[ANGLÈS] The aim of this master thesis is to build a low cost wireless sensor network with a Raspberry Pi. At the day of today the presence of internet in quotidian elements has continually grown over the time. These sensing elements require an interconnection between them to transmit raw data to be processed, also requires some specific goals like low-cost, low consumption and low resources in a wireless transmission to ensure that the technology can be used in common elements like temperature, movement, humidity, speed sensors, measures, surveillance, etc. The present document provide a guide to implement and develop a coordinator of this wireless network solving some problems that current IPV4 networks have and providing a new scenario where a sensor network can be built to in a low-cost infrastructure. To achieve that end, several steps are realized. First, technologies are studied, compared and selected with specific criteria. Second, a solution is developed, built and tested and finally some conclusions are taken.