The Internet of Things (IoT) is disrupting every industry sector. And processing all the captured data can lead to new even more revolutionary opportunities. LoRaWAN communication protocol is a low power and long range technology which allows easier access to IoT solutions. I will explain the basis of Internet of Things, LoRaWAN technology and will present a few real/life usecases. Then, with open-source tools, we'll be able to simulate a device, send an uplink message to a packet-forwarder simulated gateway connected to LORIOT Network Server. I'll end with simulated device/gateway demo.