# Arduino UNO + Dragino Lora Shield v1.4 can connect to TTN v2 but not on TTN v3 AU915

**URL:** <https://www.thethingsnetwork.org/forum/t/arduino-uno-dragino-lora-shield-v1-4-can-connect-to-ttn-v2-but-not-on-ttn-v3-au915/51051>\
**Category:** Dragino\
**Created:** [August 27, 2021, 2:11am UTC](https://www.thethingsnetwork.org/forum/t/arduino-uno-dragino-lora-shield-v1-4-can-connect-to-ttn-v2-but-not-on-ttn-v3-au915/51051 "2021-08-27T02:11:37Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![marzukikamal](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/marzukikamal/32/39232_2.png) [@marzukikamal](https://www.thethingsnetwork.org/forum/u/marzukikamal)\
**Post date:** [August 27, 2021, 2:11am UTC](https://www.thethingsnetwork.org/forum/t/arduino-uno-dragino-lora-shield-v1-4-can-connect-to-ttn-v2-but-not-on-ttn-v3-au915/51051/1 "2021-08-27T02:11:37Z")

</div>

Hi,

I’m trying to connect the arduino to TTN v3 via ABP on AU915. On TTN v2, both ABP and OTAA work fine. But since now, v2 is read only, I need to setup end device on TTN v3.

My hardware is:  
Arduino UNO with Dragino Lora Shield v1.4 AU915

Steps I’ve taken,

- use LoraWAN version 1.0.2, 1.0.3
- tick reset frame counter
- add RX1 Delay 1s with 0 offset
- RX2 data rate 8 with freq 923300000

But still, I couldn’t received the output in TTN.

The serial monitor seems fine.

```auto
Starting
09:54:15.994 -> 8615: EV_TXSTART
09:54:15.994 -> Packet queued for frequency (Hz): 917600000
09:54:18.091 -> 139843: EV_TXCOMPLETE (includes waiting for RX windows)
09:55:18.096 -> 3890317: EV_TXSTART
09:55:18.096 -> Packet queued for frequency (Hz): 917400000
09:55:22.040 -> 4021552: EV_TXCOMPLETE (includes waiting for RX windows)
09:56:20.219 -> 7772029: EV_TXSTART
09:56:20.256 -> Packet queued for frequency (Hz): 917800000
09:56:22.349 -> 7903267: EV_TXCOMPLETE (includes waiting for RX windows)

```

Also, I don’t have access to gateway log, so I cannot check anything gateway side.

I’m using MCCI LowaWAN LMIC 4.0.0 library ([GitHub - mcci-catena/arduino-lmic: LoraWAN-MAC-in-C library, adapted to run under the Arduino envi](https://github.com/mcci-catena/arduino-lmic)), with setting as follow:

lmic\_project\_config.h

```cpp
// project-specific definitions
//#define CFG_eu868 1
//#define CFG_us915 1
#define CFG_au915 1
//#define CFG_as923 1
// #define LMIC_COUNTRY_CODE LMIC_COUNTRY_CODE_JP	/* for as923-JP */
//#define CFG_kr920 1
//#define CFG_in866 1
#define CFG_sx1276_radio 1
//#define LMIC_USE_INTERRUPTS

#define LMIC_LORAWAN_SPEC_VERSION LMIC_LORAWAN_SPEC_VERSION_1_0_2
#define DISABLE_PING
#define DISABLE_BEACONS
#define LMIC_ENABLE_DeviceTimeReq 0 

