LILYGO T-ETH-Lite ESP32 Development Board User Manual

1. ບົດແນະນຳ

The LILYGO T-ETH-Lite ESP32 is a compact development board designed for projects requiring both Wi-Fi and Ethernet connectivity. It integrates an ESP32-WOVER-E microcontroller, an RTL8201 Ethernet chip, and a TF card slot, making it suitable for various IoT applications, network devices, and embedded systems. This manual provides essential information for setting up, operating, and maintaining your T-ETH-Lite ESP32 board.

2. ຄຸນລັກສະນະຂອງຜະລິດຕະພັນ

• Microcontroller: ESP32-WOVER-E
• ໜ່ວຍຄວາມຈຳ: 16MB Flash, 8MB PSRAM
• ການເຊື່ອມຕໍ່ແບບໄຮ້ສາຍ: Wi-Fi 802.11 b/g/n, Bluetooth BR/EDR V4.2 + BLE
• ການເຊື່ອມຕໍ່ແບບມີສາຍ: RTL8201 Ethernet
• Onboard Peripherals: ສະລັອດຕິງບັດ TF
• ປຸ່ມ: Reset, Boot
• ຂະໜາດ: ຂະໜາດປະມານ 2.32 x 1.1 x 0.43 ນິ້ວ (5.9 x 2.8 x 1.1 cm)
• Expandability: Supports POE Shield (sold separately)

3. ເນື້ອໃນຊຸດ

Verify that all items are present in your package. If any components are missing or damaged, please contact your vendor.

• 1 x LILYGO T-ETH-Lite ESP32 Development Board
• 2 x 15-pin Headers
• 1 x 2*4-pin Header

ຮູບທີ 3.1: The image displays the LILYGO T-ETH-Lite ESP32 board along with two 15-pin headers and one 2x4-pin header, which are typically included in the package for connectivity.

4. ຮາດແວຫຼາຍກວ່າview

The T-ETH-Lite ESP32 board features a compact design with essential components for network-enabled embedded projects. Below are diagrams illustrating the front, back, and pinout configurations of the board.

4.1 ແຜນຜັງກະດານ

ຮູບທີ 4.1: ດ້ານໜ້າ view of the LILYGO T-ETH-Lite ESP32 development board, showing the ESP32-WOVER-E module, Ethernet chip, and various pin headers.

ຮູບທີ 4.2: ກັບຄືນໄປບ່ອນ view of the LILYGO T-ETH-Lite ESP32 development board, highlighting the TF card slot and additional components.

4.2 ຂະໜາດ

ຮູບທີ 4.3: This image illustrates the physical dimensions of the LILYGO T-ETH-Lite ESP32 board, with length (L) approximately 5.9 cm, width (W) 2.8 cm, and height (H) 1.1 cm.

4.3 ແຜນວາດ Pinout

Understanding the pinout is crucial for connecting external components and programming the board. The diagram below details the GPIOs, power pins, and other interfaces.

ຮູບທີ 4.4: Detailed pinout diagram for the LILYGO T-ETH-Lite ESP32, showing GPIO assignments, power rails (3V3, 5V), ground (GND), TF card connections (SD_MISO, SD_MOSI, SD_SCLK, SD_CS), ADC channels, Touch pins, and serial communication pins (TXD, RXD). It also indicates the RTL8201 Ethernet module connections and suggests using a USB to TTL adapter for programming.

5. ຄໍາແນະນໍາການຕິດຕັ້ງ

Follow these steps to prepare your LILYGO T-ETH-Lite ESP32 for development.

5.1 ການເຊື່ອມຕໍ່ຮາດແວ

1. Attach Pin Headers: Solder the provided pin headers to the board if not already attached. This allows for easy connection to a breadboard or custom circuitry.
2. ການສະຫນອງພະລັງງານ: Connect a 5V power supply to the 5V IN pin and GND. Alternatively, if using a POE Shield (sold separately), power can be supplied via Ethernet.
3. USB-to-TTL Adapter: The T-ETH-Lite ESP32 does not have an onboard USB-to-serial converter. You will need an external USB-to-TTL adapter for programming. Connect the adapter's TXD to the board's RXD, RXD to TXD, and GND to GND. Ensure the adapter's voltage level matches the ESP32 (3.3V).
4. ສາຍ Ethernet: Connect a standard Ethernet cable to the RJ45 port for wired network access.
5. ບັດ TF (ທາງເລືອກ): Insert a formatted TF card into the slot if your application requires data storage.

5.2 ການຕັ້ງຄ່າສະພາບແວດລ້ອມຊອບແວ

1. Install Arduino IDE or ESP-IDF: Download and install the Arduino IDE or Espressif IoT Development Framework (ESP-IDF) based on your development preference.
2. Install ESP32 Board Support: For Arduino IDE, add the ESP32 board manager URL in preferences and install the ESP32 boards package. For ESP-IDF, follow the official installation guide.
3. ຕິດຕັ້ງໄດເວີ: Ensure drivers for your USB-to-TTL adapter are installed on your computer.
4. Clone GitHub Repository: ຕົວຢ່າງample code and libraries specific to the T-ETH-Lite series, clone the official LILYGO GitHub repository: github.com/Xinyuan-LilyGO/LilyGO-T-ETH-Series.

