SPI Electronic Ink / Electronic Paper Display

This is the E-Ink / Paper display device integrated by the image display technology of Microencapsulated Electrophoretic Display (MED). This device has an approach to create a tiny spheres in which the charge color pigments are suspending the transparent electrode layer that moves depending on the electronic charge. The screen display patterns by reflecting the ambient light and no background light needed it is more clearer under the sunlight. This device is ideal choice application such as shelf label, industrial instruments, home and appliances, automotive, mobile devices such as E-Paper, E-Book, E-Reader and Smart Watch. The data communication of this device is using 3 wire, 4 wire SPI Serial Peripheral Interface that runs on 3.3v and generates 4 color, black, white, grey, and red.

Required Components

Arduino Microcontroller, NodeMCU, Teensy Board, TeensyDuino, ESP8266 12, 12E, ESP8266 NodeMCU, ESPDuino, ATMEGA328 16/12, ATMEGA32u4 16/8/ MHz, ESP8266, ATMEGA250 16 MHz, ATSAM3x8E, ATSAM21D, Raspberry Pi, STM32 (Note: The Diagram below is using NANO. (please refer to the respective pin-outs)
E-Ink / E-Paper 1.5 Inch A, 1.5 Inch B, 2.13 Inch A, 2.13 Inch B, 2.9 Inch A, 2.9 Inch B, 4.2 Inch A, 4.2 Inch B, 7.5 Inch A, 7.5 Inch B.
- 2.7 inch A and 2.7 B is for Raspberry Hat.
Jumper Wires / DuPont Wires
Solder Less Bread Board (Optional)

Wiring Guide

For bitmap c array generator and step by step guide how to use the software please refer to this link.

Source Code

This a test code for 1.54 inch & 2.9 Inch E-Ink / E-Paper display panel.

#include <SPI.h>
#include <epd1in54.h>
#include <epdpaint.h>
#include "imagedata.h" // Image Data 

#define COLORED     0
#define UNCOLORED   1


unsigned char image[1024];
Paint paint(image, 0, 0);    // width should be the multiple of 8 
Epd epd;
unsigned long time_start_ms;
unsigned long time_now_s;

void setup() {
  Serial.begin(9600);
  if (epd.Init(lut_full_update) != 0) {
      Serial.print("14CORE | E-Paper Initialization Failed ");
      delay(1000);
      Serial.print("Check wiring ..........................")
      return;
  }

  /** 
   *  there are 2 memory areas embedded in the e-paper display
   *  and once the display is refreshed, the memory area will be auto-toggled,
   *  i.e. the next action of SetFrameMemory will set the other memory area
   *  therefore you have to clear the frame memory twice.
   */

  epd.ClearFrameMemory(0xFF);   // bit set = white, bit reset = black
  epd.DisplayFrame();
  epd.ClearFrameMemory(0xFF);   // bit set = white, bit reset = black
  epd.DisplayFrame();

  paint.SetRotate(ROTATE_0);

/* ------- Change this if your using other sizes of EPaper --------*/


  //paint.SetWidth(129); // Uncommetn if your using 2.9 E-Ink Display
  //paint.SetWidth(24);  // Uncommetn if your using 2.9 E-Ink Display

  paint.SetWidth(200); //Comment if your using 2.9 inch
  paint.SetHeight(24); //COmment if your using 2.9 inch


  /* ----- Numerical Coordinates > 2.9 Inch  Un-comment -------- */
// paint.Clear(COLORED);
// paint.DrawStringAt(0, 4, "14CORE | TEST CODE", &Font16, UNCOLORED);
// epd.SetFrameMemory(paint.GetImage(), 0, 10, paint.GetWidth(), paint.GetHeight());
  
//paint.Clear(UNCOLORED);paint.DrawStringAt(0, 4, "EPAPER 2.9 Inch DEMO", &Font16, COLORED);
//epd.SetFr
//ameMemory(paint.GetImage(), 0, 30, paint.GetWidth(), paint.GetHeight());
/* ------------------------------------------------------------- */