```

My Arduino sketch

```cpp
/ *******************************************************************************
 * Copyright (c) 2015 Thomas Telkamp and Matthijs Kooijman
 * Copyright (c) 2018 Terry Moore, MCCI
 *
 * Permission is hereby granted, free of charge, to anyone
 * obtaining a copy of this document and accompanying files,
 * to do whatever they want with them without any restriction,
 * including, but not limited to, copying, modification and redistribution.
 * NO WARRANTY OF ANY KIND IS PROVIDED.
 *
 * This example sends a valid LoRaWAN packet with payload "Hello,
 * world!", using frequency and encryption settings matching those of
 * the The Things Network.
 *
 * This uses ABP (Activation-by-personalisation), where a DevAddr and
 * Session keys are preconfigured (unlike OTAA, where a DevEUI and
 * application key is configured, while the DevAddr and session keys are
 * assigned/generated in the over-the-air-activation procedure).
 *
 * Note: LoRaWAN per sub-band duty-cycle limitation is enforced (1% in
 * g1, 0.1% in g2), but not the TTN fair usage policy (which is probably
 * violated by this sketch when left running for longer)!
 *
 * To use this sketch, first register your application and device with
 * the things network, to set or generate a DevAddr, NwkSKey and
 * AppSKey. Each device should have their own unique values for these
 * fields.
 *
 * Do not forget to define the radio type correctly in
 * arduino-lmic/project_config/lmic_project_config.h or from your BOARDS.txt.
 *
 ******************************************************************************* /

 // References:
 // [feather] adafruit-feather-m0-radio-with-lora-module.pdf

#include <lmic.h>
#include <hal/hal.h>
#include <SPI.h>

//
// For normal use, we require that you edit the sketch to replace FILLMEIN
// with values assigned by the TTN console. However, for regression tests,
// we want to be able to compile these scripts. The regression tests define
// COMPILE_REGRESSION_TEST, and in that case we define FILLMEIN to a non-
// working but innocuous value.
//
#ifdef COMPILE_REGRESSION_TEST
# define FILLMEIN 0
#else
# warning "You must replace the values marked FILLMEIN with real values from the TTN control panel!"
# define FILLMEIN (#dont edit this, edit the lines that use FILLMEIN)
#endif

// LoRaWAN NwkSKey, network session key
// This should be in big-endian (aka msb).
static const PROGMEM u1_t NWKSKEY[16] = { 0xA1, 0xA4, 0xEB, 0x5F, 0x2A, 0x9A, 0x0F, 0xDE, 0x1C, 0xDD, 0xA2, 0xED, 0x4C, 0xA2, 0x30, 0x7B };

// LoRaWAN AppSKey, application session key
// This should also be in big-endian (aka msb).
static const u1_t PROGMEM APPSKEY[16] = { 0x9E, 0x9F, 0x0C, 0x9B, 0x22, 0xD0, 0x25, 0x48, 0x8F, 0x16, 0x6A, 0x5E, 0x8A, 0x88, 0xFA, 0x8D };

// LoRaWAN end-device address (DevAddr)
// See http://thethingsnetwork.org/wiki/AddressSpace
// The library converts the address to network byte order as needed, so this should be in big-endian (aka msb) too.
static const u4_t DEVADDR = 0x260D3967; // <-- Change this address for every node!

// These callbacks are only used in over-the-air activation, so they are
// left empty here (we cannot leave them out completely unless
// DISABLE_JOIN is set in arduino-lmic/project_config/lmic_project_config.h,
// otherwise the linker will complain).
void os_getArtEui (u1_t* buf) { }
void os_getDevEui (u1_t* buf) { }
void os_getDevKey (u1_t* buf) { }

static uint8_t mydata[] = "Hello, world!";
static osjob_t sendjob;

// Schedule TX every this many seconds (might become longer due to duty
// cycle limitations).
const unsigned TX_INTERVAL = 60;

// Pin mapping
const lmic_pinmap lmic_pins = {
    .nss = 10,
    .rxtx = LMIC_UNUSED_PIN,
    .rst = 9,
    .dio = {2, 6, 7},
};

void onEvent (ev_t ev) {
    Serial.print(os_getTime());
    Serial.print(": ");
    switch(ev) {
        case EV_SCAN_TIMEOUT:
            Serial.println(F("EV_SCAN_TIMEOUT"));
            break;
        case EV_BEACON_FOUND:
            Serial.println(F("EV_BEACON_FOUND"));
            break;
        case EV_BEACON_MISSED:
            Serial.println(F("EV_BEACON_MISSED"));
            break;
        case EV_BEACON_TRACKED:
            Serial.println(F("EV_BEACON_TRACKED"));
            break;
        case EV_JOINING:
            Serial.println(F("EV_JOINING"));
            break;
        case EV_JOINED:
            Serial.println(F("EV_JOINED"));
            break;
        /*
        || This event is defined but not used in the code. No
        || point in wasting codespace on it.
        ||
        || case EV_RFU1:
        || Serial.println(F("EV_RFU1"));
        || break;
        */
        case EV_JOIN_FAILED:
            Serial.println(F("EV_JOIN_FAILED"));
            break;
        case EV_REJOIN_FAILED:
            Serial.println(F("EV_REJOIN_FAILED"));
            break;
        case EV_TXCOMPLETE:
            Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)"));
            if (LMIC.txrxFlags & TXRX_ACK)
              Serial.println(F("Received ack"));
            if (LMIC.dataLen) {
              Serial.println(F("Received "));
              Serial.println(LMIC.dataLen);
              Serial.println(F(" bytes of payload"));
            }
            // Schedule next transmission
            os_setTimedCallback(&sendjob, os_getTime()+sec2osticks(TX_INTERVAL), do_send);
            break;
        case EV_LOST_TSYNC:
            Serial.println(F("EV_LOST_TSYNC"));
            break;
        case EV_RESET:
            Serial.println(F("EV_RESET"));
            break;
        case EV_RXCOMPLETE:
            // data received in ping slot
            Serial.println(F("EV_RXCOMPLETE"));
            break;
        case EV_LINK_DEAD:
            Serial.println(F("EV_LINK_DEAD"));
            break;
        case EV_LINK_ALIVE:
            Serial.println(F("EV_LINK_ALIVE"));
            break;
        /*
        || This event is defined but not used in the code. No
        || point in wasting codespace on it.
        ||
        || case EV_SCAN_FOUND:
        || Serial.println(F("EV_SCAN_FOUND"));
        || break;
        */
        case EV_TXSTART:
            Serial.println(F("EV_TXSTART"));
            break;
        case EV_TXCANCELED:
            Serial.println(F("EV_TXCANCELED"));
            break;
