LilyGo T-Echo Lite 868 MHz with Case

The LilyGo T-Echo Lite is the compact, energy-saving version of the T-Echo Board, combining an nRF52840 microcontroller with an 868 MHz LoRa radio module and e-paper display in a robust, transparent case. The board is ideal for energy-efficient sensor, tracking, and communication projects and is fully compatible with the Meshtastic firmware. The integrated nRF52840 controller offers Bluetooth 5, Thread, Zigbee, and 802.15.4 support. The energy-saving e-paper display continuously shows status information without consuming energy. The module is powered via USB-C or a 3.7 V Li-Ion battery, whose voltage can be measured internally. With the integrated 868 MHz LoRa module, the board is ideal for long-range point-to-point or mesh communication in the European ISM band.

Features:

nRF52840 microcontroller (1 MB Flash / 256 kB RAM)
LoRa radio module 868 MHz (EU band)
E-paper display for extremely low energy consumption
Compatible with Meshtastic, Arduino IDE, and VS Code
ADC-based battery measurement (IO 0.2 / IO 0.31)
USB-C port for charging and programming
Optional GPS extension via L76K module
Preassembled transparent protective case

Example applications:

LoRa mesh communication (Meshtastic networks)
Portable sensor and tracking devices
Outdoor data logger with e-paper display
Development of BLE, Zigbee, or Thread networks

Documentation:

Technical specifications:

Manufacturer: LILYGO
Manufacturer SKU: H747
Microcontroller: Nordic nRF52840
Flash memory: 1 MB
RAM: 256 kB
Display: 1.22 Inch e-paper
Resolution: 176x192
Programming platform: Arduino IDE / VS Code
Wireless: Bluetooth 5, Thread, ANT, Bluetooth Mesh, 802.15.4, Zigbee, 2.4 GHz proprietary
LoRa frequency: 868 MHz (SX1262)
GPS: optional via L76K module
Power supply: USB-C / Li-Ion 3.7 V
Battery measurement: ADC IO 0.2 / IO 0.31
Case: plastic transparent
Dimensions: 41 × 40 × 19 mm
Weight: 53 g