This bachelor thesis deals with design and realization of a datalogger designated for logging data acquired gas boiler controls. The gas boiler controls are under development by Honeywell Brno. The datalogger is implemented on Raspberry Pi hardware platform with voltage converters supplied by Honeywell Brno. Measurement application, which is part of datalogger firmware was developed in C programming language. All data that are measured during datalogger runtime are stored on data storage. The measured data are presented to the user by a web application. The web application and data storage are put into operation on the main server, which is the part of local network in Honeywell Brno. In result of this thesis, data logging system capable of...