LoRa Wireless Sensor Network

Projects General Guidance
1

Hello!
Currently I am working on a project, in which I want to realize a wireless sensor network.

Basically a Basestation gets Data from many Sensors. The Basestation should be able to display the Data. I decided to take a LoRa Modul, because of the long distance between the Basestation and the Sensors (over 1 km).
After some research i have found this Development Kit with the newest LoRa Chip from Semtech:

The Basestation and the EndNodes should be realized with this Development Kit. The End Node has additionally a sensor. With this Kits and the examples it should be easy to send some Data. But I want to make a Wireless Sensor Network with Adresses, Protection and Meshing. To get a secure Network i don't want to make a own protocol. Can somebody help me or give me some Ideas, how to create such a Network?

Does anybody know a open-source Solution for this Problem?

2

You can use an Esp32 / Esp8266 / Arduino boards with WiFi and Arduino Cloud

3

Or nrf24l01 which has a 1100 meters range with the antena or 240 meters whithout the antena

4

This mesh network code works OK, but it uses Strings, which will cause it to crash:

The "String free" code is here: GitHub - jremington/UART_based-RF-Mesh-Network: Arduino serial UART RF mesh network with time stamps, code updated

5

And if you use the receiver and the transmitter with the antena it should be 2km

6

Thank your for helping!
I will have a closer look on this.