1. Introduction
The Keyestudio 3.2 inch ESP32-W-ROOM-32E TFT Screen is a versatile display module designed for embedded development, particularly with Arduino and ESP32 platforms. It features a 3.2-inch IPS LCD with a resolution of 240x320 pixels, offering a full viewing angle for high-fidelity images. The module integrates an ESP32-WROOM-32E chip and rich peripherals, making it suitable for various projects requiring a graphical user interface.
This manual provides essential information for setting up, operating, and maintaining your ESP32-W-ROOM-32E TFT Screen.
2. Package Contents
Please verify that all items are present in your package. The contents may vary slightly depending on whether you selected the 'With Touch' or 'NO Touch' option.
- 3.2 inch ESP32-32E Display Module (With or Without Touch functionality)
- DuPont Wire (for connections)
- Type-C USB Cable (for power and data)
- Transparent Storage Box
- Stylus (included with 'With Touch' option)
3. Specifications
The following table details the technical specifications of the ESP32-W-ROOM-32E TFT Screen module.
| Category | Parameter | Value |
|---|---|---|
| ESP32 Module | Module | ESP32-32E |
| CPU | ESP32-D0WD-V3, Xtensa dual-core 32-bit LX6 microprocessor | |
| Frequency | 240MHz (Max) | |
| Memory | 48KB ROM + 520KB SRAM + 16KB RTC SRAM + 4MB external QSPI Flash | |
| WiFi | 2.4GHz and 802.11b/g/n modes | |
| Bluetooth | Bluetooth V4.2BR/EDR and Bluetooth LE standards | |
| LCD Parameters | Panel Size | 3.2 inch |
| Panel Type | IPS TFT | |
| Resolution | 240RGBx320 (pixels) | |
| Active Area | 48.60(W)x64.80(H)mm | |
| Max. Number of Colors | 262K (RGB666) / Common: 65K (RGB565) | |
| Driver | ST7789P3 | |
| Display Interface | 4-Line SPI (Connect to ESP32) | |
| Backlight Type | White LED*6 | |
| Operating Conditions | Operating Voltage | 3.0-3.6V |
| Operating Temperature | -10 to 50°C | |
| Power Consumption | Working Voltage | 5.0V |
| Backlight Current | 106mA (ESP32 reset: 40) | |
| Total Current | Display only: 160mA; Display, speaker, battery charging all work: 510mA | |
| Battery Charging | Charging Voltage | Typical value: 5V, Max: 500mA |
| Charging Saturation Voltage | Module Actual value: 290mA | |
| Rechargeable Battery Specifications | 3.7V polymer lithium battery | |
| Physical | Dimensions (L*W*H) | 55.0 ± 0.2 (W) x 77.70 ± 0.2 (H) x 2.4 ± 0.1 (D) mm (Excluding cases and adhesive backing) |
| Outline Size (No Touch) | 55.0 (W) x 77.70 (H) x 4.50 (D) mm |
4. Features
- IPS Full View Panel: Enjoy high-fidelity images from various viewing angles without color distortion.
- High-Integrated Design: Combines an ESP32 chip, TFT screen, and numerous peripherals on a single board for compact and efficient development.
- Rich Interfaces: Includes Type-C, SPI, I2C, Battery, MicroSD Card Slot, Speaker, Serial Port, and Extended Input interfaces for broad connectivity.
- LVGL GUI Development Support: Compatible with LVGL, a popular open-source embedded graphics library, for creating aesthetic and lightweight user interfaces.
- Multiple Development Environments: Supports Arduino IDE, Micro Python, Scratch 3.0, ESP-IDF, and PlatformIO, offering flexibility for different programming preferences.
5. Setup and Connection
This section guides you through the physical setup and connection of your ESP32-W-ROOM-32E TFT Screen module.
5.1 Interface Overview
The module features several interfaces for power, data, and expansion:
- Type-C Interface: For power supply and data communication with a computer.
- RESET Key: Resets the ESP32 module.
- BOOT Key: Used for entering bootloader mode for firmware flashing.
