Hi,
I’ve got a new Bluelevel R sensor which is monitoring the water fill level for a Graf cistern via the myCistern app.
I am wondering if there is any chance to write a homeassistant integration for the water fill level.
Anybody else here with experience in grabbing direct data from a Bluelevel R sensor or from the myCistern cloud?
Bluetooth?
If it is, look out for the single connection limitation of BLE in your reverse engineering endeavours if it isn’t already integrated to HomeAssistant.
Does the vendor have an API that is well documented?
Nordic has tools available such as nRF Connect to help you sniff the traffic.
If it is WiFi, WireShark may assist in tracing data packets.
If you want to screen scrape from the cloud, maybe look at tools such as Beautiful Soup if the data is not presented in JSON format.
It does say it is HomeAssistant compatible on the website. Are the vendor documents insufficient or their technical support inadequate?
What have you done so far?
Hi,
I’m planning to get this, too.
Based on this post, I got in contact with the manufacturer and they confirmed, that the homeassistant Integration ist currently in development.
I am now trying to get in contact with their developer for more information and maybe some first Tests 
Can update here as soon as I have more news about this.
Hey everyone, thanks for the discussion here. I’m one of the developers behind BlueLevel R, and I wanted to chime in with an update.
We’re actively working on the release of a HACS integration. From the technical side, things are pretty much ready and we’ve submitted the integration for review to be added to the official HACS repository. However, it looks like the reviewers are facing some backlog at the moment, so official approval could take some time.
To speed things up in the meantime, we’re currently working on a manual for setting up and using the plugin. Once that’s done, we plan to publish a pre-release. This will mean early movers will need to add our repository to their HACS instance manually, but that’s fast and easy to do.
I’ll keep this thread updated as soon as the plugin is available. Appreciate the patience and interest!
looking forward to have a look into the integration
Great!
A robust API and easy method of updating firmware should be on your priority list. Once the specifications of the API are locked in and well documented, it should be easy to write the integration and adjust the firmware to remedy any subsequent deficiencies without having to update the API.
The API will enable others to integrate it into their product, not just HomeAssistant, but the wider automation industry, not just the Arduino hobby ecosphere, but into solutions offered by industry consultants, and vendors.
Please note the keen interest in HomeAssistant circles to have local, not cloud access, direct to your hardware, so your API should support that, and if you wish, your alternate cloud offering can build on that via any software you should consider for less technically minded people.