# T-Echo Lite (LILYGO)

> A small nRF52840 LoRa node with an e-paper screen and a plug-in GPS module, made for low-power Meshtastic.

- **Category:** Radio & mesh
- **Availability:** Listed by maker
- **Price:** US$27.36 (at lilygo.cc), checked 2026-09-17
- **Good for:** Build a long-running Meshtastic node that sips battery.
- **You'll need:** A battery and an enclosure; the Lite ships as boards.
- **Trade-off:** Screen size and battery are not specified.
- **Page:** https://gadgets.sh/devices/lilygo-t-echo-lite/

## Where to buy

| Shop | Status | Link |
|---|---|---|
| LILYGO | Orderable | https://lilygo.cc/products/t-echo-lite?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=lilygo-t-echo-lite&utm_content=api |
| OpenELAB | Orderable | https://openelab.io/products/lilygo-t-echo-lite-meshtastic?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=lilygo-t-echo-lite&utm_content=api |
| Amazon (LILYGO store) | Orderable | https://www.amazon.com/dp/B0FKBJV134?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=lilygo-t-echo-lite&utm_content=api |
| Rokland | Sold out at Rokland | https://store.rokland.com/products/lilygo-t-echo-lite-nrf52840-e-paper-lora-device-ext-antenna-us915-h778-a?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=lilygo-t-echo-lite&utm_content=api |

## Blueprint

**Open hardware.** LILYGO's T-Echo-Lite repo publishes full KiCad source (schematic+PCB+project) for the core board plus PDF schematics and STL enclosure files.

### Design files

- schematic: [T-Echo-Lite-Core V1.0 KiCad schematic](https://github.com/Xinyuan-LilyGO/T-Echo-Lite/blob/main/project/T-Echo-Lite_V1.0/T-Echo-Lite-Core_V1.0/kicad/T-Echo-Lite-Core_V1.0.kicad_sch) (KiCad)
- pcb: [T-Echo-Lite-Core V1.0 KiCad PCB](https://github.com/Xinyuan-LilyGO/T-Echo-Lite/blob/main/project/T-Echo-Lite_V1.0/T-Echo-Lite-Core_V1.0/kicad/T-Echo-Lite-Core_V1.0.kicad_pcb) (KiCad)
- schematic: [T-Echo-Lite V1.0 full schematic (PDF)](https://github.com/Xinyuan-LilyGO/T-Echo-Lite/blob/main/project/T-Echo-Lite_V1.0/T-Echo-Lite_V1.0.pdf) (PDF)
- enclosure: [T-Echo-Lite enclosure shells (STL)](https://github.com/Xinyuan-LilyGO/T-Echo-Lite/tree/main/structure) (STL)

### Source repositories

- [Xinyuan-LilyGO/T-Echo-Lite](https://github.com/Xinyuan-LilyGO/T-Echo-Lite) — hardware, ★15

### Key parts

| Part | Role | Datasheet |
|---|---|---|
| nRF52840 | MCU + BLE/Thread/Zigbee | https://www.nordicsemi.com/Products/nRF52840 |
| GDEM0122T61 | e-paper display panel | https://github.com/Xinyuan-LilyGO/T-Echo-Lite/blob/main/information/GDEM0122T61.pdf |
| ICM20948 | IMU | https://github.com/Xinyuan-LilyGO/T-Echo-Lite/blob/main/information/ICM20948.pdf |
| ES8311 | audio codec | https://github.com/Xinyuan-LilyGO/T-Echo-Lite/blob/main/information/ES8311.pdf |
| Quectel L76KB-A58 | GNSS | https://github.com/Xinyuan-LilyGO/T-Echo-Lite/blob/main/information/L76KB-A58.PDF |

_Notes:_ This is the most open device in the batch: real .kicad_sch/.kicad_pcb/.kicad_pro files verified in the tree (project/T-Echo-Lite_V1.0/T-Echo-Lite-Core_V1.0/kicad/), not just PDFs. There is also a separate KeyShield PDF-only sub-project.

### Raw source files

Direct links an agent or KiCad can open (the viewer on the page reads the same files).

- KiCad project **T-Echo-Lite-Core V1.0 KiCad schematic** (Xinyuan-LilyGO/T-Echo-Lite): [T-Echo-Lite-Core_V1.0.kicad_pro](https://raw.githubusercontent.com/Xinyuan-LilyGO/T-Echo-Lite/main/project/T-Echo-Lite_V1.0/T-Echo-Lite-Core_V1.0/kicad/T-Echo-Lite-Core_V1.0.kicad_pro), [T-Echo-Lite-Core_V1.0.kicad_sch](https://raw.githubusercontent.com/Xinyuan-LilyGO/T-Echo-Lite/main/project/T-Echo-Lite_V1.0/T-Echo-Lite-Core_V1.0/kicad/T-Echo-Lite-Core_V1.0.kicad_sch), [T-Echo-Lite-Core_V1.0.kicad_pcb](https://raw.githubusercontent.com/Xinyuan-LilyGO/T-Echo-Lite/main/project/T-Echo-Lite_V1.0/T-Echo-Lite-Core_V1.0/kicad/T-Echo-Lite-Core_V1.0.kicad_pcb)
- 3D model (STL, 0.3 MB): [Full assembly](https://raw.githubusercontent.com/Xinyuan-LilyGO/T-Echo-Lite/main/structure/%E6%80%BB%E8%A3%85.stl)
- 3D model (STL, 0.2 MB): [Bottom shell](https://raw.githubusercontent.com/Xinyuan-LilyGO/T-Echo-Lite/main/structure/%E4%B8%8B%E5%A3%B3.stl)
- 3D model (STL, 0.1 MB): [Top shell](https://raw.githubusercontent.com/Xinyuan-LilyGO/T-Echo-Lite/main/structure/%E4%B8%8A%E5%A3%B3.stl)

## Specifications

### Core hardware

| | |
|---|---|
| Processor | nRF52840 · 1 MB flash · 256 KB RAM |
| Display | E-paper (size not stated on the product page) |
| Radios | LoRa · Bluetooth 5 · Thread · Zigbee · 802.15.4 · L76K GPS expansion module |
| Power | Battery measurement on board; capacity not stated |

### Details from the product page

| | |
|---|---|
| Why nRF52840 | The maker describes LoRa + nRF52840 + e-paper as its lowest-power combination |
| In the box | Core board, L76K GPS expansion module, external antenna |
| Development | Arduino, VS Code |

### Buying

| | |
|---|---|
| Price | US$27.36 on lilygo.cc |
| Availability | In stock on the day of review |

## Documentation

- [Maker product page](https://lilygo.cc/products/t-echo-lite)
- [LILYGO GitHub organisation](https://github.com/Xinyuan-LilyGO)
- [LILYGO FAQ and support](https://lilygo.cc/pages/faqs)

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Source: gadgets.sh · https://gadgets.sh/devices/lilygo-t-echo-lite/ · JSON: https://gadgets.sh/api/v1/devices/lilygo-t-echo-lite.json