Hi,
I have been trying to use display.set_backlight(0.5) and I do not see any
difference in the intensity of the display. I have tried different values, from
0 to 1.0 and I do not see any increase in intensity. I have fresh batteries in the
battery box.
Is there anything else I need to do?
Thank you,
Ed
Do e-ink actually have a backlight?
I do believe they reflect light, not project light.
I’m just looking at this product page, and there is no mention of a backlight. I wonder if it would defeat the purpose of e-ink anyway - it is meant to be run with very minimal power requirements.
I wonder if the library you’re using is generalised so it can set the backlight on displays that have it, but it is a no-op (instead of an error) where that feature is not available.
Doesn’t it, or can’t it display with no power? Once the image is set that is.
I do believe once the image is set, you can just unplug the battery.
To All,
Thanks for the feedback. I was led to believe that one could adjust a backlight because of the wording on learn.pimoroni.com. It points you to:
Check out the PicoGraphics function reference for more info!
Once there you see the display.set_backlight() method. I guess it does not apply to Inky Frame?
Thanks,
Ed
@alphanumeric Exactly right - I haven’t used e-ink yet, but that is my impression of it. I plan to get an e-ink device at some point…
I assume this function would work for the LCD displays - there is quite a list of them in the supported devices list.
@halfer , no e-ink here either. Mostly surmising based on the product page and a bit of web searching.
@virtualeb , I do believe there are a few Pico Graphics options that work on certain display types, but not others.
For me, so far, its mostly LCD displays, and a few LED matrixes. I’m using Pico Graphics on all of them, well all the Pico based ones anyway.
@virtualeb , a lot of this stuff, even for those of us that think we know what we are doing, is a continuous learning experience. ;)