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Read Values sent from Phone to Bluetooth light

asked 2022-08-08 23:39:18 +0000

Sandro004 gravatar image

Hi everoyne I am a total noob so sorry for the maybe dumb question, I am trying to add a Bluetooth light (godox tl60) to my Homeassistant following this video: https://www.youtube.com/watch?v=NIBmi...

I got the report from the communication from my phone with the Bluetooth light, but now I struggle to exctract the essential values to controll the light. In the video the guy sees the values sent to the device, but I get lots of BT Mesh Packages. My guess is that the information I need is in the "Encrypted data and NetMIC" hidden. I did some research and it seems like I have to add a device key to the BTMesh Protocol, where do I find this key for my device or am I doing everything wrong already?

Here you see the logs of me turning the light on and off a couple of times (No. 635-999)

alt text

I really hope someone can help me with this task, I am struggeling for days now

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The HomeAssistant forums might be a better place for this. The likelihood is that someone there has come across this device before and has info about integrating it into HASS.

Attempting to reverse engineer an encrypted protocol is a difficult task.

The light seems to support DMX control, so if you have a suitable DMX interface device, there are HomeAssistant integrations for use with DMX, e.g. https://github.com/jnimmo/hass-dmx

grahamb gravatar imagegrahamb ( 2022-08-09 08:01:21 +0000 )edit

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answered 2023-12-04 08:45:02 +0000

To read values from an encrypted bluetooth mesh network, you need:

  • Network key
  • Application key
  • (possibly, I don't know for sure) Device keys of sending devices
  • IV index

As they are (hopefully) securely stored in your devices, unless you hack in, there's no way to read the encrypted traffic.

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Asked: 2022-08-08 23:39:18 +0000

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Last updated: Dec 04 '23