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ESPHome Feature Request Tracker
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Waveshare - Partial update support for 4.2 #933

Open Wolbyworld opened 3 years ago

Wolbyworld commented 3 years ago

Describe the problem you have/What new integration you would like

The 4.2inches waveshare screen don´t currently support the partial update feature (implemented using full_update_every for the 1.54in, 2.13in) however the hardware allow to do it. An Arduino user using a ESP32 is able to do it, and shows how in this video

Please describe your use case for this integration and alternatives you've tried:

I am currently using the full update with 1min change. The problem is that it looks terrible and don´t allow higher refresh frequency.

I could code the .ino sketch and upload it, but then the integration with the other sensor would be significantly more painfull.

Additional context

anekinloewe commented 3 years ago

I thing this guy explain really good how partial update for the 4.2" display works: https://benkrasnow.blogspot.com/2017/10/fast-partial-refresh-on-42-e-paper.html He share example code, too. Unfortunately my c++ is too bad to implement it myself.

JonathanTreffler commented 3 years ago

This would be great feature. But it is a duplicate of #250 and that didn't lead anywhere.

DerWe commented 3 years ago

I recently build a Display with a 4.2 in Waveshare Panel as well. Standing on a bookshelve, partial Update would be a nice feature to let the refresh be less annoying.

Warter21 commented 3 years ago

yes, it would be a pretty nice feature.

mbo18 commented 2 years ago

I tried to understand how it works to add this to ESPHome but failed as I’m not a dev… still no one to work on this?

Buuuh commented 2 years ago

Also still waiting for this.

At least i found a custom solution for the 2.7" display. A bigger one would be nice, but only full update is a no go (and also not required) for my usecase, because the flickering is anoying.

I don't get why it is not implemented...

No partial update, no buy.

atoomkern commented 2 years ago

Also still waiting for this.

At least i found a custom solution for the 2.7" display. A bigger one would be nice, but only full update is a no go (and also not required) for my usecase, because the flickering is anoying.

I don't get why it is not implemented...

No partial update, no buy.

Can you share your custom solution for the 2.7" display? I have the 2.7" display but can't get it to partial update

Buuuh commented 2 years ago

Can you share your custom solution for the 2.7" display? I have the 2.7" display but can't get it to partial update

https://github.com/elad661/rpi_epd2in7

malkie-hass commented 7 months ago

I would love to see this feature. WIth the full refresh this is taking to long. I have the waveshare 4.2 to show some temperatures from my meater bbq thermometer. And somehow this was not what I expected how it works :(