The LILYGO T-Echo Plus is a compact, battery-powered smart tag designed for wireless telemetry, motion tracking, and geolocation scenarios. It integrates LoRa communication, GNSS positioning, Bluetooth Mesh, and a 6-axis IMU (Inertial Measurement Unit) within a rugged enclosure. Combined with vibration and visual feedback features, it is well-suited for mobile deployments, field operations, and remote monitoring systems.
At its core, the T-Echo Plus is powered by the Nordic Semiconductor nRF52840 SoC, built on the ARM Cortex-M4F microcontroller architecture running at 64 MHz with hardware floating-point support. This SoC is notable for its broad protocol compatibility—it supports Bluetooth 5, Bluetooth Mesh, Thread, Zigbee, ANT, and IEEE 802.15.4, offering engineers the flexibility to deploy the device across diverse IoT network topologies.
The device includes 2 MB Flash and 2 MB RAM, supports over-the-air (OTA) firmware updates, and implements advanced power management to maximize operational endurance in field conditions.
Core Specifications
| Category | Specification | Details |
|---|---|---|
| Core SoC | Main Controller | Nordic Semiconductor nRF52840, ARM Cortex-M4F @ 64 MHz, with hardware floating-point |
| Core SoC | Memory | 2 MB Flash, 2 MB RAM |
| Core SoC | System Features | Supports OTA firmware updates and advanced power management |
| Wireless | Bluetooth & Thread | Bluetooth 5, Bluetooth Mesh, Thread, Zigbee, ANT, IEEE 802.15.4 |
| Wireless | LoRa Module | Semtech SX1262 transceiver, compatible with 433 / 868 / 915 / 920 MHz global sub-GHz bands |
| Positioning | GNSS Module | L76K, supporting GPS, GLONASS, BeiDou, and QZSS multi-constellation systems |
| Sensors | IMU | BHI260AP (6-axis AI-enhanced IMU) connected via I²C interface |
| Display & Feedback | Display | 1.54-inch SPI E-ink screen, 200×200 px resolution, 2-level grayscale, full refresh in ~2 s |
| Display & Feedback | Feedback | Integrated buzzer (audio) and vibration motor (haptic) |
| Power & Expansion | Power Supply | Powered by a 2400 mAh Li-ion battery |
| Power & Expansion | Expansion | 1 × Grove connector for additional I/O expansion |
| Mechanical Design | Mounting Options | Built-in carabiner clip, 1/4-inch tripod mount, and M2 screw holes for secure attachment |
| Customization | Price & Options | USD 64.22; customizable LoRa band and enclosure color options |
Firmware and Compatibility
The T-Echo Plus ships with LILYGO’s official firmware, supporting essential functions such as LoRa message transmission, GNSS positioning, BLE connectivity, and peripheral feedback control (buzzer and vibration motor). Firmware updates and technical documentation are regularly published through LILYGO’s official GitHub repository, ensuring developers have direct access to source code and update tools.
In terms of third-party firmware, previous T-Echo models have been compatible with Meshtastic, a popular open-source LoRa mesh firmware. However, as of the latest information, the T-Echo Plus is not yet officially listed among Meshtastic’s supported devices. Compatibility may be added in future firmware updates once official integration testing is completed.
The LILYGO T-Echo Plus is available for direct purchase from LILYGO’s official online store. Customers can specify custom LoRa frequency bands or enclosure colors based on deployment requirements. With its combination of multi-radio support, GNSS, and onboard sensors, the T-Echo Plus stands out as a versatile IoT edge device for location-aware telemetry, smart asset tracking, and distributed sensor networks.
