Rather than make new devices that will turn into e-waste after the event, we're recycling old price tags into networked conference badges. https://github.com/osresearch/eink-pricetags
New images are sent to the tags using the A7106 radio module from another tag, driven by gpio from a Pi. https://github.com/cibomahto/pya7106
@th really glad this type of project is gaining more traction. I recently dumpstered an eink pricetag from trader joes in the US and was hoping someone had figured out a simple way to reuse it.
in berlin I noticed the lidl is using almost 100% eink price tags and they are using multi color ones now too
So you could generate art with a chain of those tags that travels from one tag to another and mutates over time.
@momo tag-to-tag communication is possible, although battery life is a challenge - RX mode takes 18mA, compared to sleeping 5uA. https://github.com/osresearch/eink-pricetags/issues/8
I can't find them for less than 12€ (used, for the small ones) in DE.
Any suggestions (apart from shoplifting) appreciated.
@adorfer @h2owasser these e-ink price tags came on the slow train from china https://item.taobao.com/item.htm?spm=a1z0d.6639537.1997196601.37.73dd74841Tv7Nu&id=629479220903
Floyd-Steinberg dithering looks nice on the high-density B&W e-ink screen