Quote:
Originally Posted by rkomar
Do these tags even have the electronic backplanes for driving the display? I always imagined that they would be a bare e-ink layer and the "gun" would provide the electromagnetic fields to set what they display.
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You may want to check various items on the Internet on hacking eInk price tags. Two I found useful were
Hacking eInk Price Tags and a set of articles on Hackaday at
e-ink price tag from years back.
The one I played with used a NFC connection so you had to walk around the store to update each tag.