B4J Question Anyone have experience in working with e-ink Displays?

Most likely you will need a "driver" in the form of a library... I am sure that with a little search you will easily find one for the pi.
Connection wise, I wouldn't draw power directly from the pi. The main advantage the e-ink displays is the ability of retaining the image as long as it is powered.

That was an example here on the forum. This one had Android running on it. Pretty sure you could communicate with it via networking from B4J

OliverA said:

Need B4A wrapper for Eink SDK

I am in a need for help converting a java sdk into a lib that I can use with B4A. The java source code I was provided is suppose to provide a way to send images/text to an eink display. An eink display is a display that does not need any power to display an image/text on it. It only requires...

www.b4x.com

That was an example here on the forum. This one had Android running on it. Pretty sure you could communicate with it via networking from B4J

Click to expand...

On that example, the e-ink display is more of a "stand alone" display rather than a display integrated/dedicated(hat?) to the Pi.
As said, if an android b4A code is available, it's quite possible to be not too difficult to convert to B4J...
But it all depends of the display.

OliverA said:

That was an example here on the forum. This one had Android running on it. Pretty sure you could communicate with it via networking from B4J

Click to expand...

B4J or B4A. Both are OK for me ;-)
I´ll check the thread you mentioned. Thanks ;-)

@DonManfred

Hi Manfred,
My two cents on this subject:

Have a look at these:
This is a good supplier: Supplier (note their units are blue tooth enabled and can double as an iBeacon)
This is a good supplier for "raw" screens. Waveshare - Note that they have a Hat for Rpi as well as an NFC enabled unit

Supplier 1 above sells almost "turnkey" solutions that are updated from the cloud via bluetooth gateways and I think I can recall that they did offer me an SDK.

Supplier 2 is more for the "DIY" type engineer who wants to create his/her own system and there is a jar file and Android SDK on their Wiki (Reference Here) - which you will understand much better than me anyway !!

The interesting part is the way that Supplier 2's NFC works, that once you connect with NFC, the display fires up (powers from the NFC), updates the Display and then when you remove the NFC - the display holds the image without further power !!

I trust that my donation to your vast wealth of information will help somewhat !! ?

Enjoy your day !!

Thank you very much for your comment, @BillMeyer ;-)

BillMeyer said:

Supplier 2 is more for the "DIY" type engineer who wants to create his/her own system and there is a jar file and Android SDK on their Wiki (Reference Here) - which you will understand much better than me anyway !!

Click to expand...

the jar is for the nfc version. I would like to use the version powered by a Raspberry Pi or maybe using the ESP32-Chip.


I´m not sure whether it is better to use a Pi or the ESP32.

I have NO experiences in both

But i would prefer to write the app with B4J; i´ll do a wrapper for the jar provided if needed as i am experienced here much more ;-)