Within this thesis we have developed a dedicated applications, one for the mobile device and other for Bluetooth module. The applications enable sending and receiving simple text messages between mobile device and computer. In today's world of electronics is a lot of sensors and actuators that perform a variety measurements and communicate with some higher unit, such as a server. The device usually periodically performs measurements and sends them to server where this data is processed, analyzed and stored. The main drawback of these devices is autonomy of their batteries. On the market we can find many solutions which partially solve this problem and enable connectivity to devices in longer time period with low energy consumption. One of such technologies is the wireless technology Bluetooth Low Energy. In our thesis we have developed a simple mobile app for Android platform and simple app low energy consumption module Bluetooth BLE112. The aim of both applications is to establish communication between devices, therefore, sending and receiving plain text messages. To facilitate the realization module is connected to the computer, where we write and receive messages from mobile device and vice versa. The thesis consists of two parts. The first part is a theoretical, the second one is practically designed. Within the theoretical part, we present Bluetooth technology and used electronic items and tools for application development on Android and module. As part of the practical work, we have developed an application for smart mobile device and application interface BLE112. The interface has also been properly setted up and connected via electronic elements with computer. In conclusion, we have passed the test and evaluate the result achieved.
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