/* -------------- Numerical Coordinates > 1.54 Inch ------------ */
  paint.Clear(COLORED);
  paint.DrawStringAt(30, 4, "14CORE | TEST CODE", &Font16, UNCOLORED);
  epd.SetFrameMemory(paint.GetImage(), 0, 10, paint.GetWidth(), paint.GetHeight());

  paint.Clear(UNCOLORED);
  paint.DrawStringAt(30, 4, "EPAPER 1.5 Inch DEMO", &Font16, COLORED);
  epd.SetFrameMemory(paint.GetImage(), 0, 30, paint.GetWidth(), paint.GetHeight());
  /* ---------------------------------------------------------- */

  paint.SetWidth(64);
  paint.SetHeight(64);
  
  paint.Clear(UNCOLORED);
  paint.DrawRectangle(0, 0, 40, 50, COLORED);
  paint.DrawLine(0, 0, 40, 50, COLORED);
  paint.DrawLine(40, 0, 0, 50, COLORED);
  epd.SetFrameMemory(paint.GetImage(), 16, 60, paint.GetWidth(), paint.GetHeight());

  paint.Clear(UNCOLORED);
  paint.DrawCircle(32, 32, 30, COLORED);
  epd.SetFrameMemory(paint.GetImage(), 120, 60, paint.GetWidth(), paint.GetHeight());

  paint.Clear(UNCOLORED);
  paint.DrawFilledRectangle(0, 0, 40, 50, COLORED);
  epd.SetFrameMemory(paint.GetImage(), 16, 130, paint.GetWidth(), paint.GetHeight());

  paint.Clear(UNCOLORED);
  paint.DrawFilledCircle(32, 32, 30, COLORED);
  epd.SetFrameMemory(paint.GetImage(), 120, 130, paint.GetWidth(), paint.GetHeight());
  epd.DisplayFrame();

  delay(2000);

  if (epd.Init(lut_partial_update) != 0) {
      Serial.print("e-Paper init failed");
      return;
  }

  /** 
   *  there are 2 memory areas embedded in the e-paper display and once the display is refreshed, the memory area will be auto-toggled, 
   i.e. the next action of SetFrameMemory will set the other memory area  therefore you have to set the frame memory and refresh the 
   display twice.
   */

  epd.SetFrameMemory(IMAGE_DATA);
  epd.DisplayFrame();
  epd.SetFrameMemory(IMAGE_DATA);
  epd.DisplayFrame();

  time_start_ms = millis();
}

void loop() {
  
  // put your main code here, to run repeatedly:
  time_now_s = (millis() - time_start_ms) / 1000;
  char time_string[] = {'0', '0', ':', '0', '0', '\0'};
  time_string[0] = time_now_s / 60 / 10 + '0';
  time_string[1] = time_now_s / 60 % 10 + '0';
  time_string[3] = time_now_s % 60 / 10 + '0';
  time_string[4] = time_now_s % 60 % 10 + '0';

  paint.SetWidth(32);
  paint.SetHeight(96);

  paint.SetRotate(ROTATE_270); 

  paint.Clear(UNCOLORED);
  paint.DrawStringAt(0, 4, time_string, &Font24, COLORED);
  epd.SetFrameMemory(paint.GetImage(), 80, 72, paint.GetWidth(), paint.GetHeight());
  epd.DisplayFrame();

  delay(500);
}

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#include <SPI.h>

#include <epd1in54.h>

#include <epdpaint.h>

#include "imagedata.h" // Image Data

#define COLORED 0

#define UNCOLORED 1

unsigned char image[1024];

Paint paint(image, 0, 0); // width should be the multiple of 8

Epd epd;

unsigned long time_start_ms;

unsigned long time_now_s;

void setup() {

Serial.begin(9600);

if (epd.Init(lut_full_update) != 0) {

Serial.print("14CORE | E-Paper Initialization Failed ");

delay(1000);

Serial.print("Check wiring ..........................")

return;

}

/**

* there are 2 memory areas embedded in the e-paper display

* and once the display is refreshed, the memory area will be auto-toggled,

* i.e. the next action of SetFrameMemory will set the other memory area

* therefore you have to clear the frame memory twice.

epd.ClearFrameMemory(0xFF); // bit set = white, bit reset = black

epd.DisplayFrame();

epd.ClearFrameMemory(0xFF); // bit set = white, bit reset = black

epd.DisplayFrame();

paint.SetRotate(ROTATE_0);

/* ------- Change this if your using other sizes of EPaper --------*/

//paint.SetWidth(129); // Uncommetn if your using 2.9 E-Ink Display

//paint.SetWidth(24); // Uncommetn if your using 2.9 E-Ink Display

paint.SetWidth(200); //Comment if your using 2.9 inch

paint.SetHeight(24); //COmment if your using 2.9 inch

/* ----- Numerical Coordinates > 2.9 Inch Un-comment -------- */

// paint.Clear(COLORED);

// paint.DrawStringAt(0, 4, "14CORE | TEST CODE", &Font16, UNCOLORED);

// epd.SetFrameMemory(paint.GetImage(), 0, 10, paint.GetWidth(), paint.GetHeight());

//paint.Clear(UNCOLORED);paint.DrawStringAt(0, 4, "EPAPER 2.9 Inch DEMO", &Font16, COLORED);

