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4.0 Inch ESP32 Development Board | WiFi Bluetooth 320*480 TFT Module with Resistive Touch Screen
MTR040S-ESP32-32E
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Product Description
Product Introduction
- Comes with an ESP32-32E module, facilitating development and providing ample development resources.
- 3.95/4.0-inch color screen with a resolution of 320x480, supporting up to 262K colors (RGB666), offering rich color display.
- Abundant interfaces, making it convenient to connect various peripherals (such as I2C, SPI, UART and other peripherals).
- Supports external speakers for audio playback.
- Equipped with an RGB tricolor indicator light, providing diverse status indications.
- Comes with a resistive touch screen, enabling convenient human-computer interaction.
- Standard TYPE-C interface, enabling easy program downloading and power supply.
- Has a micro TF card slot for easy storage expansion.
- Supports external lithium batteries, being lightweight and portable.
- Features a battery charging management circuit to ensure the safe charging and discharging of the battery.
- Provides a wealth of example programs, making it easy to learn.
- Offers underlying driver technical support, and WIKI materials are updated online.
- The module has passed multiple aging tests and can meet military-grade standards, ensuring long-term stable operation.
Product Parameters
ESP32 Main Control Parameters
| Item | Parameters |
| CPU | ESP32-D0WD-V3, Xtensa dual-core 32-bit LX6 microprocessor |
| Main Frequency | 240MHz (maximum) |
| Storage | 448KB ROM + 520KB SRAM + 16KB RTC SRAM + 4MB external QSPI Flash |
| WIFI | 2.4GHz, 802.11b/g/n mode |
| Bluetooth | Bluetooth V4.2 BR/EDR and Bluetooth LE standards |
| Operating Voltage | 3.0~3.6(V) |
| Operating Temperature | –40~85(℃) |
Liquid Crystal Screen Parameters
| Name | Parameters |
| Screen Size | 3.95/4.0 inch |
| Screen Type | TN TFT |
| Resolution | 320xRGBx480(pixels) |
| Effective Display Area | 55.68(W)x83.52(H)(mm) |
| Number of Colors | Maximum: 262K(RGB666) Commonly used: 65K(RGB565) |
| Driver IC | ST7796S |
| Display Interface | 4-Line SPI(connected to ESP32) |
| Pixel Size | 0.174(H)x0.174(mm) |
| Viewing Angle | 12 0’CLOCK |
| Backlight Brightness (Typical Value) | 450cd/m2 |
| Backlight Type | White LED*8 |
| Operating Temperature | -20~60(℃) |
| Storage Temperature | -30~70(℃) |
Interface Definition
Interface Function Description
| Interface | Function Description |
| ESP32-32E Module | The main control of the display module, which controls on-board peripherals and external peripherals. |
| MicroSD Card Slot | Insert a Micro SD card to expand the storage space, for example, to store large data such as font libraries, pictures, and audio files. |
| RGB Tricolor Light | Includes red, green, and blue LED lights, and each light can be controlled by an IO pin to indicate the status. |
| Serial Port | 1.25mm 4P socket. It can be used for serial port debugging, downloading, and communication. An external USB-to-serial port module is required. |
| Battery Interface | 1.25mm 2P socket, used to connect a 3.7V polymer lithium battery.The battery is charged through the battery charging management circuit and can also be used for battery power supply. Pay attention to the positive and negative poles of the interface. |
| BOOT Button | Used to enter the download mode or conduct button testing.Press and hold this button while powering on, then release it to enter the download mode. Or after powering on, press and hold this button, then press the RESET button, release the RESET button, and then release this button to enter the download mode. When there is no need to enter the download mode, this button can be used as a regular button. |
| TYPE-C Interface | Used for module power supply and program downloading. This interface is connected to the one-click download circuit on the module,allowing it to automatically enter the download mode (no need to press the BOOT button). |
| RESET Button | Used to reset the ESP32 main control and the LCD. Press it for level reset. |
| Expansion Input Pins | 1.25mm 2P socket. IO35 and IO39 are two IO pins with only input functions, used to connect input signals. |
| Speaker Interface | 1.25mm 2P socket. Used to connect a speaker for audio playback. |
| SPI Peripheral Interface | 1.25mm 4P socket. Used to connect external SPI communication devices. This SPI interface is shared with the MicroSD. It can be used as a normal IO. |
| I2C Peripheral Interface | 1.25mm 4P socket. Used to connect external IIC communication devices. It can be used as a normal IO. |
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