WaveShare E-Ink Hat ESP32

[elzarmann]

I am using a ESP32 S3 and I have tried 3 different E-inks with the hat. I have my CS to GPIO 10, VCC to 3v3, PWR to 3v3, GND to GND, CLK to GPIO 12, DIN to GPIO 13, DC to GPIO14, RST to GPIO 15, BUSY to GPIO 16. I have been using this code:

#include <GxEPD2_BW.h>

// Define the display

GxEPD2_420 display_driver(/*CS*/ 10, /*DC*/ 14, /*RST*/ 15, /*BUSY*/ 16);
GxEPD2_BW<GxEPD2_420, GxEPD2_420::HEIGHT> display(display_driver);



#define GxEPD2_DRIVER_CLASS GxEPD2_420c_GDEY0420F51 // GDEY0420F51 400x300, HX8717 (no inking)
void setup() {
    Serial.begin(115200);
    Serial.println("Initializing display...");

    SPI.begin(12, -1, 13, 10); // CLK, MISO (not used), MOSI, CS


    // Initialize the display
    display.init(115200, true);
    Serial.println("Display initialized!");

    // Clear the display
    display.fillScreen(GxEPD_WHITE);
    display.display();
    Serial.println("Screen cleared!");

    // Run partial refresh test
    partialRefreshTest();
}

void partialRefreshTest() {
    // Draw text in one region
    display.setPartialWindow(10, 10, 200, 50); // Define a window: x, y, width, height
    display.setTextColor(GxEPD_BLACK);
    display.setCursor(15, 40);
    display.print("Partial Refresh!");
    display.display(true); // Perform partial refresh
    Serial.println("Partial refresh performed!");

    delay(2000);

    // Update another region
    display.setPartialWindow(10, 70, 200, 50);
    display.setCursor(15, 100);
    display.print("Second Update!");
    display.display(true); // Perform another partial refresh
    Serial.println("Second partial refresh performed!");
}

void loop() {
    // No continuous updates
}

Sometimes I get busy timeouts in the serial monitor and sometimes I don't. I have also tried GxEPD and GxEPD2 examples and have never seen even a blink from the displays. I have two different displays I have tried. They are 5.83 inch E-ink and a 4.2 inch E-ink.

[pert]

I moved your topic to a more appropriate forum category @elzarmann .

The Nano ESP32 category you chose is only used for discussions directly related to the Arduino Nano ESP32 board.

In the future, please take the time to pick the forum category that best suits the subject of your question. There is an "About the _____ category" topic at the top of each category that explains its purpose.

Thanks in advance for your cooperation.

[sonofcy]

You need to present a wiring diagram, a photo of a hand drawn diagram is fine.

[silentobserver]

It would help if you provide links to the devices in question, to make your post clearer.

See also: GxEPD2 : Discussions are enabled

[elzarmann]