41–50 of 92 posts
It’s possible to get one of these e-ink display boards with an ESP32 microprocessor for not much more than the display alone. It has onboard WiFi and makes for an even smaller unit since there is no need to attach it to a Pi. It also ditches the operating system so you get an instant boot. Programming is via PlatformIO, MicroPython or Rust (if you’re adventurous! - Rust is not quite ready for ESP32). Has reignited my…
Refresh is horrible on the 7.5in waveshare anyhow.
The article mentions turning off the display to avoid ghosting and links to an article about screen burn in; it was my understanding that e-ink displays do not suffer burn in? I was under the impression that e-ink ghosting is simply due to an incomplete refresh of the display (since this causes a flash and is time consuming)? EDIT: Interestingly the datasheet for the component used does indeed mention this; does anyo…
This will cause the particles within to stay in whatever side of the capsule they were last in, essentially causing a dead “pixel”.
If this happens across as a whole image like a logo or text, it’ll permanently burn in.
This is solved by some flashing between colours, hence why the screens take so long to refresh.
Up for more detailed info myself though!
It’s possible to get one of these e-ink display boards with an ESP32 microprocessor for not much more than the display alone. It has onboard WiFi and makes for an even smaller unit since there is no need to attach it to a Pi. It also ditches the operating system so you get an instant boot. Programming is via PlatformIO, MicroPython or Rust (if you’re adventurous! - Rust is not quite ready for ESP32). Has reignited my…
An alternative might be to jailbreak a Kindle 2 or 3, looks like you just need a computer and a USB cable to do so. https://wiki.mobileread.com/wiki/Python_on_Kindle https://wiki.mobileread.com/wiki/Kindle_Hacks_Information The original OS runs, so what you can do is limited. There are examples of changing the “screensaver” from Python, but I couldn’t see how easy it is to get data into the Kindle (maybe needs USB, w…
Would it work?
The article mentions turning off the display to avoid ghosting and links to an article about screen burn in; it was my understanding that e-ink displays do not suffer burn in? I was under the impression that e-ink ghosting is simply due to an incomplete refresh of the display (since this causes a flash and is time consuming)? EDIT: Interestingly the datasheet for the component used does indeed mention this; does anyo…
An alternative might be to jailbreak a Kindle 2 or 3, looks like you just need a computer and a USB cable to do so. https://wiki.mobileread.com/wiki/Python_on_Kindle https://wiki.mobileread.com/wiki/Kindle_Hacks_Information The original OS runs, so what you can do is limited. There are examples of changing the “screensaver” from Python, but I couldn’t see how easy it is to get data into the Kindle (maybe needs USB, w…
An interesting project someone did with one: https://hackaday.io/project/11537-nekocal-an-e-ink-calendar including pushing the display beyond its original (and currently commercial) limits of 16 levels of grayscale: https://news.ycombinator.com/item?id=16140284
It’s possible to get one of these e-ink display boards with an ESP32 microprocessor for not much more than the display alone. It has onboard WiFi and makes for an even smaller unit since there is no need to attach it to a Pi. It also ditches the operating system so you get an instant boot. Programming is via PlatformIO, MicroPython or Rust (if you’re adventurous! - Rust is not quite ready for ESP32). Has reignited my…
Would it be possible to link to an example of what you mean?
An alternative might be to jailbreak a Kindle 2 or 3, looks like you just need a computer and a USB cable to do so. https://wiki.mobileread.com/wiki/Python_on_Kindle https://wiki.mobileread.com/wiki/Kindle_Hacks_Information The original OS runs, so what you can do is limited. There are examples of changing the “screensaver” from Python, but I couldn’t see how easy it is to get data into the Kindle (maybe needs USB, w…
Though if you aren't a total stranger to C++, a 15x cheaper (4$) e-ink display that is just 50% the size, that can be controlled over SPI, would be nearly just as much effort but much less maintenance. IMHO at least.