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Hacking eInk Price Tags (2021)

dmitry.gr

21–29 of 29 posts

Re: Hacking eInk Price Tags (2021)

#21
post #9

Earlier quoted context omitted.

Does he mention a price or part number at some point? I'm quite a good way in, and he hasn't mentioned anything, and the description is empty. EDIT: I see the description now, they're called Hanshow Stellar and sell for $20-$25 a piece. Not the price point I thought of when I heard "cheap", but eh.

Most people I know who have played with them just picked ‘em up at their local Walmart…

Hm, how much do they sell there for?

Re: Hacking eInk Price Tags (2021)

#22
This is one of the best firmware-related technical writeups I've ever read on HN. The author doesn't overstate the nightmare that is 8051. I can personally vouch for its horribleness, and its cockroach-like persistence.

As a hobby photographer who mostly shoots black-and-white film, readily available info about generating grayscale images on eInk displays is intriguing from an artistic perspective.

Re: Hacking eInk Price Tags (2021)

#23
post #6

Earlier quoted context omitted.

pudn

How did this get downvoted? I am the author of the original article and that IS the site I meant!!!

Oooh! Just left a top-level comment but I thought I'd reiterate somewhere you might see it - this is a stellar writeup. It's a rare pleasure to find such a technically comprehensive breakdown of embedded firmware on HN.

8051 is the cockroach of embedded systems. Bizarrely resilient, and absolutely disgusting. My very first firmware job (erm, internship) was taking a Cortex-M0+ and making it serve as a pin-for-pin replacement for an 8051. Many crimes against software humanity were committed.

Re: Hacking eInk Price Tags (2021)

#25

I wish there was a self-contained e-ink 10 inch screen that would just sit on my network and accept URLs to display in sequence. Possibly with an equivalent to a Raspberry Pi 3 to SSH into.

https://soldered.com/product/inkplate-10-9-7-e-paper-board-c... You can do that with this.

can vouch for this one - i use it in a few places

Re: Hacking eInk Price Tags (2021)

#29
post #21

Earlier quoted context omitted.

Most people I know who have played with them just picked ‘em up at their local Walmart…

Hm, how much do they sell there for?

This might be the only time I felt like this video was ever going to be related to anything

https://youtu.be/hJ9yBgTp9UQ?si=ouX6-9_L4hXoFWvE

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