Arduino LoRa Network, Master Arduino LoRa to Multiple Arduino Lora Nodes, LoRa End Nodes, RA02 Lora

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My Previous videos on LoRa:

Arduino Lora SX1278 Getting Started Tutorial:
   • Lora SX1278/76/77/79 Arduino Hello Wo...  

Arduino Lora SX1278 Two Way communication:
   • Arduino SX1278 Lora based Two Way com...  

Multiple Sensors Monitoring using Arduino and Lora SX1278:
   • Multiple Sensors Monitoring with Ardu...  

LoRaWAN Network:
   • Multiple Lora Nodes Communication wit...  

Arduino LoRa based Home automation Project:
   • Arduino and LoRa based Automation Pro...  

Arduino LoRa GPS Car Tracker
   • Arduino LoRa GPS Tracker for Car, GPS...  

Arduino LoRa Swimming Pool Monitor for kids
   • Arduino LoRa Swimming Pool Monitoring...  

Arduino LoRa and Bluetooth based free text messages
   • Arduino LoRa Free SMS over Long dista...  


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Project Description:
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In today’s episode, you will learn how to make a LoRa Network using Arduino boards, SX1278 LoRa transceiver modules, a Servo, an I2C supported SSD1306 Oled display module, and a pair of Potentiometers.

I have already uploaded a video on the LoRa network, in which I have practically demonstrated that how a LoRaWAN can be implemented by using multiple LoRa transceiver modules. Guys, you might be thinking that when I have already implemented LoRaWAN, then what is the need to work on this project once again? Well, you will get its answer in a minute.

As you know, every person or a company has a specific requirement that for what purpose a LoRa network has to be designed. Similarly, I also had to keep certain personal requirements into consideration when I was designing my LoRaWAN or LoRa network. I wanted, that my designed LoRa network had a Master Node and rest of the LoRa Nodes just act as sensor Nodes.
So, keeping in view this necessity before me, I worked out and designed this LoRaWAN network. I used a total of 3 Nodes in this LoRaWAN network.
To the master Lora Node an i2c supported Oled display module is connected which I used for displaying the data received from the other two LoRa nodes.

To the Lora Node1 a potentiometer is connected which I used as the sensor. You can replace this sensor with any other sensor of your choice.

To the Lora Node2, DS18b20 waterproof one-wire digital temperature sensor is connected.

The master Lora Node, first, sends a request to the Lora Node1, for this I created a timer using the millis() function. So, for the first 5 seconds, the Master node sends multiple requests to the Lora Node1 and receives data from the Node1, this time duration can be changed in the programming. But it’s good to give it enough time so that the master node can get multiple replies from the end device.
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