BornaBiro
commented
2 years ago Hello claria!
I am very glad to hear that You are enjoying using our product!
Unfortunately, this is the limitation of the e-paper itself and our Inkplate library. Also, on some e-paper panels, it fades much more than on others.
The partial updates on Inkplate work in such a way that there is a comparison between what is on the screen and what needs to be written on it and only sends that difference to the screen (Black pixels to white pixels, or white pixels to black pixels). Because of that, it losses some charge on the parts of the screen that does not need to be changed.
You can try to minimize this effect by keeping the e-paper power supply on (but this will dramatically increase power consumption) by using the function partialUpdate(0, 1); You can keep the e-paper power supply on when you need to do partial updates very frequently, but turn it off when you don't need them (by calling einkOff() or parialUpdate() without parameters).
Hope this helps.
claria
matthewmiddlebrook
Hi,
i try to use partial update (basic example code), where i update parts of the screen and keep the other parts of the screen.
While the latest written text has a bright color, after an partial update at another place, the color of the existing text becomes much lighter. This is most pronounced for the first partial update, further partial update calls only have a much smaller effect.
The picture shows text drawn via partial update while at each iteration, the y offset is increased. So the lowest text is the latest written.
I was expecting that this happens only after multiple partial updates and not with the first one already. Is this expected and is there something i can do to reduce the effect?
Btw, i really like your product!