- Extended Input Interface: General purpose input/output pins.
- Speaker Interface: For audio output.
- SPI Peripheral Interface: Main communication interface for the TFT display.
- I2C Peripheral Interface: For connecting I2C sensors and peripherals.
- Battery Interface: For connecting a 3.7V polymer lithium battery.
- Serial Port: UART interface for serial communication.
- RGB LED: Status indicator.
- MicroSD Card Slot: For external storage.
5.2 Initial Connection
- Power Supply: Connect the module to your computer using the provided Type-C USB cable. This will power the module and allow for data communication.
- Development Environment: Install your preferred development environment (e.g., Arduino IDE) and the necessary ESP32 board support packages and libraries.
- First Program: Upload a simple test program (e.g., a 'Hello World' example for the display) to verify basic functionality.
6. Operating Instructions
The ESP32-W-ROOM-32E TFT Screen supports various programming environments, allowing for flexible development of applications.
6.1 Supported Development Environments
You can program the module using:
- Arduino IDE: A popular and easy-to-use environment with extensive libraries for ESP32.
- Micro Python: For Python enthusiasts, offering a simplified programming experience.
- Scratch 3.0: A visual programming language, ideal for beginners and educational purposes.
- ESP-IDF: Espressif IoT Development Framework, for advanced users requiring more control and performance.
- PlatformIO: A professional embedded development ecosystem.
6.2 GUI Development with LVGL
For creating rich graphical user interfaces, the module supports LVGL (Light and Versatile Graphics Library). LVGL is an open-source embedded graphics library that simplifies the creation of aesthetic and functional GUIs.
- Utilize tools like SquareLine Studio and Arduino IDE to develop your GUI.
- The 'What You See Is What You Get' (WYSIWYG) approach helps in designing interfaces efficiently.
7. Maintenance
To ensure the longevity and optimal performance of your ESP32-W-ROOM-32E TFT Screen, follow these maintenance guidelines:
- Handle with Care: Avoid dropping or subjecting the module to strong impacts.
- Keep Clean: Use a soft, dry cloth to gently clean the screen and board. Avoid abrasive materials or harsh chemicals.
- Storage: When not in use, store the module in its transparent box in a cool, dry place away from direct sunlight and extreme temperatures.
- Power Supply: Always use a stable 5V power supply via the Type-C port or a compatible 3.7V lithium battery.
- Static Electricity: Take precautions against electrostatic discharge (ESD) when handling the module, especially the exposed electronic components.
8. Troubleshooting
If you encounter issues with your ESP32-W-ROOM-32E TFT Screen, consider the following common troubleshooting steps:
- Display Not Lighting Up:
- Ensure the Type-C cable is securely connected and providing power.
- Verify that the correct drivers and board definitions are installed in your IDE.
- Check your code for any initialization errors or incorrect pin assignments for the SPI interface.
- Garbled Display/Incorrect Colors:
- Confirm that the display driver (ST7789P3) is correctly configured in your software.
- Ensure the SPI communication speed is appropriate and stable.
- Check for loose connections in the DuPont wires.
- Module Not Responding/Uploading Issues:
- Press the RESET button.
- Ensure the correct COM port is selected in your IDE.
- Try holding the BOOT button while pressing and releasing RESET, then release BOOT to enter flashing mode.
- Verify your USB cable is a data cable, not just a charging cable.
- Touch Screen Not Working (if applicable):
- Ensure the XPT2046 touch controller library is correctly installed and initialized in your code.
- Check the connections for the touch interface.
9. User Tips
Here are some general tips to enhance your experience with the ESP32-W-ROOM-32E TFT Screen:
- Community Support: For specific programming questions or advanced projects, refer to the extensive online communities for ESP32 and Arduino. Many forums and tutorials are available.
- Start Simple: Begin with basic examples provided by the ESP32 or display libraries to understand fundamental operations before moving to complex projects.
- Power Management: When using battery power, be mindful of the module's current consumption, especially with the backlight and speaker active, to optimize battery life.
10. Warranty and Support
This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. For technical support, documentation, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
