Trammell Hudson
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
GitHub - osresearch/eink-pricetags: Reverse engineering cheap e-ink price tags

Reverse engineering cheap e-ink price tags. Contribute to osresearch/eink-pricetags development by creating an account on GitHub.

GitHub
Jul 5, 2022 at 5:01pmWeb
Show threadTrammell HudsonJul 5, 2022
Floyd-Steinberg dithering looks nice on the high-density B&W e-ink screen
Show threadTrammell HudsonJul 5, 2022
Provisioning mode with inverse colors
Show threadTrammell HudsonJul 6, 2022
Now with battery voltage measurement in the telemetry
Show threadTrammell HudsonJul 6, 2022
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
GitHub - cibomahto/pya7106: Python library for the A7106 radio module

Python library for the A7106 radio module. Contribute to cibomahto/pya7106 development by creating an account on GitHub.

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Show threadmomoJul 6, 2022
@th
So you could generate art with a chain of those tags that travels from one tag to another and mutates over time.
Great work!
Show threadTrammell HudsonJul 7, 2022
@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
power: measure during image updates and during redisplay · Issue #8 · osresearch/eink-pricetags

how many images can we receive before we drain the battery?

GitHub
Show threadmomoJul 7, 2022
@th Okay that is a huge difference. More than 3 times the power drain.
Show threadTrammell HudsonJul 7, 2022
@momo it's even worse: more than 3000 times the power.
Show threadmomoJul 7, 2022
@th I was missing the k when typing.
Show threadArthur ElsenaarJul 6, 2022
@th Getting more interesting by the hour 😀
Show threadrealcaseyrollins ✝️Jul 5, 2022
This is really cool
Show threadLou 🌝Jul 6, 2022
@th maybe this would interest you then:
https://github.com/furrtek/PrecIR
GitHub - furrtek/PrecIR: You know what this is for ;-)

You know what this is for ;-). Contribute to furrtek/PrecIR development by creating an account on GitHub.

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Show threadGraceJul 6, 2022
@th stuff a QR code generator in it?
Show threadEmacsenJul 5, 2022
@th Awesome!!!
Show threadRiedlerJul 5, 2022
@th just a tiny nitpick, but wouldn't this be reusing instead? as in reduce>reuse>recycle.
Show threadwakest ⁂Jul 5, 2022

@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

Show threadLukeJul 5, 2022
@th @neil great work! Just need a nice binary GUI application for non technical folks to use
Show threadjordanJul 5, 2022
@th I'd love to get my hands on a big old pile of these
Show threadKestralJul 6, 2022
@th ooh I know that ring!
Show threadh2owasser🌊Jul 6, 2022

@th

Do you know, why they throw funktional devices away?

Do you know of a website to buy them?

Show threadadorferJul 6, 2022
@h2owasser @th
I can't find them for less than 12€ (used, for the small ones) in DE.
Any suggestions (apart from shoplifting) appreciated.
Show threadTrammell HudsonJul 6, 2022
@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
Show threadJust an old goatJul 7, 2022
@th I really like the MSP430 platform - it was my introduction to MCU programming!
Show threadMx Autumn Jul 8, 2022
@th@v.st that's really cool! Do you know where is best to obtain some of these price tags?