Domoticz with E-ink WIP

[devros]

hi all,
I always wanted to have some nice e-ink with low power consumption and no emited light with domoticz info. So here is my progress so far.
Im using raspberry zero with Waveshare e-ink display and python code. It works quite good so far, only refresh rate is really slow (maybe is because slow SPI on Rasp zero). So dunno if i try to switch to some microcontroler like esp32 or arduino for better SPI data transfer.

How it works so far
- On my domoticz server is running cron with python script that send BMP data over ssh to raspberry connected with e-ink with some refresh&display command.
- Script is written in python - JSON data are recieved from domoticz. Then parse data, use html template with hardcoded size and all is converter from html to BMP (weasyprint module). I know that its quite ugly, but best for templating, imho
- Plan is to hide rasp inside wall and make some border for e-ink later



Script is unfinished and quite ugly and hardcoded (im still python beginner)
Also e-ink should support red color, so i have to check how
If is someone interested i can post script later...

[Seagate]

Nice! Please keep us posted.

[devros]

Nice! Please keep us posted.

Thanks
so some updates...
-rewrited forecast with nice icons and better predictions
-added google calendar import as separate python module (works for days, multiple calendars, with names and stylings)
-prepared laser case - combined two pieces together to make thin border around display (cutted on acrylic on laser)
-added support for 2 colors - red and black in my case (image is exported as green and red and separated with PIL module to two bitmap images)
-prepared wiring opening on wall (raspberry power supply will be hidden on another side of wall so no visible cables)
-little optimized e-ink code for faster refresh (still quite slow)

[nigels0]

Nice!

[devros]

hello, if anyone is still ingterested, im still working on this project
rewrited most of my python code, and used new https://www.waveshare.com/wiki/9.7inch_e-Paper_HAT bigger display with much better refresh rate (no ugly and slow refresh) so i can even add minutes (now i have two minutes refresh). Python script now work standalone as service. Im using html with css for styling and then convert to BMP for eink...
if anyone is interested a can provide code later

[edwin1234]

Nice work!!!

[gropi]

Looks great! Congratulation!

[DeOS]

Looks great! Would you mind sharing the code? I just puchased the 7.5 inch version of the waveshare e-ink screen for the same purpose . I wanted to use this project, but yours seems a bit simpler with less overhead.

https://github.com/BenRoe/rpi-magicmirror-eink

[Faro]

Hi Devros.

I'm very interested for this project as well.
Do you thing you could share it with us please ?

Thank you.

[Chenel]

Hi Devros, very interesting project, it is good solution to reduce power consumption of other solutions using LCD pannels.

Could you please share the code.