        case EV_RXSTART:
            /* do not print anything -- it wrecks timing */
            break;
        case EV_JOIN_TXCOMPLETE:
            Serial.println(F("EV_JOIN_TXCOMPLETE: no JoinAccept"));
            break;
        default:
            Serial.print(F("Unknown event: "));
            Serial.println((unsigned) ev);
            break;
    }
}

void do_send(osjob_t* j){
    // Check if there is not a current TX/RX job running
    if (LMIC.opmode & OP_TXRXPEND) {
        Serial.println(F("OP_TXRXPEND, not sending"));
    } else {
        // Prepare upstream data transmission at the next possible time.
        LMIC_setTxData2(1, mydata, sizeof(mydata)-1, 0);
        Serial.print(F("Packet queued for frequency (Hz): "));
        Serial.println(LMIC.freq);
    }
    // Next TX is scheduled after TX_COMPLETE event.
}

void setup() {
// pinMode(13, OUTPUT);
    while (!Serial); // wait for Serial to be initialized
    Serial.begin(115200);
    delay(100); // per sample code on RF_95 test
    Serial.println(F("Starting"));

    #ifdef VCC_ENABLE
    // For Pinoccio Scout boards
    pinMode(VCC_ENABLE, OUTPUT);
    digitalWrite(VCC_ENABLE, HIGH);
    delay(1000);
    #endif

    // LMIC init
    os_init();
    // Reset the MAC state. Session and pending data transfers will be discarded.
    LMIC_reset();

    // Set static session parameters. Instead of dynamically establishing a session
    // by joining the network, precomputed session parameters are be provided.
    #ifdef PROGMEM
    // On AVR, these values are stored in flash and only copied to RAM
    // once. Copy them to a temporary buffer here, LMIC_setSession will
    // copy them into a buffer of its own again.
    uint8_t appskey[sizeof(APPSKEY)];
    uint8_t nwkskey[sizeof(NWKSKEY)];
    memcpy_P(appskey, APPSKEY, sizeof(APPSKEY));
    memcpy_P(nwkskey, NWKSKEY, sizeof(NWKSKEY));
    LMIC_setSession (0x13, DEVADDR, nwkskey, appskey);
    #else
    // If not running an AVR with PROGMEM, just use the arrays directly
    LMIC_setSession (0x13, DEVADDR, NWKSKEY, APPSKEY);
    #endif

    #if defined(CFG_eu868)
    // Set up the channels used by the Things Network, which corresponds
    // to the defaults of most gateways. Without this, only three base
    // channels from the LoRaWAN specification are used, which certainly
    // works, so it is good for debugging, but can overload those
    // frequencies, so be sure to configure the full frequency range of
    // your network here (unless your network autoconfigures them).
    // Setting up channels should happen after LMIC_setSession, as that
    // configures the minimal channel set. The LMIC doesn't let you change
    // the three basic settings, but we show them here.
    LMIC_setupChannel(0, 868100000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
    LMIC_setupChannel(1, 868300000, DR_RANGE_MAP(DR_SF12, DR_SF7B), BAND_CENTI); // g-band
    LMIC_setupChannel(2, 868500000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
    LMIC_setupChannel(3, 867100000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
    LMIC_setupChannel(4, 867300000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
    LMIC_setupChannel(5, 867500000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
    LMIC_setupChannel(6, 867700000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
    LMIC_setupChannel(7, 867900000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band
    LMIC_setupChannel(8, 868800000, DR_RANGE_MAP(DR_FSK, DR_FSK), BAND_MILLI); // g2-band
    // TTN defines an additional channel at 869.525Mhz using SF9 for class B
    // devices' ping slots. LMIC does not have an easy way to define set this
    // frequency and support for class B is spotty and untested, so this
    // frequency is not configured here.
    #elif defined(CFG_us915) || defined(CFG_au915)
    // NA-US and AU channels 0-71 are configured automatically
    // but only one group of 8 should (a subband) should be active
    // TTN recommends the second sub band, 1 in a zero based count.
    // https://github.com/TheThingsNetwork/gateway-conf/blob/master/US-global_conf.json
    LMIC_selectSubBand(1);
    #elif defined(CFG_as923)
    // Set up the channels used in your country. Only two are defined by default,
    // and they cannot be changed. Use BAND_CENTI to indicate 1% duty cycle.
    // LMIC_setupChannel(0, 923200000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI);
    // LMIC_setupChannel(1, 923400000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI);

    // ... extra definitions for channels 2..n here
    #elif defined(CFG_kr920)
    // Set up the channels used in your country. Three are defined by default,
    // and they cannot be changed. Duty cycle doesn't matter, but is conventionally
    // BAND_MILLI.
    // LMIC_setupChannel(0, 922100000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_MILLI);
    // LMIC_setupChannel(1, 922300000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_MILLI);
    // LMIC_setupChannel(2, 922500000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_MILLI);

    // ... extra definitions for channels 3..n here.
    #elif defined(CFG_in866)
    // Set up the channels used in your country. Three are defined by default,
    // and they cannot be changed. Duty cycle doesn't matter, but is conventionally
    // BAND_MILLI.
    // LMIC_setupChannel(0, 865062500, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_MILLI);
    // LMIC_setupChannel(1, 865402500, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_MILLI);
    // LMIC_setupChannel(2, 865985000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_MILLI);

    // ... extra definitions for channels 3..n here.
    #else
    # error Region not supported
    #endif

    // Disable link check validation
    LMIC_setLinkCheckMode(0);

    // TTN uses SF9 for its RX2 window.
    LMIC.dn2Dr = DR_SF9;

    LMIC_setClockError(MAX_CLOCK_ERROR * 5 / 100);

    // Set data rate and transmit power for uplink
    LMIC_setDrTxpow(DR_SF7,14);

    // Start job
    do_send(&sendjob);
}

void loop() {
    unsigned long now;
    now = millis();
    if ((now & 512) != 0) {
      digitalWrite(13, HIGH);
    }
    else {
      digitalWrite(13, LOW);
    }

    os_runloop_once();

}

