RAK811-N can't join GW

  • Hello All

    i'm totally beginner with LORA stuff, so please sorry for my ignorance !

    i'm playing with my new RAK811-N module. i update the version to

    i have a simple gateway type LoraGO port, which i think but not sure, right connected to TTN. i can see some data in the TTN application data page.

    i send to the RAK811-N the followings configuration :

    0_1525598149277_RAK811-Nconfig.png image url)

    then i'm wainting for "at+rcv=2,0,0" before trying any data
    i never receive it !! instead, sometime i receive "at+rcv=6,0,0"

    i see that on TTN page :
    0_1525598333730_TTN GWtraffic.png

    so i suppose that i'm right connected, because app_eui and dev_eui are right ..?

    please what i'm missing to ?
    what need i do now to send data to TTN ?

    thanks for any help, regards

  • Yes, looks like you joined the network. What happens if you now issue a "at+send=1,1,010101"? You should see the 010101 payload on the device data page and get a confirmation on the serial monitor.

    Regards, Edi

  • Hello Edi, thanks for your reply .. i'm totally disapointed !

    well i read in this forum that i do not try to send anything until i receive
    "at+rcv=3,0,0" (and same in the document "How To Connect LoRa
    RAK811-N To The Things Network V1.0.pdf"

    anyway, after the OTAA configuration i add 20 seconds delay before try to send with "at+send=1,1,010101".
    during this 20 seconds, i see in the TTN console (what i suppose is the right connection) :
    0_1525711560012_TTN GWtraffic 2.png

    then in the application tab :
    0_1525711616248_TTN appdata2.png

    but on my serial monitor, i see "ERROR-6"

    1/ did i miss something in the node configuration ?
    2/ you say "like you joined the network" ==> so the problem is not in my gateway ?? or it may ?

    in the main loop, i try to send every 20seconds. sometime i receive "at+recv=6,0,0" and after that, the error message become ERROR-5

    thanks for your support, the RAK team seem not responsive !


  • Hi Phil,

    OK, you are not joined. The messages you see on the GW log are all join messages (with the arrow icon). ERROR-5 means you are not joined. ERROR-6 means that the MAC is busy. Do you get the -6 just after join?
    I'll look deeper into it in 3 hours, now I have some firefighter training. Can you expand a pair of join request/response from the gateway monitor and post a screenshot?

    CU, Edi

  • time to time, the arrow is green in the gateway log :
    0_1525714733146_TTN GWtraffic 3.png

    ERROR-6 is every time i try to send :
    0_1525714818213_RAK811-Nconfig 2.png

    then after several try, ERROR-5

    some for me, time to lunch ! will be back later

    thanks again to take some time to help me


  • Hm, strange. Can you also expand the message just before the join accepted (the Join Request). I once could not join because the node was too close to the gateway.
    To be honest, with a fresh RAK811, I usually only do a at+get_config=dev_eui to set the dev_eui in ttn, then I do a at+set_config=app_key, an at+set_config=app_eui (but I think this is not necessary, as the app_eui is not needed for otaa) and an at+join=otaa... It sometimes takes up to 5 seconds until the join accepted arrives.

  • I just checked the config from scratch (I did a at+reload to reset the RAK811):
    0_1525726442914_Bildschirmfoto von 2018-05-07 22-50-21.png

  • Oh, I just saw it now: your frequency is rather strange... channel 0 would be 868.100 MHz. Usualy, I see joins on Channel 1 (868.300 MHz), but that should be no problem. What gateway do you operate? Is it a singele channel or a multi channel?

  • here it is, same configuration as before.
    yes it take 3/5 secondes before i see that on TTN page :
    0_1525726214475_TTN GWtraffic 4.png

    what i suspect is a problem with my gateway !
    it is a simple LoraGO port : https://sandboxelectronics.com/?product=lorago-dock-single-channel-lorawan-gateway

    and i'm sort sure if it fully compatible !? can't find usefull information
    do you have an idea about this gateway ?

    i will do a test with at+reload ..

  • Yes, it seams your GW and Node are apart far enough. Maybe try to set your gateway to channel 1 (868.300MHz) and only use the commands I used to configure the RAK811? Sorry, I got no experience with single channel GWs

  • Ah, and it might be a good idea to set the channel mask if you only got a single channel GW:
    at+set_config=mask:0,0001 for channel 0 or
    at+set_config=mask:0,0002 for channel 1

    But as I said, I got no experience with singel channel GWs... maybe I should order one, just for education :tongue:

  • at+reload : nothing better

    what is the command to set "channel1, 868.300MHz" ?
    i try the mask at+set_config=mask:0,0002
    but i receive ERROR-1

    .. but in fact... wich channel is available on this GW !?...
    need to have a look in the arduino code !

    i ordered this single channel GW just for my proof of concept prototype. i wish to rder a better one, but later !
    which one do you suggest ? one with a RPI3 + ??... but there a lot off possibility and i'm not sure which one to choose

  • I love! the RAK831, they got a very good performance. But the set Antenna is not too good. If you got some experience, I reccomend to build a groundplane or coco antenna. Else look for a good 868MHz antenna you can get. I got one fibre glass 868MHz from RAK, but I measured it to have a center frequency of 913MHz...

  • If you want, I can join with your settings to see if on TTN side, everything is ok.

  • hello,

    is that possible to create a second temporary user in TTN account ?
    there is not too much configuration in TTN account, so i suppose that all right.

    i have more doubt about the LoraGO GW configuration !

    what is the command to set "channel0, 868.100MHz" ?
    i try the mask at+set_config=mask:0,0001
    but i receive ERROR-1 ==> so what it the right mask to set up channel 0 please ?
    868.100 is the specified frequency in the arduino firmware, i set up before compiling and flash my GW.


  • Sorry, it's at+set_config=ch_mask:0,0001

  • not better :(

    i see the "join accept" :
    0_1525785637562_TTN GWtraffic 5.png

    but even the ERROR-6 just after the at+send command (ther is 20 seconds between the join and the send command, which is enough to see the join accept in the TTN page) !

    do you use a RAK811 or a RAK811-N (as me) ?


  • I use the RAK811, so I don't need an additional microcontroller

  • Do you have any other gateway in your region where you can go to and try to join your 811? Once joined, it stays joined.

  • no nearest GW is about 30km !

    well i plan to use RAK811 too withtout second CPU.. can you point me to a good tutorial to set up the right tool chain please ?

    well i will have a look to the arduino GW firmware .. but not so confident
    some users report that the RAK811-N fw is bugged .. some others say it's working ..

    if you have any idea please don't hesitate !

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