LILYGO TTGO T-Echo NRF52840 LoRa Wireless Module User Manual

1. Produk Lebihview

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. Fitur Utama

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

3. Isi Paket

Verifikasi bahwa semua item ada dalam paket Anda:

Figure 2: T-Echo module and USB cable

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

4. Identifikasi Komponen

Gambar 3: Kembali view dengan komponen berlabel

Figure 4: Detailed Pinout Diagram

Figure 5: Button functions and LED indicators

5. Pengaturan

5.1 Hardware Assembly

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 weblokasi.
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. Petunjuk Pengoperasian

6.1 Pengoperasian Dasar Perangkat

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.

• Tombol 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.
• Tekan lama untuk mematikan perangkat.
• Antarmuka sentuh: Changes the display interface (available in SoftRF program).
• Indikator LED:
• 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 Mengirim dan Menerima Pesan

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. Pemeliharaan

• Pengisian Baterai: Charge the device using the provided USB-C cable. The red LED indicates charging status, and the green LED indicates battery level.
• Pembaruan Firmware: Periodically check the official Meshtastic webSitus untuk pembaruan firmware guna memastikan kinerja optimal dan akses ke fitur-fitur baru.
• Pembersihan: Gunakan kain lembut dan kering untuk membersihkan perangkat. Hindari penggunaan bahan kimia keras atau bahan abrasif.
• Penyimpanan: Simpan perangkat di tempat yang sejuk dan kering, jauhkan dari sinar matahari langsung dan suhu ekstrem.

9. Penyelesaian masalah

• Perangkat Tidak Menyala: Ensure the battery is charged. Connect the device to a power source via USB-C.
• Tidak Ada Koneksi Bluetooth: 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 Tidak Berfungsi: Ensure the GPS antenna is properly connected and the device has a clear view dari langit.
• E-Paper Display Issues: If the display is unresponsive or shows artifacts, try resetting the device.

10. Spesifikasi

11. Garansi dan Dukungan

For warranty information and technical support, please refer to the documentation provided with your purchase or visit the official LILYGO webSitus. Ketentuan garansi spesifik dapat berbeda-beda tergantung wilayah dan pengecer.