5.3 Uploading Firmware

1. ເລືອກກະດານ: In your IDE, select the appropriate ESP32 board (e.g., "ESP32 Dev Module").
2. ເລືອກຜອດ: Choose the serial port corresponding to your USB-to-TTL adapter.
3. Enter Bootloader Mode: To upload code, press and hold the ເກີບ button on the T-ETH-Lite board, then press the ຣີເຊັດ button. Release ຣີເຊັດ, ຫຼັງຈາກນັ້ນປ່ອຍຕົວ ເກີບ. The board is now in bootloader mode.
4. ລະຫັດອັບໂຫຼດ: Compile and upload your sketch or program.

6. ຄໍາແນະນໍາການດໍາເນີນງານ

Once the firmware is uploaded, the T-ETH-Lite ESP32 will execute the programmed logic. For network applications, ensure your code initializes the Ethernet and/or Wi-Fi interfaces correctly.

• Ethernet Operation: Your code should initialize the RTL8201 Ethernet controller and obtain an IP address via DHCP or static assignment.
• ການ​ດໍາ​ເນີນ​ງານ Wi​-Fi​: Configure your ESP32 code to connect to your desired Wi-Fi network (SSID and password).
• TF Card Access: Use the appropriate libraries (e.g., SD.h in Arduino) to read from and write to the TF card.
• GPIO Control: Program the GPIO pins as inputs or outputs to interface with sensors, actuators, or other external circuits. Refer to the pinout diagram (Figure 4.4) for available GPIOs.

7. ບໍາລຸງຮັກສາ

Proper care ensures the longevity and reliable operation of your development board.

• ຈັດການດ້ວຍຄວາມລະມັດລະວັງ: Avoid dropping the board or subjecting it to physical stress.
• ການໄຫຼຄົງທີ່: Always handle the board in a static-safe environment to prevent damage to sensitive electronic components.
• ການສະຫນອງພະລັງງານ: Use a stable 5V power supply. Incorrect voltage ສາມາດທຳລາຍກະດານໄດ້.
• ເງື່ອນໄຂສິ່ງແວດລ້ອມ: Operate the board within typical indoor temperature and humidity ranges. Avoid extreme temperatures, moisture, and dust.
• ທໍາຄວາມສະອາດ: If necessary, gently clean the board with a soft, dry brush or compressed air. Avoid liquids.

8. ການແກ້ໄຂບັນຫາ

ຖ້າທ່ານພົບບັນຫາ, ໃຫ້ອ້າງອີງເຖິງຂັ້ນຕອນການແກ້ໄຂບັນຫາທົ່ວໄປຕໍ່ໄປນີ້.

1. ບອດບໍ່ໄດ້ເປີດ:
   • Verify the 5V power supply is connected correctly and providing sufficient current.
   • Check for any short circuits on the board.
2. Failed Firmware Upload:
   • Ensure the USB-to-TTL adapter is correctly connected (TX to RX, RX to TX, GND to GND).
   • Confirm the correct serial port is selected in your IDE.
   • Make sure the board is in bootloader mode (hold Boot, press Reset, release Reset, release Boot).
   • Check that the USB-to-TTL adapter drivers are installed.
3. Ethernet Not Connecting:
   • Verify the Ethernet cable is securely connected to both the board and the network device.
   • Check your code for correct Ethernet initialization and configuration (e.g., DHCP client).
   • Ensure your network infrastructure (router, switch) is functioning correctly.
4. ບັນຫາການເຊື່ອມຕໍ່ Wi-Fi:
   • Double-check the Wi-Fi SSID and password in your code.
   • Ensure the Wi-Fi network is within range and operating on a 2.4GHz band.
   • Verify that your ESP32 code correctly initializes the Wi-Fi module.
5. ກວດບໍ່ພົບບັດ TF:
   • Ensure the TF card is inserted correctly and fully seated.
   • Verify the TF card is formatted to a compatible file ລະບົບ (ເຊັ່ນ: FAT32).
   • Check your code for correct TF card initialization and pin assignments.

9. ຂໍ້ມູນຈໍາເພາະ

10. ສະຫນັບສະຫນູນແລະຊັບພະຍາກອນ

For further technical support, code examples, and community discussions, please refer to the official LILYGO GitHub repository and community forums.

• Official GitHub Repository: github.com/Xinyuan-LilyGO/LilyGO-T-ETH-Series
• ຢ່າງເປັນທາງການຂອງ LILYGO Webເວັບໄຊ: www.lilygo.cc