Design with 4.2in 400x600 E-Ink Paper Display Module in Cirkit DesignerThe 4.2in 400x600 E-Ink Paper Display Module by Waveshare is a versatile and energy-efficient display solution. E-Ink, or electronic ink, is a type of electronic paper technology that mimics the appearance of ink on paper. This display module is particularly well-suited for applications where readability in various lighting conditions and low power consumption are critical.
This circuit interfaces an Arduino UNO with a 2.9" Greyscale eInk display, allowing the microcontroller to control the display and render images. The Arduino is programmed to initialize the display, draw a checkerboard pattern, and invert the pattern after a delay, demonstrating the eInk display's ability to hold images without continuous updates.
Open Project in Cirkit Designer
This circuit integrates an ESP32-S3 microcontroller with a 2.9" Tri-Color E-Ink display, enabling the microcontroller to control the display for rendering graphics and text. The ESP32-S3 communicates with the display using SPI protocol, allowing for dynamic visual output such as animations and text updates in red, black, and white.
Open Project in Cirkit Designer
This circuit connects an ESP32 microcontroller to a 1.3 inch TFT display module (ST7789). The ESP32 provides power and control signals to the display, enabling it to show graphical data.
Open Project in Cirkit Designer
This is a microcontroller-based interactive device featuring a Wemos D1 Mini, an OLED display, external EEPROM, and an I/O expander. It includes user input buttons and status LEDs, with potential MIDI interface capabilities.
Open Project in Cirkit Designer| Parameter | Value |
|---|---|
| Display Size | 4.2 inches |
| Resolution | 400x600 pixels |
| Display Colors | Black and White |
| Interface | SPI |
| Operating Voltage | 3.3V |
| Power Consumption | Ultra-low power (refresh only) |
| Refresh Time | ~2 seconds |
| Viewing Angle | >170 degrees |
| Operating Temperature | 0°C to 50°C |
| Storage Temperature | -25°C to 70°C |
| Pin No. | Pin Name | Description |
|---|---|---|
| 1 | VCC | Power supply (3.3V) |
| 2 | GND | Ground |
| 3 | DIN | Data input (SPI MOSI) |
| 4 | CLK | Clock input (SPI SCK) |
| 5 | CS | Chip select (SPI CS) |
| 6 | DC | Data/Command control |
| 7 | RST | Reset |
| 8 | BUSY | Busy signal (active low) |
#include <SPI.h>
#include <GxEPD.h>
#include <GxGDEW042T2/GxGDEW042T2.h>
#include <GxIO/GxIO_SPI/GxIO_SPI.h>
#include <GxIO/GxIO.h>
// Pin definitions for the Arduino UNO
#define CS_PIN 10
#define DC_PIN 9
#define RST_PIN 8
#define BUSY_PIN 7
GxIO_Class io(SPI, /*CS=*/ CS_PIN, /*DC=*/ DC_PIN, /*RST=*/ RST_PIN);
GxEPD_Class display(io, /*RST=*/ RST_PIN, /*BUSY=*/ BUSY_PIN);
void setup() {
// Initialize the display
display.init();
// Clear the display
display.fillScreen(GxEPD_WHITE);
display.update();
// Display a message
display.setCursor(0, 0);
display.setTextColor(GxEPD_BLACK);
display.setTextSize(2);
display.print("Hello, E-Ink!");
display.update();
}
void loop() {
// Nothing to do here
}
Display Not Refreshing:
Partial Updates or Ghosting:
Busy Pin Stuck Low:
By following this documentation, users should be able to effectively integrate and utilize the 4.2in 400x600 E-Ink Paper Display Module in their projects.