Introduction: Arduino Project: Test Range LoRa Module RF1276 for GPS Tracking Solution

Picture of Arduino Project: Test Range LoRa Module RF1276 for GPS Tracking Solution

Connection : USB - Serial

Need : Chrome Browser

Need : 1 X Arduino Mega

Need : 1 X GPS

Need : 1 X SD card

Need : 2 X LoRa Modem RF1276

Function: Arduino Send GPS value to main base - Main base store data in Dataino Server Lora Module: Ultra long range RF1276 from APPCONWIRELESS LoRa is a new, private and spread-spectrum modulation technique which allows sending data at extremely low data-rates to extremely long ranges. The low data-rate (down to few bytes per second) and LoRa modulation lead to very low receiver sensitivity, means in this test means more than 10km.

Step 1: Building Base Station

Picture of Building Base Station

Computer width internet connection and a LoRa modem connected into USB port .

Arduino Car Kit ·

The metric box

Anduino Mega connected to serial 2 to GPS reciver, and Serial 1 to LoRa modem. A SD card is used for store data.

Step 2: ​The First Test

Picture of ​The First Test

· 10.6 Km on a path through urban centers, galleries and along the coast made with loops

The ratio of reception /transmission has been of 321/500
TX point

RX point

Step 3: Create the Interface

Picture of Create the Interface

1 - Set up a new project LoRa

Press icon cog to open project config

Step 4: Add Gauge

Picture of Add Gauge

2) Open the gauge slider.

· 3) Scroll to the GPS.

· 4) Add one to the desk.

Step 5: Drag Gauge GPS and Add OpenStreetMap

Picture of Drag Gauge GPS and Add OpenStreetMap

· 5) Add OpenStreetMap map to desk

Dragging the component GPS on the icon map, OpenStreet map is generated.

Create the Interface

· 6) Change map refresh

Change the map refresh time from 5000 to 10000

Step 6: Drag GPS Gauge and Add Table Log

Picture of Drag GPS Gauge and Add Table Log

· 7) Add a Table Log gauge.

By dragging the gauge above the GPS icon table is created gauge table log

· 8) Change table log refresh. Change the map refresh time from 5000 to 10000

Adjust the position of the gauges

· 9) Drag gauges adjust the position of the gauges by dragging them across the screen.

· 10) Save project

Step 7: Get Code

Picture of Get Code

10) Activate code container

Button on top right button, select all and copy base code.

Step 8: Arduino IDE

Picture of Arduino IDE

· 11) Paste code on Arduino IDE

· 12) Edit code Add this line in the definition

Step 9: Coding Details

Add this line in the definition

//*************************************************************************

//** LIBRARY ** //*************************************************************************

#include <TinyGPS.h> // ++ GPS library

#include<SPI.h> // ++ SPI library #include

// ++ SD library//

*************************************************************************

//** SD ** //*************************************************************************

// * SD card attached to SPI bus as follows:

// ** UNO: MOSI - pin 11, MISO - pin 12, CLK - pin 13, CS - pin 4

// (CS pin can be changed) and pin #10 (SS) must be an output

// ** Mega: MOSI - pin 51, MISO - pin 50, CLK - pin 52, CS - pin 53

// (CS pin can be changed) and pin #52 (SS) must be an output

// ** Leonardo: Connect to hardware SPI via the ICSP header

// Pin 4 used here for consistency with other Arduino examples const int chipSelect = 53;

// ++ SD pin selector

//*************************************************************************

//** GPS ** //*************************************************************************

TinyGPS gps; // ++ GPS on Serial2

void gpsdump(TinyGPS &gps); // ++

bool newdataGPS = false; // ++

Add this line in the setup()

//***********************************************************************

//** GPS serial setup ** //***********************************************************************

Serial2.begin( 9600 ); // ++

delay( 1000 ); // ++

//***********************************************************************

//** SD Initializing ** //***********************************************************************

