Building a panel out of e-ink electronic shelf labels

Love the simplicity of the circuit with the daisy-chained uart lines and the use of a time-to-live counter to determine the target so you don't need to give each one an ID.

I&#x27;m super interested in these ESL displays, but couldn&#x27;t really find any (the few I found are very expensive per piece).<p>Are there any special keywords or sources for finding them in Europe?

I love stuff like this. I once went way too far down a rabbit hole with addressable Christmas lights.<p><a href="https:&#x2F;&#x2F;blog.jgc.org&#x2F;2011&#x2F;11&#x2F;turning-ge-color-effects-g-35-christmas.html" rel="nofollow">https:&#x2F;&#x2F;blog.jgc.org&#x2F;2011&#x2F;11&#x2F;turning-ge-color-effects-g-35-c...</a><p>These are also serially linked but the first step is to give each lamp an address and then messages just get passed on until consumed by the appropriate lamp.

I never quite understood why shops use those electronic shelf labels.<p>Most of them <i>can&#x27;t</i> be updated by someone in the store headquarters remotely. Someone has to take a bluetooth programmer device around and program each one by hand. And if they&#x27;re doing that, they might as well just take a handheld label printer or sheet of labels.<p>Benefit of the labels is they&#x27;re clearer than e-ink, brighter, and more colorful (more sales)

This is cool. I like E-Ink displays and also have plans to build a wireless display like this, but was&#x2F;am stuck on how to receive data while also sleeping as deeply as possible, so the linked page about advertising looks helpful!

I&#x27;d run it off of a LiFePO4 (bioenno or something), but that&#x27;s the ham in me (also I&#x27;d probably give it powerpole connectors just to further justify how much I spent on my crimpers haha).<p>Really cool!

Just came to say that I am loving rbaron’s write ups - thank you introducing me to them @frxx.

What a coincidence that this [1] popped up in my youtube feed today.<p>[1]<a href="https:&#x2F;&#x2F;youtu.be&#x2F;CLmotCeMlq0" rel="nofollow">https:&#x2F;&#x2F;youtu.be&#x2F;CLmotCeMlq0</a>

That&#x27;s really neat! I wonder if (and how long) they would run off a supercap or harvested wifi energy.