LilyGo T-Echo TTGO Meshtastic 868MHz with BME280 Sensor

This is a LoRaWAN APRS Tracker from LilyGo with an integrated BME280 sensor. The T-Echo is a continuation of the T-Beam series. The T-Echo features an L76K multi-system GNSS module that measures the position with a 2m accuracy and then transmits via an SX1262 LoRa transceiver. The integrated nRF52840 MCU offers Bluetooth 5.0, Bluetooth Mesh, Zigbee, and ANT connectivity. Additionally, communication can be made via all common interfaces such as UART, SPI, I2C, I2S, QSPI, TWI, and PDM. A 1.54-inch E-Paper Display shows you all the necessary information with very low power consumption. Together with the integrated 850mAh Li-Po battery, this enables a much longer runtime compared to an OLED Display. The module has an NFC sensor on the bottom, which allows you to conveniently refresh the E-Paper display with your mobile phone. The module is programmed via a USB-C port.

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Features:

868MHz LoRa APRS Tracker
Bluetooth 5.0, Bluetooth Mesh, Zigbee, ANT, 802.15.4, and Thread connectivity
BME280 sensor for measuring temperature, humidity, and air pressure.
L76K GPS module, position measurement with 2m accuracy
1.54-inch low power E-Paper display
Reset, Boot and 1x programmable touch button
NFC sensor for display refresh
Stable ABS casing

Documentation:

Pinout LilyGo T-Echo:

Technical Details:

Manufacturer: LilyGo
Manufacturer SKU: H512
MCU: nRF52840
Flash: 2MB
RAM: 256KB
Bus Interfaces: UART, SPI, TWI, PDM, I2S, QSPI
Wireless connectivity: Bluetooth 5.0, Bluetooth Mesh, Zigbee, ANT, 802.15.4, and Thread
LoRa Transceiver: SX1262
Frequency: EU868MHz
Display size: 1.54 inches
Greyscale: 2
Full refresh: 2s
Resolution: 200x200
RTC Chip: PCF8563
GPS Module: L76K
Position tolerance: 2m
Sensor: BME280 from Bosch (temperature, humidity, air pressure)
USB Interface: USB-C
Touch Button: TTP223
Expansion: 10pin BTB expansion socket
Dimensions: 66 x 54 x 24mm
Weight: 132g