Tested. Works. Thanks.

I posted a topic on the TTN forum. It seems that the uplinkMessage without application data is valid, it’s a useful way of sending a very short message - like “I’m alive”. That explains that it is sent with a 24h interval.

I will look into it and see if I can raise an issue with TTN. From the documentation frm_payload is optional.

Looked at the payload formatter and made a small change in the provided one from the repository and changed it to javascript with the following code:


function decodeUplink(input) {
var ...

I built domoticz from source (branch development) with this change to fix it for my situation:


diff --git a/hardware/TTNMQTT.cpp b/hardware/TTNMQTT.cpp
index cd11b9873..078e64e8a 100644
--- a/hardware/TTNMQTT.cpp
+++ b/hardware/TTNMQTT.cpp
@@ -732,6 +732,11 @@ void CTTNMQTT::on_message(const ...

Using build 14.166 on raspberry pi.

Every now and then one or more sensors publish a message without a frm_payload. However the decoded_payload is present as probably processed by the provided payload formatter in TTN. These decoded payload values are all based on 0(null) values and have no ...

kiddigital wrote: Tuesday 08 February 2022 17:19 Great [emoji106]

So this topic can be closed [emoji16]

yes

That fixed it. Thanks again. Installed build 14166.

kiddigital wrote: Monday 07 February 2022 20:31 Thank you for the info. A fix has been prepared.

If it gets accepted and merged, it will be in an upcoming beta release.

Thanks for the quick response.

{"tst":1643785455,"topic":"v3/first-lorawan-app@ttn/devices/eui-a84041c7e1843c40/up","qos":0,"retain":0,"payloadlen":1744,"payload":{"end_device_ids":{"device_id":"eui-a84041c7e1843c40","application_ids":{"application_id":"first-lorawan-app"},"dev_eui":"A84041C7E1843C40","join_eui ...

I run Domoticz version 2022.1 on a raspberry pi (debian version 10.11).

I have two sets of identical sensors: (Browan TBHH100 and Dragino LHT65).

Configured the TTN MQTT module and it gets data from The Things Network.

However only one sensor of each is discovered as a device in domoticz. But ...