```

TTN v3 setting  
 ![Screen Shot 2021-08-23 at 8.57.50 am](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/2/8/281b4409b0597bad173e72fa279cdfbb3aa3eb5a.png)  
 ![Screen Shot 2021-08-23 at 8.58.24 am](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/7/1/71f1212a36d060dc8214967519726ec68b1cecb4.png)  
 ![Screen Shot 2021-08-23 at 8.58.46 am](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/6/d/6dc55499d9aaafa0d9f1610a1de1b3a729a19681.png)

---

<div class="post-metadata">

**Author:** ![meringuz](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/meringuz/32/35697_2.png) [@meringuz](https://www.thethingsnetwork.org/forum/u/meringuz)\
**Post date:** [October 26, 2021, 10:35pm UTC](https://www.thethingsnetwork.org/forum/t/arduino-uno-dragino-lora-shield-v1-4-can-connect-to-ttn-v2-but-not-on-ttn-v3-au915/51051/2 "2021-10-26T22:35:05Z")

</div>

hi, did you found any solution?

---

<div class="post-metadata">

**Author:** ![marzukikamal](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/marzukikamal/32/39232_2.png) [@marzukikamal](https://www.thethingsnetwork.org/forum/u/marzukikamal)\
**Post date:** [October 26, 2021, 11:48pm UTC](https://www.thethingsnetwork.org/forum/t/arduino-uno-dragino-lora-shield-v1-4-can-connect-to-ttn-v2-but-not-on-ttn-v3-au915/51051/3 "2021-10-26T23:48:57Z")

</div>

I’ve tested around different gateway and it works with the same configuration. Probably something wrong with first gateway I’ve tested with.