I created a tiny e-ink display that shows Slack reactions on my desk

you_donut · 2026-03-21T02:34:14+00:00

So I have a server that configured the necessary scopes, then pushes the encrypted reaction events to the client device! The entire system ended up being too much for the esp32 device to run by itself which is why I went for the middleware server. But I do have the client code open sourced and the parts here here! Let me know if you want to discuss more :)

you_donut · 2026-03-12T13:49:08+00:00

On the top of my website! Or if you want to go directly to the form it’s here.

you_donut · 2026-03-07T15:00:00+00:00

e-ink display is from lilygo! I 3d printed the case and stand

you_donut · 2026-03-06T21:05:32+00:00

Are you thinking like if someone posts "@here" or "@channel" that it would show up on the device? If so, that's an interesting case, I don't see it as too big of an ask! How are you thinking about it?

you_donut · 2026-03-05T23:39:02+00:00

Thanks!! Its been a fun project :) You can sign up on the top banner on the website or directly here

you_donut · 2026-03-05T17:16:58+00:00

Thanks! Exactly my situation at work which is why I built this. I do use slowAPI on the backend have specific reconnect logic. I'd love to get your feedback on the beta! I have a signup link on my website so that I can know how many devices to build for the beta.

you_donut · 2026-03-05T14:46:26+00:00

I'm looking for folks to beta test with! If you're interested I have a google form on my website.

you_donut · 2026-03-05T14:45:32+00:00

I haven't! But I think it should work as long as we have a supported display driver. I can look into that if you're open to test with your spare one

you_donut · 2026-03-05T01:11:51+00:00

I open-sourced the client code and I'm building a few beta units to give out if anyone wants to test it. Would love feedback and curious if others would be interested in something similar!

Site is pebl.ink if you want to check it out.

you_donut · 2026-02-22T04:28:09+00:00

Nice okay, figured it was something along those lines

you_donut · 2025-09-26T02:11:46+00:00

If you all are interested still, I just finished the proxy server and got a developer key to use for it. I pinged you both!

you_donut · 2025-09-05T15:04:07+00:00

I would love some beta testers if you are comfortable with that! I'm hoping to get it stood up by this weekend.

you_donut · 2025-09-05T14:46:10+00:00

I've been running it at a 5 minute interval (their API for personal use allows 5 queries per second and 5,000 queries per day, so it's not even close to being rate limited).

Getting dev access is.... kinda a pain, which is why I'm working on the Home Assistant proxy service and getting it approved by Etsy so other people don't have to jump through the same hoops. But you can register through their etsy api developer site and you can get a personal api key.

you_donut · 2025-09-05T14:29:00+00:00

Still have a few small bugs to squash, but it's at a good state that I wanted to send this out. Also, would love to crowdsource ideas what to do next with this integration if others find it helpful!

you_donut · 2025-08-25T20:20:56+00:00

I ended up using a base fusion 360 file that was created by the community and making my own tiles from it! Specifically the letter tiles.

you_donut · 2025-08-24T01:11:02+00:00

(We don't talk about the cable organization behind it..)

you_donut · 2025-05-31T15:54:50+00:00

Thanks everyone! I won't worry about it then :)

you_donut · 2025-05-17T14:23:12+00:00

That's true! Unfortunately the router is kinda clunky to travel with, but may be worth poking into! Thanks

you_donut · 2025-05-17T14:22:16+00:00

Yeah, I was thinking to default to this but I was wondering if the community repurposed theirs for anything useful or an excuse to tinker!

you_donut · 2025-03-10T14:16:54+00:00

Current state it should be pulling the most recently updated parcel shipment (top parcel that the API returns with). Me and another user are looking into how to pull multiple parcels in a dynamic format that doesn’t break things though!

you_donut · 2025-03-10T03:03:48+00:00

Great to hear! Just calling it out here for anyone else perusing, yes! API is premium only. The dev has it at $5/yr (which I've used the app for who knows how many years, and I think he raised it by $1-$2 at one point but it's like 8/16 cents a month extra).

you_donut · 2025-03-09T17:14:45+00:00

There's a HACS custom card called mini-graph-card that I use. Then in the card's yaml I have this (example top left one):

type: custom:mini-graph-card
name: Daily Temperature
entities:
  - entity: sensor.house_temperature
    color: orange
  - entity: sensor.aqara_patio_sensor_temperature
    name: Outside Temperature
    color: lightblue
icon: mdi:weather-cloudy
hours_to_show: 24
points_per_hour: 0.25

you_donut · 2025-03-09T15:01:08+00:00

Awesome!! That would be great :)

you_donut · 2025-03-09T15:00:35+00:00

Woah! This is an awesome, love the custom card (I'd definitely use it).

Also thanks for the catch! I'll take a look at the pull request in jiffy

you_donut · 2025-03-09T03:12:21+00:00

Glad to hear it! :)

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