OpenScale works great and kind of does what you want. If you have an old Android phone laying around you can have it persistently connected to a cheap Bluetooth scale. Functional, but at a much have higher power cost than an ESP32 solution. Automated database exports to a local file (on the android device) and Syncthing can move your data around for analysis.
OpenScale works great and kind of does what you want. If you have an old Android phone laying around you can have it persistently connected to a cheap Bluetooth scale. Functional, but at a much have higher power cost than an ESP32 solution. Automated database exports to a local file (on the android device) and Syncthing can move your data around for analysis.
The good folks over at Gadgetbridge might have a solution too, although their list of supported scales looks pretty short.
You might also look into making a project like rmfakecloud to trick your Fitbit device into pushing data to a local server.
Not sure about home assistant though, I’ve never used it.