Introduction

I’ve always been fascinated by the fact that we can transmit data for a long distance between two devices.

The thing that is fantastic is that it can be done totally free or charge without the use of a mobile subscription.

These two devices allow to send and receive small messages using LoRa technology:

#ESP32

#RFM95

#Battery

#Antenna

#PCBWay

#pcbway #arduino #arduinoproject #esp32 #rfm95 #lora

Video

How to change config

- In case you need to add other devices, you need to modify the "localAddress" variable and make it unique

- In case you need to address a specific device, you need to modify the "destination" variable and put the value of the device you want to message

- In case you want to message all devices, you need to put the value 255 in the "destination" variable.

- In case you want to add more messages, you need to modify the "messages.h" file and change the NUMBER_OF_STRING with a value equal to the number of messages you want to have as options. Then you need to add the string at the end of the "char arr" array.