Example Code for Arduino-Paint

Hardware Preparation

• ESP32 x1
• FireBeetle Covers-ePaper Black&White&Red Display Module x1

Software Preparation

1. Download and install Arduino IDE.
2. Install the DFRobot_Display library from GitHub.
3. Install the DFRobot_ePaper library from GitHub.

Wiring Diagram

Other Preparation Work

1. Set the dial switch on the module to select D3 (ink screen CS) and D6 (font chip CS).
2. Plug the module into the ESP32 main control board.

Sample Code

#include "Arduino.h"
#include "DFRobot_IL0376F_SPI.h"
DFRobot_IL0376F_SPI eink;

#define EINK_CS  D3
#define Font_CS  D6
#define EINK_DC  D8
#define BUSY     D7

void setup(void)
{
    Serial.begin(115200);
    //Select the corresponding pins
    eink.begin(EINK_CS, Font_CS, EINK_DC, BUSY);

    //Clear the screen and display white-
    eink.fillScreen(WHITE);
    //Displays a string, red font
    eink.disString(12,12,1,"DFRobot EINK 1234567890,!@#$%^&*()-+=",RED);
    //Refresh screen display
    eink.flush();
    delay(3000);

    //Displays a string, red font
    eink.disString(12,48,1,"DFRobotThree-color electronic ink screen test program",BLACK);
    //Refresh screen display
    eink.flush();
}

void loop(void)
{
    delay(8000);
}

Result

The screen will display:

1. A red string "DFRobot EINK 1234567890,!@#$%^&*()-+=" at (12,12).
2. A black string "DFRobotThree-color electronic ink screen test program" at (12,48).
3. Basic shapes (points, lines, rectangles, circles) as defined by the code.

Additional Information

• The screen will refresh once every 8 seconds in the loop, but this can be adjusted by modifying the delay time.
• Ensure the BUSY pin is correctly connected to avoid refresh errors.