  This article describes the design of a flexible and low-cost platform for
monitoring environmental variables applied to agriculture. For the construction
of this platform, technologies based on the communication protocol, Wi-Fi,
Bluetooth, and Zigbee were used, using the embedded Raspberry pi 3 b + system
and sensors to quantify different environmental variables, using different open
source hardware and software tools. The network is made up of a central node
(gateway), implemented on Samsung's Artik 1020 card, and two nodes where the
sensors for reading environmental variables are connected. Finally, the data is
collected by the gateway, which will be in charge of processing and storing it
in a database so that the user in the future can access the information in real
time from anywhere.
