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The original was posted on /r/homeassistant by /u/Nice-Ear7560 on 2026-06-18 16:20:52+00:00.
Hi everyone,
I was tired of constantly forgetting to buy milk and then suddenly discovering that we had completely run out.
So I decided it was time to solve this with Home Assistant. I bought the necessary components and, with the help of Claude Code, vibe-coded the firmware for the controllers, as well as a Home Assistant dashboard.
The scales broadcast BLE messages with the current weight once every two hours. The rest of the time, the controller is asleep, so I’m hoping the battery will not need charging very often in this mode.
I have a couple of questions.
First: what would be the best way to automate ordering milk from an online grocery store? I’m based in London, and I was very surprised to find that none of the major supermarkets seem to provide an API for this kind of use case.
Second: what kind of load cells would you recommend for making the scales flatter? I’m now thinking about building similar scales for bread, eggs, and other basic groceries that regularly run out and are almost always needed.
But I would really like a flatter design, so the scales do not take up too much space in the fridge.