//epd.SetFr

//ameMemory(paint.GetImage(), 0, 30, paint.GetWidth(), paint.GetHeight());

/* ------------------------------------------------------------- */

/* -------------- Numerical Coordinates > 1.54 Inch ------------ */

paint.Clear(COLORED);

paint.DrawStringAt(30, 4, "14CORE | TEST CODE", &Font16, UNCOLORED);

epd.SetFrameMemory(paint.GetImage(), 0, 10, paint.GetWidth(), paint.GetHeight());

paint.Clear(UNCOLORED);

paint.DrawStringAt(30, 4, "EPAPER 1.5 Inch DEMO", &Font16, COLORED);

epd.SetFrameMemory(paint.GetImage(), 0, 30, paint.GetWidth(), paint.GetHeight());

/* ---------------------------------------------------------- */

paint.SetWidth(64);

paint.SetHeight(64);

paint.Clear(UNCOLORED);

paint.DrawRectangle(0, 0, 40, 50, COLORED);

paint.DrawLine(0, 0, 40, 50, COLORED);

paint.DrawLine(40, 0, 0, 50, COLORED);

epd.SetFrameMemory(paint.GetImage(), 16, 60, paint.GetWidth(), paint.GetHeight());

paint.Clear(UNCOLORED);

paint.DrawCircle(32, 32, 30, COLORED);

epd.SetFrameMemory(paint.GetImage(), 120, 60, paint.GetWidth(), paint.GetHeight());

paint.Clear(UNCOLORED);

paint.DrawFilledRectangle(0, 0, 40, 50, COLORED);

epd.SetFrameMemory(paint.GetImage(), 16, 130, paint.GetWidth(), paint.GetHeight());

paint.Clear(UNCOLORED);

paint.DrawFilledCircle(32, 32, 30, COLORED);

epd.SetFrameMemory(paint.GetImage(), 120, 130, paint.GetWidth(), paint.GetHeight());

epd.DisplayFrame();

delay(2000);

if (epd.Init(lut_partial_update) != 0) {

Serial.print("e-Paper init failed");

return;

}

/**

* there are 2 memory areas embedded in the e-paper display and once the display is refreshed, the memory area will be auto-toggled,

i.e. the next action of SetFrameMemory will set the other memory area therefore you have to set the frame memory and refresh the

display twice.

epd.SetFrameMemory(IMAGE_DATA);

epd.DisplayFrame();

epd.SetFrameMemory(IMAGE_DATA);

epd.DisplayFrame();

time_start_ms = millis();

}

void loop() {

// put your main code here, to run repeatedly:

time_now_s = (millis() - time_start_ms) / 1000;

char time_string[] = {'0', '0', ':', '0', '0', '\0'};

time_string[0] = time_now_s / 60 / 10 + '0';

time_string[1] = time_now_s / 60 % 10 + '0';

time_string[3] = time_now_s % 60 / 10 + '0';

time_string[4] = time_now_s % 60 % 10 + '0';

paint.SetWidth(32);

paint.SetHeight(96);

paint.SetRotate(ROTATE_270);

paint.Clear(UNCOLORED);

paint.DrawStringAt(0, 4, time_string, &Font24, COLORED);

epd.SetFrameMemory(paint.GetImage(), 80, 72, paint.GetWidth(), paint.GetHeight());

epd.DisplayFrame();

delay(500);

}

E-Ink / E-Paper Sample Codes & Libraries

1.5 Inch Model A | 1.5 Inch Model B | 2.9 Inch Model A | 2.9 Inch Model B

4.2 Inch Model A | 4.2 Inch Model B | 7.5 Inch Model A | 7.5 Inch Model B

Downlaod Image2LCD | Here

Downloads

1.5 Inch Datasheet | Model A | Model B
1.5 Inch Schematics | Model A | Model B
2.9 Inch Datasheet | Model A | Model B
2.9 Inch Schematics | Model A | Model B
4.2 Inch Datasheet | Model A | Model B
4.2 Inch Schematics | Model A | Model B
7.5 Inch Datasheet | Model A | Model B
7.5 Inch Schematics | Model A | Model B

Wiring the SPI Electronic Ink / Electronic Paper Display Panel

Wiring the SPI Electronic Ink / Electronic Paper Display Panel

Required Components

Wiring Guide

Source Code

E-Ink / E-Paper Sample Codes & Libraries

Downloads

One thought on “Wiring the SPI Electronic Ink / Electronic Paper Display Panel”

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Required Components

Wiring Guide

Source Code

E-Ink / E-Paper Sample Codes & Libraries

Downloads

Related Article:

One thought on “Wiring the SPI Electronic Ink / Electronic Paper Display Panel”

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