Mqtt and certificates - BBL CA2 RSA?

Bambu Lab H2 Series Bambu Lab H2C
1

Hi Forum,

Took delivery of my new H2C the other day, very pleased with it! Trying to integrate into my custom bambu_ingest daemon that I am running on a raspberry pi (for my print database and management integration) which uses mqtt, and I’ve discovered that mosquitto refuses to connect to the printer. I can connect mqtt explorer with no problem, and it’s definitely certificate validation. sadly my ver of mosquitto enforces ca validation, so I cannot work around this. Previously I always download the leaf and signing cert from the printers that I onboard, but I’ve noticed the new H2C (which I only have one of) is signed with a different intermediate, and the root cert does not appear to be supplied using openssl –showcerts. The CA is entitled:

issuer=C=CN, O=BBL Technologies Co. Ltd, CN=BBL CA2 RSA
issuer hash: bc53e101

Anyone any clue on where I can get my hands on this certificate? I reckon it should be public but I can’t find it anywhere!

Thanks in advance

Chris

2

after making a new topic I suddenly realised that I hadn’t scoured the GitHub for Bambu Studio and I’ve found it! its the last cert in this file in case anyone else is having trouble with this:

So, my problem is all solved, mqtt all online! thanks all
Chris

3

Mark your solution as the solution.

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4

thanks for the reminder :slight_smile:

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