Using a 2.9 inch E-Paper Display with ARDUINO

[DonManfred]

Basically it sets up a web server on the 8266

thank you for this suggestion. Ordered such a board now ;-)

 

[Daestrum]

I converted some java to B4J for Floyd-Steinberg dithering - it doesn't currently output any data for e-paper, that's the next step, but it does show what the image will look like.

(Ignore the scrappy code - source contains the original java code I converted to B4J)

 

[Marc DANIEL]

There you will find information for professionals that we are not?

 

[Marc DANIEL]

Oddly enough, I used a sketch made for a 2.66-inch screen on my 2.9-inch screen and the image adjusted automatically... (<<< Video)
And what's more, the display was done in the right direction of the module unlike the previous sketch which only displayed text, but upside down...

So, I found the line to modify to rotate the display in the right direction of the device

Display.setRotation >>> 0 (0°) - 1 (90°) - 2 (180°) - 3 (270°)

 

[Marc DANIEL]

I tried to switch back to B4X as per Klaus and CableGuy's wishes, so I found the font (rAdafruitGFX) that EREL had already put online since January 16, 2017 and then tried to use the rLCDWIKI_SPI library to run my 2.9 inch E-Paper display. My trial and error only resulted in a blink ending in a screen with a mix of mostly red pixels.

So I leave it to the experts to correct the situation!?
See you soon guys ...

#Region Project Attributes
    #AutoFlushLogs: True
    #CheckArrayBounds: True
    #StackBufferSize: 300
#End Region

'pin usage As follow:

' GND > GND
' VCC X 5V or 3,5V
' SDI = SDA = MOSI > D51 (MEGA2560) or > D11 (UNO)   
' SCK = SCLK = SPI SCK = SCL > D52 (MEGA2560) or > D13 (UNO)
' CS > D10
' DC = D/C > D9
' RST = RESET > D8
' BUSY = OCCUPÉ > D7

Sub Process_Globals
    Public Serial1 As Serial
    Public EPaper As LCDWIKI_SPI
    Public Font As AdafruitGFX
    Public H, W As Int
    Private model As UInt = 2560
    Private CS As Byte =   10
    Private CD As Byte =   9
    Private  RST  As Byte = 8     
    Private  LED As Byte =  -1   
End Sub

Private Sub AppStart
    Serial1.Initialize(115200)
    EPaper.Initialize1(model, CS, CD, RST, LED)
    EPaper.Init_LCD
    Log("Let's go !")
    AddLooper("Affichage")   
End Sub

Sub Affichage
    EPaper.Fill_Screen(EPaper.WHITE)
    EPaper.Get_Display_Height
    EPaper.Get_Display_Width
    EPaper.Fill_Rect(0, 0, EPaper.Get_Display_Width, EPaper.Get_Display_Height, 10)
    Font.ConfigureText(2,9,False)
    EPaper.Set_Text_Mode(True)
    
    'EPaper.Print_String("Welcome to B4X !", 0, 32)
    EPaper.write(" Welcome to B4X !")
    EPaper.Set_Rotation(3)
    Delay (5000)
    
End Sub

 

[Daestrum]

Could it be you are refreshing too quickly, they recommend refreshing every 180 seconds or more, looks like your loop does it every 5 seconds.

 

[Marc DANIEL]

Could it be you are refreshing too quickly, they recommend refreshing every 180 seconds or more, looks like your loop does it every 5 seconds.

Possible, I continue to experiment. I will come back to the forum when things are better. Thank you for your comment.

But I'm afraid that LCDWIKI SPI library won't work with classic ARDUINO UNO and MEGA2560 boards

 

[Marc DANIEL]

With this ARDUINO sketch you can use several other fonts. To do this, you must modify lines no. 2 and 21

See the list of available fonts below

All these fonts can be found in the Adafruit_GFX library

And I presume that the B4X rAdafruitGFX library put online by EREL on 01/16/2017 allows access to these fonts


These remarks concern the use of an arduino sketch on a 2.9 inch E-Paper screen (Red, black and white).​

 

[Marc DANIEL]

While waiting for the arrival of a library allowing us to use E-Paper E-Ink screens with B4R, I am coming back to B4A and I will try to use the combination described below in this YouTube video clip to connect my 2.9 inch E-paper with a NodeMCU module

B4A + NodeMCU + Arduino IDE | Android app with B4A communication with NodeMCU V3 using WiFi Via UDP

B4A File​

 

[Marc DANIEL]

And I think that we could advantageously replace the NodeMCU module with this card directly connected to the E-Paper screen

See this for more information
​

In fact, this ESP8266 E-Paper Waveshare board is a driver board from the NodeMCU family suitable for managing electronic labels, the same libraries are used and the connection with ARDUINO-IDE is done with the same board: "NodeMCU 1.0 (ESP-12E Module)"

I am waiting to receive this module so I can continue my tests with the E-Paper - E-Ink screens

 

[Marc DANIEL]

Connection pins between an E-Paper screen and the NodeMCU module

Window for selecting images to convert from the Chrome browser (preferably) connected to the ESP8266 module :

​

 

[Marc DANIEL]

Depending on the model of E-Paper E-Ink Screen you have, you may need a connection adapter: "the E-Ink Universal Driver Hat"

 

[Marc DANIEL]

 

[Marc DANIEL]

Hi guys, I received my E-Paper ESP8266 Driver Board today. I have already successfully tested 2 examples provided for a 2.66 inch E-Paper which I directly connected to this new card ...

I unplugged the connector strip located under my 2.66 inch e-label to plug it directly into the ESP8266 E-Paper module

Sketch "epd2in66b-demo"

Sketch "epd2in66-demo"

Loader and demo examples​

 

[Marc DANIEL]

Adaptation of the arduino sketch to write on an electronic label via E-Paper ESP8266 Driver Board, the numbers of 4 pins must be changed

Uploading Arduino Sketch​

 

[Marc DANIEL]

At the moment I cannot correctly install the "Loader.ino" application, an IP number problem (Lines 28 and 29 incorrect).
I continue to fumble. The advice found on the Waveshare video does not correspond to the reality of the files downloaded.

So, I haven't yet been able to perform an image conversion from my Smartphone to the connected E-Paper screen

 

[Daestrum]

This is what I have in my Loader.ino

  IP4_ADDR(&info.ip, 192, 168, 0, 189); // ip address to use on my network
  IP4_ADDR(&info.gw, 192, 168, 0, 0);  // gateway address of my network
  IP4_ADDR(&info.netmask, 255, 255, 255, 0); // netmask

 

[Marc DANIEL]

This is what I have in my Loader.ino

  IP4_ADDR(&info.ip, 192, 168, 0, 189); // ip address to use on my network
  IP4_ADDR(&info.gw, 192, 168, 0, 0);  // gateway address of my network
  IP4_ADDR(&info.netmask, 255, 255, 255, 0); // netmask

Thank you, I will carry out new tests by changing these lines! Sincerely

 

[Marc DANIEL]

No, it doesn't work any better. Sorry and thank you.

 

[Daestrum]

Does your phone not find the device?

The only other lines I changed were for the SSID and Password for my wifi