Dragino LGT-92 - LoRaWAN GPS Tracker

The Cayenne map offers the option of displaying current position only or a track of reports by day. There is also a history function that allows display of previous days.

As far as instructions, you just need to make sure your devices are configured to uplink data in Cayenne LPP format, set your TTN application payload format to Cayenne, add the Cayenne integration to your TTN application, and then add your devices to your Cayenne account.

My device is not sending any data: i can‘t see any data in the console.

Is there a possibilty to do some basic tests with AT-commands?

Do you have a gateway around you? (sorry for the question :slight_smile: ).
If you check the device manual, you will find also how to connect to it via serial.

That‘s the problem: I don‘t have a gateway around or near my place.
:frowning:

What checks would you do?

If there aren’t gateways, of course the device is unusable. It is not something that you use standalone, you need a LoRaWAN infrastructure. Sorry for this question too, but why you bought it?

Look at the map and go to the nearest place where there is a gateway (TTNMapper for a better idea of coverage). If you configured everything well, you will see a packet every ~ 3 minutes.

It’s a GPS tracker - so I bought it for mobile application.

I found out there are gateways near me, but I do not see data in TTN from the sensor.

I set it up like shown here:

Any recommendations how to find my error?

Hi guys,

I have this Dragino LGT92-AA here.
I do not get it to work.
I inserted evyrtything like shown in the manual https://www.dragino.com/downloads/index.php?dir=LGT_92/&file=LGT-92_LoRa_GPS_Tracker_UserManual_v1.4.2.pdf

If I use a USB TTL device I see this after poweron in putty (GPS data anonymized):

Roll=-366  Pitch=925
South: 39.3005 
East: 78.9499

***** UpLinkCounter= 4 *****
TX on freq 868500000 Hz at DR 0
Server_TX_DUTYCYCLE: 60000
seng data
txDone
rxTimeOut
rxTimeOut

In the TTN console I do not see any data coming in.
I do not have a gateway but drove around many times in areas where gateways are.

AT+CFG gives me this (EUIs, Addresses and Keys anonymized):

AT+DEUI=a8 40 41 00 01 81 91 ff
AT+DADDR=01819100
AT+APPKEY=b9 a1 87 32 78 5f cc a7 91 9a 85 f2 f1 83 ff ff
AT+NWKSKEY=eb e2 5d 6a fa ea 35 24 56 de c4 47 24 14 ff ff
AT+APPSKEY=32 17 be 97 a2 b1 3b 33 45 67 5c 8f a7 2a ff ff
AT+APPEUI=ff a3 c1 75 3b 3b 73 ff
AT+ADR=1
AT+TXP=0
AT+DR=0
AT+DCS=0
AT+PNM=1
AT+RX2FQ=869525000
AT+RX2DR=0
AT+RX1DL=1000
AT+RX2DL=2000
AT+JN1DL=5000
AT+JN2DL=6000
AT+NJM=1
AT+NWKID=00 00 00 00
AT+FCU=7
AT+FCD=0
AT+CLASS=A
AT+NJS=1
AT+RECVB=0:
AT+RECV=0:
AT+VER=v1.4 AT+CFM=0
AT+CFS=0
AT+SNR=0
AT+RSSI=0
AT+TDC=300000
AT+ACE=60000
AT+PORT=2
AT+CHS=0
AT+SGM=0
AT+RX1WTO=0
AT+RX2WTO=0

Can you help me looking for the error?
What can I do to get data in TTN?

greetz
duffy6

Hi,

You may refer to the below movie

If you can find unuploading date, please try to set:

AT+SGM=1
ATZ

Regards

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Did you create an application, register the device, etc?
Mine worked just out of the box, without touching it at all but after properly setting everything in the console.

I got it working.

How do you setup the device in Cayenne?

Payload config (in TTN) as „custom“ or „Cayenne LLP“?

I used “Cayenne LLP”, and the standard payload from the LGT-92 worked fine

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Got my LGT-92 this week, everything seems to be working fine except for the ALARM Button, it doesn’t seem to work, tried downgrading the device to v1.3 and back to v1.4, still experiencing the same issue.

Hello, I have set LGT-92 using AT+DR=0 until AT+DR=5 when transmit data to Lorawan Gateway, but there is no data is transmited using SF12, is only can transmit using SF7-SF10. Is it posible to using SF12 when transmit data? I’m using kerlink station Gateway and TTN Server. Thanks

Hello, I have used AT+SGM=1 to active the motion sensor to get 12 bytes
payload. but somehow i am only getting 8 bytes could you please help me what went wrong?
AT+SGM=1
Payload: 05 32 8e f3 28 37 0f af

AT+DEUI=a8 40 41 00 01 81 92 61
AT+DADDR=01819261
AT+APPKEY=6d bd db 19 99 45 9c da 6f ab 99 2b 53 76 65 a7
AT+NWKSKEY=12 ea 49 15 97 41 99 19 68 71 94 b4 5d 63 6f 32
AT+APPSKEY=a5 87 e8 df cf a1 74 bc a7 82 91 29 57 be ca a3
AT+APPEUI=6d 2e 27 d1 5b 9c dc 5b
AT+ADR=1
AT+TXP=1
AT+DR=0
AT+DCS=0
AT+PNM=1
AT+RX2FQ=923300000
AT+RX2DR=8
AT+RX1DL=1000
AT+RX2DL=2000
AT+JN1DL=5000
AT+JN2DL=6000
AT+NJM=1
AT+NWKID=00 00 00 00
AT+FCU=3
AT+FCD=0
AT+CLASS=A
AT+NJS=1
AT+RECVB=0:
AT+RECV=0:
AT+VER=v1.4 US915
AT+CFM=0
AT+CFS=0
AT+SNR=0
AT+RSSI=0
AT+TDC=180000
AT+ACE=60000
AT+PORT=2
AT+CHS=0
AT+SGM=1
AT+CHE=1
902.3
AT+RX1WTO=0
AT+RX2WTO=0

I noticed that it only work while GPS fixed.

Did you RTFM?
It has no function out of the box but there is a way to program it.

Hi there,
it makes my sick spending useless hours of trying things to get working…maybe all this lora stuff is only for makers and people having a looot of time and no other things to do and they have fun spending hours in this…I dont, I want to use things and trying to make them working.
I tried to get cayenne Integration work with my ttn device and of course nothing worked.
The Android app was crashing all the time when creating a new device and so on and cayenne did not show anything.
So could anyone write a walk thru how to make the gps position of the lgt-92 visible in a map like ordinary gsm gps tracker does (much easier and user orientated).
I think cayenne might be the “easiest” and costless way.

first check - is your device supported by Cayene

There are guys that runs the lgt92 with Cayenne regardless its not mentioned in this list. This list shows anyway less devices as the app does.

The problem with ‘walkthroughs’ is that they take a great deal of time to write and check. Ideally the manufacturers of products (i.e. the ones making the profits) would write them, but often they appear to rely on volunteers to support their products, so ‘walkthroughs’ may not be produced.

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