Design with Adafruit 2.13in Tri-Color eInk Display in Cirkit DesignerThe Adafruit 2.13in Tri-Color eInk Display is an electronic paper display module capable of rendering images and text in three distinct colors: red, black, and white. With a 2.13-inch diagonal size, this display leverages the low-power eInk technology, making it an ideal choice for applications where battery life is critical. Common applications include e-readers, dynamic price tags, wearable devices, and any portable device where a power-efficient, non-backlit display is beneficial.
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 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 uses an Arduino UNO to interface with an Adafruit TCS34725 RGB color sensor, a 128x64 OLED display, and a 16x2 I2C LCD. The Arduino reads color data from the sensor and displays the color information on both the OLED and LCD screens.
Open Project in Cirkit Designer
This circuit features an Arduino Nano microcontroller connected to a ST7735 128x128 1.44 TFT I2C Color display and multiple pushbuttons. The display is interfaced with the Arduino via digital pins for control signals and SPI pins for data transfer. The pushbuttons are connected to various digital and analog input pins on the Arduino, likely intended for user input to control the display or other functions within the code.
Open Project in Cirkit Designer| Pin Number | Name | Description |
|---|---|---|
| 1 | GND | Ground connection |
| 2 | 3V3 | 3.3V power supply input |
| 3 | CLK | SPI clock |
| 4 | MOSI | SPI Master Out Slave In |
| 5 | CS | SPI Chip Select |
| 6 | DC | Data/Command control pin |
| 7 | RST | Reset pin |
| 8 | BUSY | Busy state output pin |
To use the Adafruit 2.13in Tri-Color eInk Display in a circuit:
#include <Adafruit_EPD.h>
#include <Adafruit_GFX.h>
// Pin definitions for the Arduino UNO
#define EPD_CS 10
#define EPD_DC 9
#define EPD_RST 8
#define EPD_BUSY 7
#define SRAM_CS 6
#define EPD_MOSI 11
#define EPD_CLK 13
// Create display instance
Adafruit_IL0373 display(212, 104, EPD_DC, EPD_RST, EPD_CS, SRAM_CS, EPD_MOSI, EPD_CLK, EPD_BUSY);
void setup() {
display.begin(); // Initialize the display
display.clearBuffer(); // Clear the buffer
// Draw a simple message on the screen
display.setCursor(10, 50);
display.setTextColor(EPD_BLACK);
display.print("Hello, eInk!");
// Display the buffer on the screen
display.display();
}
void loop() {
// Nothing to do here
}
Q: Can the display show images in full color? A: No, the display is capable of showing images and text in red, black, and white only.
Q: How do I update the display content?
A: Use the display library's functions to draw on the buffer and then call the display.display() function to update the screen.
Q: Is the display sunlight-readable? A: Yes, eInk displays are known for their excellent sunlight readability.
Q: How long does the image last on the display after power is removed? A: eInk displays are bistable, meaning the image can persist indefinitely without power.