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Topic: Good Dispay ePaper for Arduino (Read 53262 times) previous topic - next topic

ZinggJM

#195
Oct 19, 2018, 09:36 am Last Edit: Oct 19, 2018, 09:37 am by ZinggJM
@fraber,

GxEPD actually doesn't work with Nucleo-64 STM32L476RG 64 PINS.

GxEPD2 does work with Nucleo-64 STM32L476RG 64 PINS, if template instance creation for this board is added to the example.

I just added this unconditionally for test after the conditional pieces:

Code: [Select]
GxEPD2_BW<GxEPD2_420, GxEPD2_420::HEIGHT> display(GxEPD2_420(/*CS=10*/ SS, /*DC=*/ 8, /*RST=*/ 9, /*BUSY=*/ 7));


I compiled with:

Board: "Nucleo-64"
Board part number: "Nucleo L476RG"
...
Upload method: "Mass Storage"

Same pins as for Arduino UNO, I used the proto board I had made for UNO (with series resistors for UNO).

Jean-Marc

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fraber

#196
Oct 19, 2018, 10:48 am Last Edit: Oct 19, 2018, 10:52 am by fraber
Thanks ZinggJM !

It worksss !!Thanks !!

ZinggJM

Thanks for the feedback! I can live with exclamation points in lieu of Karma points.  :)
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ZinggJM

#199
Oct 31, 2018, 03:42 pm Last Edit: Oct 31, 2018, 03:57 pm by ZinggJM
GDEW1248T3 a 12.48 inch large e-ink display with SPI.

http://www.e-paper-display.com/products_detail/productId=414.html

http://www.buy-lcd.com/index.php?route=product/product&product_id=58944

http://www.buy-lcd.com/index.php?route=product/product&product_id=58971

I had a first look at the specification and the demo code.
The controller seems to support partial window addressing and most likely partial update.
"fast partial update" would require a special waveform table, seems not supported.

The price is high for the usual Arduino user, so I see no use to add support to GxEPD or GxEPD2, but who knows if there would be a sponsor or donator.
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Bjack795

GDEW1248T3 a 12.48 inch large e-ink display with SPI.

http://www.e-paper-display.com/products_detail/productId=414.html

http://www.buy-lcd.com/index.php?route=product/product&product_id=58944

http://www.buy-lcd.com/index.php?route=product/product&product_id=58971

I had a first look at the specification and the demo code.
The controller seems to support partial window addressing and most likely partial update.
"fast partial update" would require a special waveform table, seems not supported.

The price is high for the usual Arduino user, so I see no use to add support to GxEPD or GxEPD2, but who knows if there would be a sponsor or donator.

Hi ZinggJM!

I can't find the full refresh rate info in the specs.

Do you think that the waveform tables can be modified? (not a closed driver board as the Waveshare 7.5")

Anyways now I can't spend these money but if you still will need a sponsor when I'll have some money to spend I will do it with pleasure.


ZinggJM

Hi Bjack795,

there might be a chance to modify the wavetables, although they are not documented.

I got these answers from Good Display:

Quote
As for 12.48 inch e paper display,Sorry we can't  provide you.
Because our customer open this model, it belong them. so I can't provide you controller documents,
Quote
For 12.48" e-paper, now couldn't support partial refresh.
This e-paper looks interesting, and I would be tempted to buy it with the demo board. I could afford it.
But after the "big company" answer from Good Display about sponsoring the small e-papers to support for Arduino users, I currently have no interest to buy from Good Display.

If your enquiry for interest in big e-papers is successful, there might be other donators willing to step in.
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Bjack795

Because our customer open this model, it belong them. so I can't provide you controller documents,

I didn't get their answer, they said that only a customer can have those documents or nobody can?


Quote
But after the "big company" answer from Good Display about sponsoring the small e-papers to support for Arduino users, I currently have no interest to buy from Good Display.
Also this is not clear, they're sponsoring you the small epapers?

