LILYGO TTGO T-Echo NRF52840 LoRa Wireless Module User Manual

1. නිෂ්පාදන අවසන්view

The LILYGO TTGO T-Echo is a versatile wireless communication module featuring the NRF52840 microcontroller, LoRa SX1262 transceiver, L76K GPS, and a 1.54-inch E-Paper display. This device is designed for long-range, low-power communication, making it suitable for off-grid messaging, tracking, and various IoT applications. It supports mesh networking protocols like Meshtastic, allowing devices to relay messages to extend communication range.

Figure 1: LILYGO TTGO T-Echo NRF52840 LoRa Wireless Module

2 ප්රධාන ලක්ෂණ

• ක්ෂුද්‍ර පාලකය: NRF52840
• LoRa Transceiver: SX1262 (915MHz) for long-range, low-power communication.
• GPS මොඩියුලය: L76K Multi-System Positioning GNSS (GPS, GLONASS, BeiDou, QZSS) with improved receiving and anti-interference attributes.
• සංදර්ශකය: 1.54-inch E-Paper display (200x200 resolution, 2 grey levels, 2s full refresh time).
• රැහැන් රහිත සම්බන්ධතාවය: Bluetooth 5, Thread, Bluetooth Mesh, ANT, 802.15.4, Zigbee.
• Bus Interfaces: UART, SPI, TWI, PDM, I2S, QSPI.
• මතකය: 2MB Flash, 256KB RAM.
• Optional Sensor: BME280 temperature and pressure sensor (depending on model).

3. පැකේජ අන්තර්ගතය

ඔබගේ පැකේජයේ සියලුම අයිතම ඇති බව තහවුරු කරගන්න:

Figure 2: T-Echo module and USB cable

• 1 x SoftRF Motherboard
• 1 x GPS ඇන්ටනාව
• 1 x LORA 915MHz Antenna
• 1 x NFC Antenna
• 1 x Touch Cable
• 1 x Jst 2pin1.25mm Battery Cable
• 1 x TYPE-C USB Cable
• 1 x 850mA Capacity Battery
• 1 x ABS Material Enclosure White

4. සංරචක හඳුනා ගැනීම

රූපය 3: ආපසු view ලේබල් කළ සංරචක සහිත

Figure 4: Detailed Pinout Diagram

Figure 5: Button functions and LED indicators

5. පිහිටුවීම

5.1 දෘඩාංග එකලස් කිරීම

The T-Echo module comes with an ABS enclosure. Follow these steps to assemble the device:

1. Connect the LoRa antenna to the module's SMA connector.
2. Carefully place the main board into the bottom part of the enclosure.
3. Connect the battery to the appropriate JST connector on the board.
4. Secure the battery within the enclosure, often using double-sided adhesive foam for isolation and stability.
5. Attach the top part of the enclosure and secure it with the provided screws.

5.2 Firmware Installation

To utilize the full capabilities of your LILYGO T-Echo, it is recommended to install the Meshtastic firmware. This firmware enables mesh networking capabilities for off-grid communication.

1. Download the Meshtastic firmware for the LILYGO T-Echo from the official Meshtastic webඅඩවිය.
2. Connect your T-Echo device to your computer using the provided USB-C cable.
3. Follow the instructions on the Meshtastic website or the provided video to flash the firmware onto your device. This typically involves using a web flasher tool or a command-line interface.

6. මෙහෙයුම් උපදෙස්

6.1 මූලික උපාංග ක්‍රියාකාරිත්වය

The T-Echo features two buttons (Button 1 and Button 2) and a touch interface for navigation and control, especially when running the SoftRF program. LED indicators provide visual feedback on device status.

• බොත්තම 1:
• Press once to reset the device.
• Press twice to enter Programming Development Mode.
• Button 2 (when device is turned on, in button mode):
• Press once to change the display interface.
• Press twice to turn off/on the backlight.
• උපාංගය ක්‍රියා විරහිත කිරීමට දිගු ඔබන්න.
• ස්පර්ශ අතුරුමුහුණත: Changes the display interface (available in SoftRF program).
• LED දර්ශක:
• Red LED: USB power supply/charge indicator.
• Green LED: Battery power indicator.
• Blue LED: Bluetooth low energy work indicator.

Figure 6: Button functions and LED indicators

6.2 පණිවිඩ යැවීම සහ ලැබීම

After installing the Meshtastic firmware and connecting your device to a mobile phone via Bluetooth, you can use the Meshtastic app to send and receive text messages.

1. Ensure your T-Echo is powered on and connected to your phone via Bluetooth.
2. Open the Meshtastic application on your smartphone.
3. Select the desired channel or recipient within the app.
4. Type your message and send it. The T-Echo will transmit the message over the LoRa network.
5. Incoming messages will be displayed on the T-Echo's E-Paper screen and within the Meshtastic app.

7. Wiring and Sensor Integration

The LILYGO T-Echo can be integrated with external sensors and relays for various applications, such as door monitoring or remote control. The following diagram illustrates a typical wiring setup for a door monitoring system using a Hall Effect sensor and a relay.

8. නඩත්තු කිරීම

• බැටරි ආරෝපණය: Charge the device using the provided USB-C cable. The red LED indicates charging status, and the green LED indicates battery level.
• ස්ථිරාංග යාවත්කාලීන කිරීම්: Periodically check the official Meshtastic webප්‍රශස්ත ක්‍රියාකාරිත්වය සහ නව විශේෂාංග වෙත ප්‍රවේශය සහතික කිරීම සඳහා ස්ථිරාංග යාවත්කාලීන කිරීම් සඳහා අඩවිය.
• පිරිසිදු කිරීම: උපාංගය පිරිසිදු කිරීම සඳහා මෘදු වියළි රෙද්දක් භාවිතා කරන්න. රළු රසායනික ද්‍රව්‍ය හෝ උල්ෙල්ඛ ද්‍රව්‍ය භාවිතා කිරීමෙන් වළකින්න.
• ගබඩා: උපාංගය සෘජු හිරු එළියෙන් සහ අධික උෂ්ණත්වයන්ගෙන් ඈත්ව සිසිල් වියළි ස්ථානයක ගබඩා කරන්න.

9. දෝශ නිරාකරණය

• උපාංගය ක්‍රියාත්මක නොවේ: Ensure the battery is charged. Connect the device to a power source via USB-C.
• බ්ලූටූත් සම්බන්ධතාවයක් නොමැත: Verify Bluetooth is enabled on your smartphone and the T-Echo. Ensure the blue LED is active. Try restarting both devices.
• Unable to Send/Receive Messages: Check the LoRa antenna connection. Ensure both devices are within range and running compatible Meshtastic firmware. Verify channel settings in the Meshtastic app.
• GPS ක්‍රියා නොකරයි: Ensure the GPS antenna is properly connected and the device has a clear view අහසින්.
• E-Paper Display Issues: If the display is unresponsive or shows artifacts, try resetting the device.

10. පිරිවිතර

11. වගකීම් සහ සහාය

For warranty information and technical support, please refer to the documentation provided with your purchase or visit the official LILYGO webඅඩවිය. නිශ්චිත වගකීම් නියමයන් කලාපය සහ සිල්ලර වෙළෙන්දා අනුව වෙනස් විය හැකිය.