Hello.
For three days I’ve been trying to get otaa lorawan to work with a Mikrotik wAP lr8 gateway and LILYGO T-Beam v 1.2, but I am getting the same problem over and over. I’ve tried multiple diffrent loraWan libraies on the t-beam.
The problem I am facing is that the t-beam is not recieving the join-accept.
In the mikrotik traffic console I can see both the join request and also the join accept.
As you can see in the picture of the mikrotik console above, the join-accept is sent the same second as the join-request. Shouldn’t there be a 5 seconds delay? Is there a setting in chirpstack for that?
My theory is that the join-accept timing is wrong. And that the t-beam isn’t lilstning for the accept when the accept is sent.
If I can provide any more information that might make it easier for anybody to help me just let me know.
Thanks in advance for any help.
I guess that “Time” isn’t the time of transmission. To transmit a message via RX1 or RX2, the downlink request is sent to the gateway and is programmed for transmission. Transmission is made at a specific time (according to the gateway’s internal clock), and is not done when the request is received.
On the other hand, the gateway transmits immediately for Class C-styled downlinks, which is not applicable to the join procedure.
I’d also assume timing is not the issue here. Are you certain all of your device ↔ server frequencies match? Are you using eu868? As that is the frequency of the join-accept.
If it’s not that, maybe it’s a misconfiguration of the device profile.
Please try running RadioLib’s LoRaWAN examples first as a stand-alone sketch. That way you can confirm that the fundamentals of the mapper sketch work (as it uses RadioLib at its core).
Thanks for the replies I just order a usb to lora dongle to hopefully help me debug it even more. @Liam_Philipp I am very sure, but will dubbelcheck.
As @bns said I will create a stand-alone, just fundamentals sketch to eliminate all other variables.
Will get back in a few days when I’ve got time to test it
Hi again Yesterday I found the problem, and as you suggested it wasn’t a timing problem. Nor was it a frequency problem. Everything was working correct.
Everything except a setting called “network” in the mikrotik gateway. The network setting was set a “private” when I changed it to “public” everything started working :-)… Anyways, thanks for the help
On another note, it turned out that the inbuilt antenna on the mikrotik lr8 isn’t connected from factory so you’ll need to open it up to connect it (it worked for close range without antenna)
I just order a 
Yesterday I found the problem, and as you suggested it wasn’t a timing problem. Nor was it a frequency problem. Everything was working correct.