LILYGO TTGO T-Echo transmitter

Choose the LILYGO TTGO T‑Echo portable tracker with LoRa, E‑ink display and BME280 sensor!

Get a compact device for long-distance travel, geolocation and monitoring systems. The LILYGO TTGO T-Echo transmitter is built on a powerful nRF52840 microcontroller with support for Bluetooth 5 and Thread. The built-in LoRa transceiver SX1262 provides communication over kilometers with minimal power consumption. The E‑ink display retains information even when the power is turned off, and the 850 mAh battery guarantees long-lasting battery life. Choose a reliable tool for expeditions and smart IoT projects.

• Long-range LoRa SX1262. Data transmission over distances of up to several kilometers in the field.

• Energy efficient nRF52840 processor. Dual-core ARM Cortex‑M4, 2 MB Flash and 2 MB RAM, BLE, Zigbee, Thread support.

• Electronic paper (E‑ink). Bright 1.54″ display that displays data even without power.

• Built-in BME280 sensor. Measurement of temperature, humidity and atmospheric pressure.

• Autonomy and convenience. 850 mAh battery, GPS (optional), ABS case, operation in the 433/868/915 MHz bands.

Operating principle and scope of application

The LILYGO TTGO T‑Echo device is designed to work autonomously in remote locations. The nRF52840 microcontroller controls the sensors, LoRa module and display. The E‑ink screen displays coordinates, temperature, pressure and other telemetry, while remaining readable under the sun and without wasting energy on updates. The SX1262 LoRa transceiver sends data to a ground station, another radio, or to the cloud.

Due to low power consumption, the device can operate for days on the built-in battery. Bluetooth and Zigbee support allows easy integration into existing IoT networks. The board is compatible with Arduino IDE, PlatformIO and is open source.

LILYGO TTGO T‑Echo is an ideal choice for creating trackers, vehicle monitoring systems, environmental sensors, autonomous weather stations, and also for use as a portable telemetry module for FPV drones. Thanks to the E‑ink display and built-in sensors, it is perfect for field conditions and expeditions.

Technical characteristics

• MCU: nRF52840
• Flash memory: 2 MB
• RAM: 2 MB
• Bus interfaces: UART, SPI, TWI, PDM, I2S, QSPI
• Wireless: Bluetooth 5, Thread, Bluetooth Mesh, ANT, 802.15.4, Zigbee
• Sensor: versions with and without temperature/pressure sensor BME280
• LoRa transceiver: SX1262, long range, low power consumption
• Frequency bands: global coverage 433 / 868 / 915 MHz
• Body material: ABS
• Battery capacity: 850 mAh.