To test the MQTT connection via TRB141, you can try using an MQTT client such as MQTT.fx or MQTT Explorer. These clients will allow you to connect to the AWS broker and subscribe to the router/id/# topic to see if any messages are being published by the TRB141.
Regarding the 1-wire sensor, you can use the OWFS (One-Wire File System) package to access the sensor data. First, you need to install the package using the command `opkg update && opkg install owfs`. Once installed, you can access the sensor data by mounting the file system using the command `owfs -u /mnt/1wire/`. This will create a virtual file system in the /mnt/1wire directory, which you can browse using the `ls` command. The sensor data should be accessible in one of the directories under /mnt/1wire.
To view the 1-wire data from the TRB141 using ubus call command, you can try the following:
1. List the available ubus objects by running the command `ubus list`.
2. Look for the object related to the 1-wire interface. It may be called something like "owserver".
3. Call the "list" method of the object to get a list of available sensors. For example, if the object is named "owserver", you can run the command `ubus call owserver list`.
4. Once you have the list of sensors, you can call the "read" method to get the sensor data. For example, if the sensor you want to read is at address "28.5A1F01000000", you can run the command `ubus call owserver read '{"addr":"28.5A1F01000000"}'`.