“LoRa has been very popular in recent years. The wireless communication module using this technology is usually cheap (using free spectrum), small in size, energy efficient and has a long communication distance, and is mainly used for mutual communication between IoT terminals or data exchange with a host. There are many LoRa modules on the market, such as RFM96W, which is equipped with SX1278 (compatible) chip, which is very small. I use it with MakePython ESP32 as a gateway.
Next, I will use two LoRa nodes to send the temperature and humidity data to the gateway, and then upload it to the Internet through the gateway. Here you will learn how to upload remote data of multiple LoRa nodes to the cloud through the gateway.”