Alex Merchen
Published © GPL3+

LoRa Weather Buoy

Build a smart weather buoy to sit in the water and look on Cayenne for status updates

IntermediateFull instructions provided5 hours1,684
LoRa Weather Buoy

Things used in this project

Hardware components

Helium Developer Kit
Helium Developer Kit
×1
3/4" Pine Wood
×1
Tupperware
×1
Wood Glue
×1
Acrylic Paint
×1
Caulk
×1

Software apps and online services

Arduino IDE
Arduino IDE
Cayenne
myDevices Cayenne

Hand tools and fabrication machines

Shapeoko
Sand Paper

Story

Read more

Schematics

Overall Design of Weather Buoy

Code

Arduino Code

Arduino
Load it onto the Helium Starter Kit
#include "LoRaWAN.h"

const char *devEui = "FILL_ME_IN";
const char *appEui = "FILL_ME_IN";
const char *appKey = "FILL_ME_IN";

#include <LSM6DSOSensor.h>
#include <LIS2DW12Sensor.h>
#include <LIS2MDLSensor.h>
#include <LPS22HHSensor.h>
#include <STTS751Sensor.h>
#include <HTS221Sensor.h>

#ifdef ARDUINO_SAM_DUE
#define DEV_I2C Wire1
#elif defined(ARDUINO_ARCH_STM32)
#define DEV_I2C Wire
#elif defined(ARDUINO_ARCH_AVR)
#define DEV_I2C Wire
#else
#define DEV_I2C Wire
#endif
#define SerialPort Serial

LSM6DSOSensor *AccGyr;
LIS2DW12Sensor *Acc2;

const uint8_t payload[] = "";

void setup( void )
{
    Serial.begin(9600);
    
    while (!Serial) { }

    // US Region
    LoRaWAN.begin(US915);
    // Helium SubBand
    LoRaWAN.setSubBand(2);
    // Disable Adaptive Data Rate
    LoRaWAN.setADR(false);
    // Set Data Rate 1 - Max Payload 53 Bytes
    LoRaWAN.setDataRate(1);
    // Device IDs and Key
    LoRaWAN.joinOTAA(appEui, appKey, devEui);

    Serial.println("JOIN( )");
}

void loop( void )
{
    int32_t accelerometer[3];
    AccGyr->Get_X_Axes(accelerometer);
    payload[] = Str(accelerometer[0]) & "," & str(accelerometer[1]) & "," & str(accelerometer[2])
    if (LoRaWAN.joined() && !LoRaWAN.busy())
    {
        Serial.print("TRANSMIT( ");
        Serial.print("TimeOnAir: ");
        Serial.print(LoRaWAN.getTimeOnAir());
        Serial.print(", NextTxTime: ");
        Serial.print(LoRaWAN.getNextTxTime());
        Serial.print(", MaxPayloadSize: ");
        Serial.print(LoRaWAN.getMaxPayloadSize());
        Serial.print(", DR: ");
        Serial.print(LoRaWAN.getDataRate());
        Serial.print(", TxPower: ");
        Serial.print(LoRaWAN.getTxPower(), 1);
        Serial.print("dbm, UpLinkCounter: ");
        Serial.print(LoRaWAN.getUpLinkCounter());
        Serial.print(", DownLinkCounter: ");
        Serial.print(LoRaWAN.getDownLinkCounter());
        Serial.println(" )");

        // Send Packet
        LoRaWAN.sendPacket(1, payload, sizeof(payload));
    }

    delay(20000); //20 Seconds
}

Credits

Alex Merchen

Alex Merchen

20 projects • 35 followers
I'm an EE with a Masters in ECE. I like building things.

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