MQTT vs. TTN and openDTU doesn´t Work

1203v245grad · April 13, 2025, 8:31am

Hello,
I’m struggling to connect an openDTU via MQTT.

The following status:

MQTT Mosquitto installed and running
MQTT connected to TTN and running
openDTU configured and connected to Mosquitto Broker
MQTT Explorer connected to HomeAssistant Host is delivering data from the solar/ac/power etc. topic.

It should be possible to receive the DTU values despite the configured connection to TTN.

I recently set up MQTT for a friend using only the openDTU. It worked immediately, even with auto discovery.

Can anyone help me?

Thank you very much, Martin.

nikito7 · April 13, 2025, 11:38pm

Mqtt integration connect’s only to mosquitto broker.

To connect to TTN, you need a “bridge client” in mosquitto.

github.com/nikito7/easyhan

lorawan/han/mqtt-ttn.conf

23424e1ea

# Mosquitto Addon:
# ...
# customize:
#  active: true
#  folder: mosquitto
# ...

# File:
# /share/mosquitto/ttn.conf

connection ttn
address eu1.cloud.thethings.network:1883
remote_username nikito-app@ttn
remote_password ****key***
remote_clientid easyhan-ttn-in
topic v3/nikito-app@ttn/# in 0 home/ ""

# EOF