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Climate Monitoring at Home
Pillár, Andrej ; Dobrovský, Ladislav (oponent) ; Šoustek, Petr (vedoucí práce)
This work is focused on designing, implementing and testing a device which could provide an overview of indoor environmental conditions at a glance. Environmental sensors for temperature, humidity, pressure and CO2 concentration are used for this device. In addition to providing immediate overview on a built in display, the device is able to communicate the measured data via MQTT; an Internet of Things protocol. A server solution for this purpose is also a part of this work. The server stores the data and provides means of accessing it. Data is saved in an SQLite database and accessible via a JSON API built with a Python web micro framework. A web application built on several web technologies provides an overview of both the latest and historic values. This solution can then be hosted on an http server. The reference implementation runs on the NGINX web server which also facilitates secure communication over TLS for all services. The entire solution is implemented with freedom, modularity and extensibility in mind. Libre and Open Source technologies are leveraged wherever possible.
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Design of mechanical keyboard
Pillár, Andrej ; Dobrovský, Ladislav (oponent) ; Šoustek, Petr (vedoucí práce)
This work presents a constuction of a computer keyboard using mechanical key switches. The first part provides a brief overview of computer keyboard history, used technologies, standards and options. Follows an overview of the keyboard designed as part of this work. The implemented keyboard is based on JWK Everglide Oreo Cherry MX style switches mounted on a PVC plate. The keyboard is powered by QMK firmware running on a 32-bit ARM MCU. The keyboard is provided with a custom keymap and is fully programmable. Additional features include a programmable rotary encoder and multi-color key underglow.
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Climate Monitoring at Home
Pillár, Andrej ; Dobrovský, Ladislav (oponent) ; Šoustek, Petr (vedoucí práce)
This work is focused on designing, implementing and testing a device which could provide an overview of indoor environmental conditions at a glance. Environmental sensors for temperature, humidity, pressure and CO2 concentration are used for this device. In addition to providing immediate overview on a built in display, the device is able to communicate the measured data via MQTT; an Internet of Things protocol. A server solution for this purpose is also a part of this work. The server stores the data and provides means of accessing it. Data is saved in an SQLite database and accessible via a JSON API built with a Python web micro framework. A web application built on several web technologies provides an overview of both the latest and historic values. This solution can then be hosted on an http server. The reference implementation runs on the NGINX web server which also facilitates secure communication over TLS for all services. The entire solution is implemented with freedom, modularity and extensibility in mind. Libre and Open Source technologies are leveraged wherever possible.
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