feature request : brew by weight

[neuralldev]

Hi zweckj,

do you think it can be possible to detect bbw? add buttons to select 1 dose, 2 doses and normal mode when you have brew by weigth activated? maybe dose definition too?

I can help by capturing wifi frames if needed.

regards

[zweckj]

Maybe? My guess how this goes is: you set it in the app, which means it’s sent to the machine once. The scale then sends its weight to the machines and stops once the weight is reached. But that’s just a theory.
If you have a Mini and a BBW scale you can try to see if you find anything in the mitmproxy/Bluetooth logs.

[neuralldev]

I cannot find the BT directory on my HA, maybe I'm searching at the wrong place.

I had a look at the journal and what I see is that the dose actually for 1 shot is stored in the dose_k1 variable you already retreive, so this afternoon I will make a try of shot and see what the logs are collecting when I set the doses, and if the app receives information about it as well. I think it only works with wifi, the bbw flow is linked to BT point to point from scale to Mini but the settings are sent with the app throught wifi as when wifi is not available all these settings are not reachable.

i will investigate and let you know.

[zweckj]

Oh that's not how this works. You would really need to sniff the traffic between app and machine (for example with mitmproxy) because HA doesn’t know about that traffic at the moment, so there won’t be logs.

[neuralldev]

ok, so I'll sniff the traffic from the AP side. I have a pro infrastructure and can tcpdump between peers. I will let you know if I can decode the requests.

[zweckj]

Keep in mind it’s HTTPS traffic, so you'll need a proxy

[adampetrovic]

FWIW I have implemented brew by weight myself using this integration and an ESPHome connected to my Acaia Lunar.

You can see the implementation here: https://gist.github.com/adampetrovic/448b276d591ee1c1a2ebd9e52119c9f8

[TiStef]

FWIW I have implemented brew by weight myself using this integration and an ESPHome connected to my Acaia Lunar.

You can see the implementation here: https://gist.github.com/adampetrovic/448b276d591ee1c1a2ebd9e52119c9f8

Great work Adam! as an alternative, because now there is an HA integration with the Lunar (thanks again to Zwekj) do you think you can read scale sensors from HA directly and bring them as text sensor inside ESPHOME for controlling logic? Just one config file and control the trigger and action directly on ESPHOME alone.
I am am waiting on the ACAIA and will give it a try...

if only had we access to the brew switch from HA ;)