OpenEPaperLink Accesspoints, optionally with some preprogrammed tags

All details can be found here: OpenEPaperLink Accesspoint

Everything in the OpenEPaperLink project is open-source, but we haven't gone through the trouble of getting the OSHWA certification yet. Contributions to the project are very welcome!

What the heck can I do with this?

You can use this set to setup your own E-Paper display system at home! The displays can display nearly anything. Just send a jpg file to the AP, and it can be displayed on one of the displays!

The AP can generate all kinds of content itself too! Stuff like weather forecasts and the date can be shown on a tag, making for a nice dynamic little screen.

It's also possible to use the AP with HomeAssistant thanks to an integration.

Background info

These pricetags are recycled tags that were used in stores, and run on a custom firmware called OpenEPaperLink. The pricetags themselves run on a undocumented SOC, the ZBS243. It has a 8051 core, and the SOC has been carefully reverse engineered by Dmitry.gr

The AP is based on an ESP32 and uses another type of pricetag as a radio interface. The system uses unencrypted, Zigbee-like (802.15.4) packets on 2.4Ghz. Thanks to a web-interface on the ESP32, the accesspoint is fully self-contained.

Things you should know:

• While I'm pretty convinced these things work, I can't guarantee after-sales support. We do however have a lot of information on the GitHub repository, and channel on a discord server with some pretty knowledgeable folks.
• As far as I understand, the tags and ESP32 module are CE and FCC approved. Still, you got to make sure you're allowed to use them where you live!
• As shipping batteries can cause issues, the tags ship without batteries. You'll have to buy them yourself; the tags take CR2450 batteries, they can be found online. The 2.9" tags take 2 of them.
• As a seller, I assume no liability for the use of these devices. This is hobby-DIY-maker stuff, made by a hobbyist. Please don't use this in a commercial setting, or where its functioning or malfunctioning may cause, or lead to, directly or indirectly, damage to property, damage to life or limb, or psychological distress. I'm no lawyer, but I basically don't want to get sued over providing people with some nice toys to tinker with. By buying my stuff, you agree to this!

What you will receive:

Kit:

• 3D-printed case
• Wemos S2 Mini
• Flex PCB
• Segmented display (UK) pricetag PCB
• WS2812B LED
• 1206 1µF capacitor

Some soldering is required, but it shouldn't be too difficult. If you have some experience with a soldering iron, you can do this. You'll need to program the ESP32 using the OpenEPaperLink Web Flasher or PlatformIO. The ESP32, in turn, will program the segmented price tag. Assembly of the 3D-printed case requires a little bit of glue.

Assembled:

• One assembled, programmed, and fully tested Mini-AP

Optional price tags:

• Either 2.9", or 2.9" and some 1.54" tags.
• 296x128 or 152x152 pixels, Black-White-Red
• These tags aren't new! They were used in a store, and may show some light cosmetic damage
• Programmed with the OpenEPaperLink firmware
• No batteries

Optional power supply kit:

• 230V -> 5V 1A USB power supply
• USB -> USB-C cable

Made possible by:

• Dmitry
• ATC1441
• nlimper
• jonasniesner
• foorschtbar
• All the other nice people in ATC1441's discord server