Elecrow 2.4 inch HMI Touch Display 240320 TTL Serial Screen
Elecrow 2.4 inch HMI Touch Display 240320 TTL Serial Screen
The Elecrow 2.4 inch HMI touch display is a compact, high-resolution graphical user interface (GUI) module designed for a wide range of IoT and embedded system applications. This display module features a 2.4-inch TFT LCD screen with a resolution of 240x320 pixels, a resistive touch panel, and a TTL serial interface for communication with microcontrollers or other host devices.
| The Elecrow 2.4 inch HMI touch display is a versatile component that enables users to create interactive and intuitive GUIs for their projects. The module's primary functions include |
Displaying graphics, text, and images on the 2.4-inch TFT LCD screen
Detecting touch input from the resistive touch panel
Communicating with host devices or microcontrollers through the TTL serial interface
Executing commands and displaying feedback based on user input and system status
2.4 inches (diagonal)
240x320 pixels (QVGA)
TFT LCD (Thin-Film Transistor Liquid Crystal Display)
250 cd/m (typical)
60 (left/right), 50 (up/down)
Resistive touch technology
Supports single-touch input
1 mm (typical)
TTL serial interface (RX, TX, VCC, GND)
9600 bps (default), adjustable up to 115200 bps
8-bit data, 1-bit parity, 1-bit stop
5V DC
150 mA (typical), 250 mA (maximum)
65.5 x 47.5 mm
1.6 mm
| 4 x M2.5 holes (pitch | 50 mm) |
-20C to 70C
-30C to 80C
5% to 95% RH (non-condensing)
| The Elecrow 2.4 inch HMI touch display is suitable for a wide range of applications, including |
IoT devices and smart home systems
Industrial control and automation systems
Medical devices and equipment
Wearable devices and mobile accessories
Robotics and autonomous systems
Embedded systems and development boards
| For more information, please refer to the following documents and resources |
Elecrow 2.4 inch HMI Touch Display datasheet
Elecrow 2.4 inch HMI Touch Display user manual
TTL serial communication protocol documentation
Sample code and libraries for popular microcontrollers and development boards
Elecrow 2.4 inch HMI Touch Display 240320 TTL Serial Screen DocumentationOverviewThe Elecrow 2.4 inch HMI touch display is a compact and versatile screen designed for IoT and embedded systems applications. It features a 240x320 pixel resolution, 2.4-inch diagonal size, and a 4-wire resistive touch panel. The display communicates with a host device using a TTL serial interface, making it easy to integrate into a wide range of projects.Technical SpecificationsDisplay Size: 2.4 inches
Resolution: 240x320 pixels
Touch Panel: 4-wire resistive
Interface: TTL serial
Power Supply: 5V
Operating Temperature: -20C to 70C
Storage Temperature: -30C to 80CConnecting the DisplayTo connect the Elecrow 2.4 inch HMI touch display to a host device, you'll need to wire the following pins:VCC: 5V power supply
GND: Ground
TX: TTL serial data transmission
RX: TTL serial data receptionExample Code 1: Basic Display Initialization using ArduinoThis example demonstrates how to initialize the display and print a simple message using an Arduino board.
```c
#include <SoftwareSerial.h>// Define the TX and RX pins for the display
#define DISPLAY_TX 2
#define DISPLAY_RX 3SoftwareSerial displaySerial(DISPLAY_TX, DISPLAY_RX);void setup() {
// Initialize the display serial interface
displaySerial.begin(9600);
// Initialize the display
displaySerial.write(0xFF); // Display reset
displaySerial.write(0x01); // Display clear
displaySerial.write(0x11); // Display on
// Print a message to the display
displaySerial.println("Hello, World!");
}void loop() {
// Do nothing in this example
}
```
Example Code 2: Touch Event Handling using Raspberry Pi (Python)This example demonstrates how to handle touch events using a Raspberry Pi and the Python programming language.
```python
import serial
import time# Open the serial interface to the display
display_serial = serial.Serial('/dev/ttyUSB0', 9600, timeout=1)def handle_touch(x, y):
# Handle touch event logic here
print(f"Touch detected at ({x}, {y})")while True:
# Read touch data from the display
touch_data = display_serial.readline().strip()
if touch_data.startswith(b'TP='):
x, y = map(int, touch_data[3:].split(b','))
handle_touch(x, y)
time.sleep(0.01) # Polling rate
```
Example Code 3: Displaying an Image using ESP32 (C++)This example demonstrates how to display a bitmap image on the screen using an ESP32 board.
```c
#include <WiFi.h>
#include <SPI.h>#define DISPLAY_CS 5 // Chip select pin for the display
#define DISPLAY_CLK 18 // Clock pin for the display
#define DISPLAY_MOSI 23 // MOSI pin for the displaySPIClass display_spi(HSPI);void setup() {
// Initialize the display SPI interface
display_spi.begin(DISPLAY_CLK, DISPLAY_MOSI, DISPLAY_CS, -1);
// Initialize the display
display_spi.transfer(0xFF); // Display reset
display_spi.transfer(0x01); // Display clear
display_spi.transfer(0x11); // Display on
// Load and display the image
uint8_t image[] = { / bitmap image data / };
display_spi.transfer(image, sizeof(image));
}void loop() {
// Do nothing in this example
}
```
These examples demonstrate the basic usage of the Elecrow 2.4 inch HMI touch display. For more advanced applications, you may need to consult the display's datasheet and the documentation for your specific host device.