Quote
If your enquiry for interest in big e-papers is successful, there might be other donators willing to step in.
We will see, I'm just curious to know the real need of those screens, out of the "shelf labels" and the "giant advertisement" world of E-ink.

ZinggJM

#203
Oct 31, 2018, 07:00 pm Last Edit: Oct 31, 2018, 07:04 pm by ZinggJM
See this post for your second question.

The rights to the documents seem to belong to the original customer. They didn't event want to tell me the name or model of the controller used. But the commands look familiar or similar to the partial update capable controllers.
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Bjack795

#204
Oct 31, 2018, 08:20 pm Last Edit: Oct 31, 2018, 08:20 pm by Bjack795
See this post for your second question.
What it is pointed in this linked post is also the aim of mine (not very followed) question on large screens.

The community must be united in these things, sometimes I make too many questions but certainly I totally agree with you that a screen must be supported by the library before buying it (development purposes excluded, like you sponsors etc) and they should understand that, without full support, nobody is interested in their products.

Quote
The rights to the documents seem to belong to the original customer. They didn't event want to tell me the name or model of the controller used. But the commands look familiar or similar to the partial update capable controllers.
I misunderstood the "customer" word, of course they talked about a customer company, which wants to keep the documents closed.

In my opinion the important thing is the market, if a lot of people are interested in a product (e.g. large or small screens) the developer could have the power to obtain for free a 20€ screen for writing the library.

If they believe that nobody in the community is interested in that product they are not interested on giving away anything.


So the aim is:
1) to understand what people want (both your E-ink displays posts are centred in this way)

2) to make the companies aware of this demand to help the developer in writing the needed environment all around their products.

ZinggJM

I disagree partly, because you don't understand the e-paper display market.

Good Display sells a large amount of e-paper displays to large customers.

The hobbyist market is a small segment added, and it is thanks to some sales persons that these e-paper displays became available to us. And thanks to Waveshare who serve also the hobby market with their development tools and boards.

Unfortunately Good Display does not understand the hobby and Arduino market. You will understand when you see the announced Arduino solution they will provide.
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Bjack795

#206
Oct 31, 2018, 09:45 pm Last Edit: Oct 31, 2018, 09:46 pm by Bjack795
I disagree partly, because you don't understand the e-paper display market.

Good Display sells a large amount of e-paper displays to large customers.

The hobbyist market is a small segment added, and it is thanks to some sales persons that these e-paper displays became available to us. And thanks to Waveshare who serve also the hobby market with their development tools and boards.
I completely understand this, I talked about the shelf labels and wall advertisement markets, or the kindle/kobo one.

Of course the hobbyist are a small part of their mind but my thought was another one.

This is only my opinion but I think that it's not compulsory for them to enter this market, but if you decide to enter it you should take care about the hobbyists' issues.

So I was talking about the fact that some companies (Waveshare is very keen on our world and it's not in the "blacklist" as Good Display) enter our space without changing their behaviour, so they talk to an hobbyist as they would do with amazon.

Quote
You will understand when you see the announced Arduino solution they will provide.
Did I miss some breaking news?

fraber

Hi ZinggJM ,

will you add the GDEW0154Z17 board to the GxEPD2 library.
I'm trying to make it working but was unable to make it works .

I try to change the widht and height to 152 in the library but it don't work

Regards

Francois

ZinggJM

#208
Dec 07, 2018, 05:21 pm Last Edit: Dec 09, 2018, 05:17 pm by ZinggJM
Hi Francois,

Quote
will you add the GDEW0154Z17 board to the GxEPD2 library.
No, I have decided that I add only e-paper displays that I have and can test with.

I had added GDEW0154Z17 to GxEPD, as it has the same controller as the GDEW0213Z16, as an exception.

With this information you have a chance to copy and adapt GxEPD2_213c for your e-paper yourself.
The size is also hardcoded in _InitDisplay()!

Jean-Marc
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flyingbaloon

Hi ,
Are you planning to add support for GDEH029A1 2.9" b/w flexible epaper display from good display ?

http://www.e-paper-display.com/products_detail/productId=411.html

Thanks .

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