// make sure that the default chip select pin is set to // ++

// output, even if you don´t use it: // ++

pinMode( SS, OUTPUT ); // ++

Serial.println( F("Initializing SD card...") ); // ++

// see if the card is present and can be initialized: // ++

if (!SD.begin(chipSelect)) { // ++

Serial.println( F("Card failed, or not present") ); // ++

// don´t do anything more: // ++

return; // ++

} else { // ++

Serial.println( F("SD card OK") ); // ++

} // ++

Add this lines in loop() void

serialEvent2(); // ++ call GPS serial event

Add SeriaEvent2 code

//*************************************************************************

//** GPS serialEvent ** //*************************************************************************

void serialEvent2() { // ++

while (Serial2.available()) { // ++

char c = Serial2.read(); // ++

//Serial.print(c); // uncomment to see raw GPS data // ++

if ( gps.encode(c) ) { // ++

newdataGPS = true; // ++

break; // uncomment to print new data immediately! // ++

} // ++

} // ++

} // ++

Add GPS dump voud

//*************************************************************************

//** gps dump ** //*************************************************************************

//** The valid range of latitude in degrees is -90 and +90 . **

//** Longitude is in the range -180 and +180 **

//** specifying the east-west position **

//** "123456789 1234567890" **

//** "000.00000;0000.00000" ** //*************************************************************************

void gpsdump(TinyGPS & gps) // ++

{ // ++

int year; // ++

byte month, day, hour, minute, second, hundredths; // ++

unsigned long age; // ++

gps.f_get_position( &LATGP00, &LONGP00, &age ); // ++

gps.crack_datetime( &year, &month, &day, &hour, // ++

&minute, &second, &hundredths, &age ); // ++

long lat, lon; // ++

gps.get_position(&lat, &lon, &age); // ++

// *********************************************************************

// ** make a string for assembling the data to log: **

// *********************************************************************

String dataString = ""; // ++

dataString += ( lat / 100000 ); // ++

dataString += "."; // ++

dataString += lat - (lat / 100000 ) * 100000; // ++

dataString += ";"; // ++

dataString += ( lon / 100000 ); // ++

dataString += "."; // ++

dataString += lon - (lon / 100000 ) * 100000; // ++

dataString += ";"; // ++

dataString += String( static_cast(day) ); // ++

dataString += "/"; // ++

dataString += String( static_cast(month) ); // ++

dataString += "/"; // ++

dataString += String( year ); // ++

dataString += ";"; // ++

dataString += String( static_cast(hour) ); // ++

dataString += ":"; // ++

dataString += String( static_cast(minute) ); // ++

dataString += ":"; // ++

dataString += String( static_cast(second) ); // ++ //*************************************************************************

//** SAVE TO SD ** //*************************************************************************

// open the file. note that only one file can be open at a time, **

// so you have to close this one before opening another. ** //*************************************************************************

File dataFile = SD.open( "gps00.txt", FILE_WRITE); // ++

// ***********************************************************************

// ** if the file is available, write to it: **

// ***********************************************************************

if ( dataFile ) { // ++

dataFile.println( dataString ); // ++

dataFile.close(); // ++

} else { // ++

Serial.println( F("ERROR SD Write") ); // ++

} // ++

}

If you want to download the code, please visit this page.
http://iot.dataino.it/beta/view/site/lora-arduino-gps.html

Comments

gulliverrr (author)2016-04-03

Congrats! Great project! Could you please point me to the right direction about the tool you used for creating the interface?

Thank you!

diy_bloke (author)2017-01-29

"Press icon cog"
great..... but what icon cog? what software?

diy_bloke (author)2017-01-29

I am impressed

manuka (author)2016-01-12

Bravo ! Perhaps see my 2015 Instructable =>
https://www.instructables.com/id/Introducing-LoRa-/ for LoRa™ setup insights & a PICAXE based approach. Stan.

Jasonw3 (author)manuka2016-01-13

I see. Do you test the module RF1276? You can add RF1276 in your article.

manuka (author)Jasonw32016-01-14

Semtech's LoRa™ SX12xx modules only really differ in their frequency coverage.

SX1278 - 137 MHz to 525 MHz           SX1276 - 137 MHz to 1020 MHz

As I was most interested in 433MHz ISM applications I stayed with  Asian sourced SX1278 offerings.   MicroChip's versatile  LoRa™ RN2483 module has also caught my eye & I may well extend the Instructable to cover it.          Stan.

TheThinker (author)2016-01-10

Excellent project!

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