LILYGO T-Echo Plus User Manual

1. Introduction

The LILYGO T-Echo Plus is an advanced, low-power wireless module designed for a wide range of DIY and programmable applications. It serves as an upgraded version of the original T-Echo, incorporating several key enhancements for improved functionality and user experience.

Key features of the T-Echo Plus include an increased battery capacity, a robust battery protection bracket, integrated vibration and buzzer functionalities, and optimized button responsiveness. Its design features a thicker profile, a finger grip for comfortable handling, and a 1/4-inch nut for versatile mounting options. This module is powered by an NRF52840 microcontroller, equipped with an SX1262 LoRa transceiver for long-range communication, a 1.54-inch E-Paper display for low-power visual feedback, and an L76K GNSS module for multi-system positioning. The current version comes pre-flashed with LILYGO firmware and includes an external LoRa antenna.

2. Specifications

The LILYGO T-Echo Plus boasts the following technical specifications:

3. Setup

To begin using your LILYGO T-Echo Plus, follow these setup instructions:

1. Attach LoRa Antenna: Carefully screw the provided external LoRa antenna into the SMA connector on the top of the T-Echo Plus module. Ensure it is finger-tight to establish a secure connection.



2. Initial Charge: Connect the T-Echo Plus to a 5V USB power source using a compatible USB-C cable to fully charge the internal 2400mAh battery before first use.
3. Firmware Installation/Update: The T-Echo Plus is a programmable development board. For custom applications or updates, you will need to flash firmware.
   • Visit the official LILYGO GitHub repository for the T-Echo Plus for detailed instructions, sample code, and the latest firmware: https://github.com/Xinyuan-LilyGO/LilyGO-T-Echo
   • Follow the specific flashing procedures outlined in the repository's documentation. This typically involves using a USB connection and a suitable programming tool.
4. Mounting (Optional): Utilize the integrated 1/4-inch nut for mounting the device to compatible tripods, stands, or other fixtures as needed for your project.

4. Operation

Operating the LILYGO T-Echo Plus involves interacting with its various components based on the loaded firmware:

• Power On/Off: The device typically has a power button or a specific sequence to power it on or off. Refer to the firmware documentation for exact procedures.
• E-Paper Display: The 1.54-inch E-Paper display provides visual information. Its low-power nature means updates may not be instantaneous, with a full refresh time of approximately 2 seconds. The display content is controlled by the loaded firmware.
• LoRa Communication: The SX1262 LoRa transceiver enables long-range, low-power wireless communication. Ensure the external antenna is properly connected for optimal performance. The specific frequency (400-520 MHz or 830-945 MHz) depends on the module variant and regional regulations.
• GNSS Positioning: The L76K GNSS module supports GPS, GLONASS, BeiDou, and QZSS for accurate location tracking. For best results, operate the device outdoors with a clear view of the sky.
• Sensors and Feedback:
  • BHI260AP IMU: Provides motion sensing capabilities (e.g., acceleration, gyroscope data).
  • Vibration Motor & Buzzer: These components offer haptic and audible feedback, controlled by the firmware for alerts or notifications.
• Button Interaction: The device features buttons for user input. Their functions are defined by the loaded firmware (e.g., menu navigation, data logging, mode switching).
• USB Interface: The USB port is used for charging, firmware flashing, and serial communication for debugging or data transfer, depending on the firmware implementation.

5. Maintenance

Proper maintenance ensures the longevity and optimal performance of your T-Echo Plus:

• Battery Care:
  • Avoid fully discharging the 2400mAh battery frequently.
  • Store the device with a partial charge (around 50%) if not used for extended periods.
  • Use only compatible 5V USB power sources for charging.
• Cleaning:
  • Wipe the device with a soft, dry cloth.
  • Avoid using harsh chemicals or abrasive materials.
  • Ensure no moisture enters the USB port or other openings.
• Firmware Updates: Regularly check the official LILYGO GitHub repository (https://github.com/Xinyuan-LilyGO/LilyGO-T-Echo) for new firmware versions, bug fixes, and feature enhancements. Keeping your firmware up-to-date can improve performance and stability.
• Antenna Connection: Periodically check that the LoRa antenna is securely attached. A loose connection can degrade wireless performance.

6. Troubleshooting

If you encounter issues with your T-Echo Plus, consider the following troubleshooting steps:

• Device Not Powering On:
  • Ensure the battery is sufficiently charged. Connect to a USB power source and allow some time for charging.
  • Verify the USB cable and power adapter are functional.
• E-Paper Display Issues:
  • If the display is blank or shows garbled text, try restarting the device.
  • Ensure the firmware is correctly loaded and configured for the display.
• LoRa Communication Problems:
  • Check that the external LoRa antenna is securely connected.
  • Verify that both transmitting and receiving devices are using compatible LoRa frequencies and settings (e.g., spreading factor, bandwidth).
  • Ensure there are no major obstructions between the devices.
• GNSS Not Acquiring Fix:
  • Operate the device outdoors with a clear, unobstructed view of the sky.
  • Allow sufficient time (several minutes) for the GNSS module to acquire satellite signals.
  • Ensure the firmware is correctly initializing and reading data from the L76K module.
• Firmware Upload Failure:
  • Double-check your USB connection and ensure the correct drivers are installed.
  • Verify that you are using the correct flashing tool and settings as specified in the GitHub documentation.
  • Try a different USB port or cable.

7. User Tips

• Programming Knowledge Recommended: The T-Echo Plus is a development board. It is highly recommended for users with a programming background (e.g., engineers, students, manufacturers) to fully utilize its capabilities.
• Test with Samples: If you are new to this product or planning a large-scale deployment, consider purchasing 2-3 samples first. This allows for thorough testing to ensure the product meets your specific project requirements before a bulk purchase.
• Utilize Online Resources: For technical discussions, usage issues, or community support, refer to the official LILYGO GitHub repository or relevant online communities. These platforms often contain valuable insights and solutions from other users and developers.
• Clear Communication for Support: When seeking assistance for product or order-related questions, provide clear descriptions, and if possible, include pictures or videos to illustrate your problem. This helps customer service or technical support diagnose issues more quickly and accurately.

8. Support

For further assistance and resources, please refer to the following:

• Official GitHub Repository: For the latest firmware, sample code, and detailed technical documentation, visit https://github.com/Xinyuan-LilyGO/LilyGO-T-Echo.
• Customer Service: For any questions regarding your order or specific product issues not covered in this manual or the GitHub resources, please contact the seller's customer service. Providing clear details, pictures, or videos of your issue will facilitate a quicker resolution.