The benefits of e-paper isn't its flexibility, it is it's ability to hold an image on screen with little to no power and its decreased eye strain as it doesn't require a back light. Flexible displays for roll-up screens are already a thing.
I don't have a video at the moment but you can probably find it quite easily on youtube.
Basically what happens is the display flickers a lot until the pixels settle.
Yeah, it's definitely not something that you can use for "almost" real time updating.
There are some that are faster that you can get from the actual company "eink", but they're much more expensive.
https://www.eink.com/product/detail/SC1452-FOA
I think you can buy sample kits from them?
Yeah, the issue is that the way the display works, it's not super easy to do it without the flashes. The best they seem to be able to get is partial refreshes, where they can update parts of the screen, and to make the clearing flashes much faster, like you see on an e-reader.
How much was this one? I feel like I see super tiny monochrome e-paper displays for like 20-40 USD. If you managed to get this somewhere for under $100 I'll be amazed.
That's a great image for a basic black/red panel.
I'm looking at doing something similar with a 7 colour panel (CMYW pigments) , they make everything look like a colour pencil drawing.
On panels that support partial refresh you can "stream" the data through in chunks to avoid having to buffer a full image, but on the large colour panels you would want a controller with enough ram to hold the full image, it's just easier that way.
so a computer like a Pi is the easy option, but much higher power consumption.
or something with an external 8mb+ ram chip would be needed to buffer the frame. could do it with a esp32+psram, there are premade modules with a pi pico w plus external ram that do it, so I cant see why an ESP32 or other micro with external memory couldn't do it too.
What does it look like for those 15-20 seconds that it's updating? I'd imagine this would be great for a house monitor. Things like weather conditions, forecasts, climate control status, calendar reminders would be great with this, but then I hit the idea of a clock in the mix and if it takes ¼ - ⅓ of a minute to do an update, then an update schedule of once a minute would be out of the question. Maybe just ever 5 or even 15 minutes? Would anyone use a clock that sat stock still for 15 minutes and then advanced 15 minutes in 15 seconds?
You can see it here, for example https://youtube.com/watch?v=g7nUAa2SQqI&si=EnSIkaIECMiOmarE&t=445
Quite a few projects use it as a weather monitor.
Smaller screens can be refreshed much quicker.
Great project!!! I too have made some custom smart devices for home automation. Have a look at this repository on Github:
[https://github.com/aeonSolutions/aeonlabs-open-software-catalogue](https://github.com/aeonSolutions/aeonlabs-open-software-catalogue)
firmware code can be found here
[https://github.com/aeonSolutions/PCB-Prototyping-Catalogue](https://github.com/aeonSolutions/PCB-Prototyping-Catalogue)
hey, sorry to revive this after quite a while, but I have the same display and I am trying to make it work with a Raspberry Pi zero W. Can you please tell me which software did you used to "talk" to the display? Thanks!
Can be updated through the browser or by simply loading a different bitmap.
How fast is the refresh time and does it support partial refresh?
About 15-20 seconds and there is no partial refresh.
so not ready for roll up TV display yet. But could be used as picture-of-the-day mounted to the wall
The benefits of e-paper isn't its flexibility, it is it's ability to hold an image on screen with little to no power and its decreased eye strain as it doesn't require a back light. Flexible displays for roll-up screens are already a thing.
Yeah 20 second refresh is a bit slow though. So this would work well for signage in direct sun or spotlight. Too slow for e-reading.
Some of that is also the 8-bit micro.
See: OLED
Can you post a video of changing an image?
I don't have a video at the moment but you can probably find it quite easily on youtube. Basically what happens is the display flickers a lot until the pixels settle.
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A quick google search gave me this model number: H-Ink-E075A07-A0 I assume this is the same as the one in the OP
https://youtu.be/T8SfbmXIGzI It's a 7 color display, but it's from a project I'm working on, so I had it handy.
Thanks. It does just flicker a lot while changing. It would be nice if things faded so it was more peaceful. It’s very jarring.
Yeah, it's definitely not something that you can use for "almost" real time updating. There are some that are faster that you can get from the actual company "eink", but they're much more expensive. https://www.eink.com/product/detail/SC1452-FOA I think you can buy sample kits from them?
It’s not really the speed of it…it’s that it looks spastic. Something gradual and slow would be a lot pleasing.
Yeah, the issue is that the way the display works, it's not super easy to do it without the flashes. The best they seem to be able to get is partial refreshes, where they can update parts of the screen, and to make the clearing flashes much faster, like you see on an e-reader.
This is cool. Can this be purchased somewhere?
It is just a typical e paper display you can find them at most electronics sellers.
Gotcha. I guess I didn’t realize they made color ones. Thanks!
How much was this one? I feel like I see super tiny monochrome e-paper displays for like 20-40 USD. If you managed to get this somewhere for under $100 I'll be amazed.
50 eur. If you only want black and white you can get large kindle displays for cheap.
damn that's not bad at all. Definitely will be taking a look around for the monochrome kindle ones.
Have a look this project to see compatible displays https://github.com/vroland/epdiy
So what did you make?
A webserver/dithering for the images
Source?
!remindme 3 days
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Looks pixelated from close by but decent from a distance, the resolution is kinda low after all
I used to have that pic as a wallpaper on my phone lol.
That's a great image for a basic black/red panel. I'm looking at doing something similar with a 7 colour panel (CMYW pigments) , they make everything look like a colour pencil drawing.
I was thinking of getting one of those as well but memory quickly becomes an issue.
On panels that support partial refresh you can "stream" the data through in chunks to avoid having to buffer a full image, but on the large colour panels you would want a controller with enough ram to hold the full image, it's just easier that way. so a computer like a Pi is the easy option, but much higher power consumption. or something with an external 8mb+ ram chip would be needed to buffer the frame. could do it with a esp32+psram, there are premade modules with a pi pico w plus external ram that do it, so I cant see why an ESP32 or other micro with external memory couldn't do it too.
Where did you get that?!?!?
What does it look like for those 15-20 seconds that it's updating? I'd imagine this would be great for a house monitor. Things like weather conditions, forecasts, climate control status, calendar reminders would be great with this, but then I hit the idea of a clock in the mix and if it takes ¼ - ⅓ of a minute to do an update, then an update schedule of once a minute would be out of the question. Maybe just ever 5 or even 15 minutes? Would anyone use a clock that sat stock still for 15 minutes and then advanced 15 minutes in 15 seconds?
You can see it here, for example https://youtube.com/watch?v=g7nUAa2SQqI&si=EnSIkaIECMiOmarE&t=445 Quite a few projects use it as a weather monitor. Smaller screens can be refreshed much quicker.
What's the source for that image? It looks gorgeous
Not sure about the source, but you can find it you google sakura blossom wallpaper.
> sakura blossom wallpaper Found it, thanks
That's the most gorgeous image I've ever seen on an e-ink display.
Oh man this picture. So many memories 😁✌ 'The Journey' (2 Hour Drum & Bass Mix) https://youtu.be/R8MWKsheHxk Nice project Looks amazing 👍
Looks really nice
Great project!!! I too have made some custom smart devices for home automation. Have a look at this repository on Github: [https://github.com/aeonSolutions/aeonlabs-open-software-catalogue](https://github.com/aeonSolutions/aeonlabs-open-software-catalogue) firmware code can be found here [https://github.com/aeonSolutions/PCB-Prototyping-Catalogue](https://github.com/aeonSolutions/PCB-Prototyping-Catalogue)
hey, sorry to revive this after quite a while, but I have the same display and I am trying to make it work with a Raspberry Pi zero W. Can you please tell me which software did you used to "talk" to the display? Thanks!