I’m interested in using electronic shelf labels (ESLs), the (mostly) radio-controlled, mostly eInk-based labels you can find in shops and supermarkets. I’ve been able to find a few brands and label vendors (e.g. on A**express), but failed to find any option to buy “just” a single ESL gateway (used for updating the labels).
My use case, e.g: have a large label on the inside of my door that tells me, in red, stuff like “You can’t leave yet, the following windows are still open: …” etc. Since battery life times are stated to be up to 5 years, ESLs look promising for this. However, what is sold is “solutions” for stores, including a lot of stuff I do not need for my purposes.
Has anybody ventured into this, based on openhab or similar platforms? Are there ESL gateway standards that I should be aware of, or is everything vendor-specific?
Thanks for any ideas and suggestions,