes in detail the development of controlling software of the equipment. The work briefly describes the most important parts of the code. It summarizes all theoretical and practical knowledge gained during the creation of the whole design, it explains the principles of the functions and works of individual parts and it suggests the best possible options of connection of the whole equipment. It also suggests the best possible variants of the entire circuit. The bachelor thesis also describes the microprocesor AVR ATmega8 from the Atmel Corporaton, which controls the entire device, as well as EEPROM memory chip 24LCXXX, SRF05 ultrasonic sensor and communication with the PC via USB using a microchip FT230XS-R.
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LED stroboscope speed meter
Krampoťák, Štefan ; Uher, Miroslav (referee) ; Beneš, Petr (advisor)
The bachelor´s thesis is dealing with design and realization of contactless rotation sensor based on stroboscope method. As the source of the light should be used power LED. The first part briefly deals with the scanning speed and a more detailed description of the stroboscope method, it´s advantages and disadvantages. The second part of this thesis is about designing and implementation of the measurement device, i.e. designing the block diagrams, electric circuit designing and the execution itself. It analyzes each part of the electric circuit and justifies their selection and design. In the last phase of this bachelor´s thesis is made the measurement of the device and were determinated it´s properties.
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Autonomous mobile robot
Pijáček, Ondřej ; Kopečný, Lukáš (referee) ; Jílek, Tomáš (advisor)
This thesis describes the design and implementation of chassis for autonomous wheeled mobile robot along with a proposal for a suitable control system. To move the robot was necessary to create individual modules for measuring environmental data, its subsequent processing and power management. For the entire robot system capable of rapid interaction, certain tasks are separated and controlled by its own microcontroller. For communication between the modules were chosen and designed SPI bus communication protocol. Thus assembled chassis then communicates over a serial line with higher system from which acquires data indicative of a subsequent procedure. The result is a controlling system communicating between its parts. Part of the design is also defined communications protocol that transmits data on the one hand and also used for fault diagnosis when sending information. Furthermore, there are patterns and specific methods for controlling the individual modules. In conclusion, the thesis described the proposed testing the robot in real conditions, along with the measurement results obtained in the task of autonomous driving.
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SmartFlat peripherials
Chytil, Jiří ; Jirgl, Miroslav (referee) ; Bradáč, Zdeněk (advisor)
The theme of this thesis is the design of peripheral devices of a smart home SmartFlat and the design of communication interface for this system. Designed units are the humidity and temperature measuring unit, the unit of security and the smart socket unit for remote control, power measurement and power control. All units are designed for wired communicaton and also for wireless communication with control unit.
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Wireless temperature measurement prepared food
Pospíšil, Jiří ; Matyáš, Pavel (referee) ; Zuth, Daniel (advisor)
The goals of this bachelor's thesis are temperature measurment, data elaboration and wireless data transfer. Theoretical part introduces basic properties and functions of microcontroller and wireless communication. In practial part of this bachelor's thesis is solved temperature measurment task by construction of holow needle with digital sensor inside. Data elaboration is done by A/D converter in ATmega8 – L microcontroller. Wireless data tranfer was done by Bluetooth technology. For the purposes of immediate temperature control was included seven segment LED display. Part of realisation was to design printed circuit board and prototype assembly.
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RFID chips reader with AVR microcontroller
Vaníček, Aleš ; Daněček, Vít (referee) ; Šilhavý, Pavel (advisor)
This thesis deals with design and practical realization of a simple reader module, RFID chips. In the first part of the thesis focuses on the theory of RFID system, which tries to outline the basic principles of automatic identification of goods or persons using RFID. The second part is focused on the implementation of a device that operates at 13.56 MHz HF band, and supports the standards ISO 14443 and ISO 14443B.
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Implementation of USB/LAN/WIFI interface
Voneš, Jaroslav ; Roubal, Zdeněk (referee) ; Steinbauer, Miloslav (advisor)
This bachelor thesis goes into implementing the most modern communication interfaces USB/LAN/WIFI to control the computer itself and also the incubator via a Web interface. The term describes the overall solution to the management of the incubator for using microcontroller ATmega8 with the possibility of the exchange of communication interfaces. For the USB converter was used the circuit FTDI FT232 BM company, from LANTRONIX Ethernet was used for Converter converter XPORT and eventually to communicate the WIFI was elected circuit ESP 8266
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Digitally controlled power supply
Stupka, Dominik ; Drexler, Petr (referee) ; Szabó, Zoltán (advisor)
This document describes design of the laboratory power supply with digital control. Power control consists from a control section which handles communication between the modules and the power section.Into the power section is integrated switching and linear regulator. The designed power supply contains two such modules. To control are used microcontrollers from Atmel. Source parameters are 2 x 30 V / 0 – 3 A. During the construction we have to emphasis on the accuracy of regulation the output values and the modularity of the solution.
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Timer remote controller for digital camera
Živný, Jaroslav ; Prokeš, Aleš (referee) ; Dvořák, Jiří (advisor)
Goal of this project is teoretical design of device for external start-up Digital camera Nikon D3100, which works in modes: classic shot, timebase start-up, bulb mode, series shot and timelapse mode. Core of this device is microcontroller ATmega8, made by Atmel company. For displaying of information about currently working photographic mode or time sign, is use LCD display 8x2. External trigger is connected to camera by DC-2 connector. In this project describing issues of microcontrollers and LCD display. Further this project including block diagram and functional diagram of this time trigger and there is also described program on external remote kontrol, which is in annex to the photographically documented.
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