#First (?) partially updateable 7.5" e paper in ESPhome!

23 messages · Page 1 of 1 (latest)

vernal barn
#

pardon the noise, AC is running xD

fickle delta
#

Are the grid lines just added for visual testing?

vernal barn
#

yes. They were for testing if the coordinate system of the display is behaving like I expected. The documentation for the display is both great and horrible at the same time .D

#

this is now the first Iteration of the partial update, where essentially I find the two defining corner segments around the change in 2d and update the square in between. Theoretically, I should be able to just queue all the segments that need updating into the display individually and then hit update once, I believe the display chip actually supports that

#

First (?) partially updateable 7.5" e paper in ESPhome!

#

and also without the AC noise lol

eternal yacht
#

Do you use partial updates for speed or energy saving?

vernal barn
#

for speed but mainly to not have the entire screen flash when you only want to update a slim information (e.g. for weather, when only the line with the temperatures change but the weather prognosis itself stays the same)

vernal barn
#

also, I took it as a challenge that no big ePaper display had partial updates so far 😄

fickle delta
vernal barn
#

in esphome? are they part of the waveshare_epaper component? Because the only partial updates I found were for small displays

fickle delta
#

Not in waveshare, inkplate has its own component

#

Its completely different though

vernal barn
#

ok. then its the first large scale waveshare_epaper based component with partial updates xD

opaque pilot
#

I imagine it largely depends on the hardware, but I wonder if you could get away with fewer flashes at the expense of some ghosting or artifacts

modest steppe
#

That's crazy!

fickle delta
opaque pilot
#

yeah all of his reviews eventually lead there and it's always painful 🫣

fickle delta
#

Such a waste of good tech