# LILYGO T-Echo Lite

> Simplified T-Echo with nRF52840, SX1262 LoRa, and optional L76K GPS — a low-cost, low-power LoRa node and Meshtastic-compatible board for off-grid mesh networking.

## Quick Facts

- **Brand:** LILYGO
- **Board Type:** dev-board
- **Price:** ~$13.41
- **Product Readiness:** developer
- **CPU:** nRF52840 ARM Cortex-M4F @ 64MHz
- **CPU Architecture:** ARM Cortex-M4F
- **CPU Cores:** 1
- **RAM:** 256KB SRAM
- **Flash:** 1MB
- **USB:** USB-C
- **Power:** 5V + LiPo
- **Operating Voltage:** 3.3V

## Connectivity

- **Bluetooth:** BLE 5.0
- **Lora:** SX1262 433/868/915MHz
- **Zigbee:** Zigbee (nRF52840)
- **Thread:** Thread (nRF52840)

## Open Source

- **Firmware:** Yes
- **Schematics:** No
- **PCB Layout:** No

## Compatible Firmware

arduino, platformio, meshtastic, meshcore

## Use Cases

- lora-mesh-networking
- off-grid-communication
- gps-tracking
- environmental-monitoring

## Components

- **nRF52840** (mcu): Nordic Semiconductor nRF52840 ARM Cortex-M4F at 64MHz with 1MB Flash, 256KB RAM, supporting BLE 5, Thread, Zigbee, ANT, and 802.15.4. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Finfocenter.nordicsemi.com%2Fpdf%2FnRF52840_PS_v1.7.pdf&ref=openhardware.directory&product=lilygo-t-echo-lite&source=md-export)
- **SX1262** (radio): Semtech SX1262 LoRa transceiver covering 433/868/915 MHz bands with +22 dBm output and -148 dBm sensitivity. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fsemtech.com%2Fuploads%2Fdocuments%2FDS_SX1261-2_V2.1.pdf&ref=openhardware.directory&product=lilygo-t-echo-lite&source=md-export)
- **L76K** (gps): Quectel L76K multi-GNSS module supporting GPS, GLONASS, BeiDou, and QZSS constellations — available as optional add-on. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.quectel.com%2Fwp-content%2Fuploads%2F2021%2F03%2FQuectel_L76K_GNSS_Specification_V1.0.pdf&ref=openhardware.directory&product=lilygo-t-echo-lite&source=md-export)

## Protocols

- **SPI**
- **I2C**
- **UART**

## Description

## Overview

The LILYGO T-Echo Lite is a streamlined version of the T-Echo platform, combining the Nordic Semiconductor nRF52840 multiprotocol SoC with a Semtech SX1262 LoRa radio in a compact, cost-effective form factor. Unlike the full T-Echo, the Lite version omits the built-in e-paper display and battery, allowing users to choose their own display and power configuration. It targets makers who want a lightweight LoRa mesh networking node with BLE 5, Thread, Zigbee, and 802.15.4 capabilities. The board is fully compatible with Meshtastic firmware for off-grid text messaging and supports an optional Quectel L76K GPS module for location-aware mesh networking. Available in 433MHz, 868MHz, and 915MHz variants, with optional shell enclosure and external antenna configurations.

## Where to Buy

- [LILYGO Official](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft-echo-lite&ref=openhardware.directory&product=lilygo-t-echo-lite&source=md-export) — $13.41

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft-echo-lite&ref=openhardware.directory&product=lilygo-t-echo-lite&source=md-export)
- [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2FXinyuan-LilyGO%2FT-Echo-Lite&ref=openhardware.directory&product=lilygo-t-echo-lite&source=md-export)

## Tags

`nrf52840`, `lora`, `meshtastic`, `lilygo`, `ble5`, `thread`, `zigbee`, `off-grid`, `low-power`

## Images

![LILYGO T-Echo Lite](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-echo-lite/d79fa887589c.jpg)
![LILYGO T-Echo Lite](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-echo-lite/e21046da7b10.jpg)
![LILYGO T-Echo Lite](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-echo-lite/35c53fac8a24.jpg)
![LILYGO T-Echo Lite](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-echo-lite/d347d4f4d169.jpg)
![LILYGO T-Echo Lite](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-echo-lite/74ce63396011.jpg)
![LILYGO T-Echo Lite](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-echo-lite/faa0caec72e3.jpg)
![LILYGO T-Echo Lite](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-echo-lite/3565fdbd5c84.jpg)
![LILYGO T-Echo Lite](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-echo-lite/5ceabf070ca8.jpg)

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