# LILYGO T-Radar

> LILYGO T-Radar is a radar sensor expansion module based on the Acconeer A121 pulsed coherent radar, designed for presence detection and distance measurement with LILYGO motherboards.

## Quick Facts

- **Brand:** LILYGO
- **Board Type:** sensor-module
- **Price:** ~$15.43
- **Product Readiness:** developer
- **CPU:** Acconeer A121 (60GHz pulsed coherent radar)
- **CPU Architecture:** Acconeer proprietary
- **Flash:** N/A (sensor module)
- **Power:** 3.3V
- **Operating Voltage:** 3.3V

## Open Source

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

## Use Cases

- presence-detection
- distance-measurement
- home-automation
- industrial-sensing

## Components

- **A121** (radar-sensor): Acconeer A121 pulsed coherent radar chip at 60 GHz, supports presence detection, distance measurement, and motion sensing over SPI — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fdocs.acconeer.com%2Fen%2Flatest%2Fdetectors%2Fa121%2Findex.html&ref=openhardware.directory&product=lilygo-t-radar&source=md-export)

## Protocols

- **SPI**

## Description

## Overview

The LILYGO T-Radar is a compact radar sensor module built around the Acconeer A121 pulsed coherent radar chip operating at 60 GHz. It is designed to be used with other LILYGO motherboards that provide sufficient external GPIO. The module enables contactless presence detection, distance measurement, and motion sensing without the interference limitations of PIR or ultrasonic sensors. It connects over SPI and is fully supported by the Acconeer SDK and open-source Python and embedded libraries.

## Where to Buy

- [LILYGO Official](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft-radar&ref=openhardware.directory&product=lilygo-t-radar&source=md-export) — $15.43

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft-radar&ref=openhardware.directory&product=lilygo-t-radar&source=md-export)
- [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2FXinyuan-LilyGO%2FT-Radar&ref=openhardware.directory&product=lilygo-t-radar&source=md-export)
- [wiki](https://openhardware.directory/r?to=https%3A%2F%2Fdocs.acconeer.com%2Fen%2Flatest%2Fdetectors%2Fa121%2Findex.html&ref=openhardware.directory&product=lilygo-t-radar&source=md-export)

## Tags

`radar`, `acconeer`, `a121`, `presence-detection`, `60ghz`, `sensor-module`

## Images

![LILYGO T-Radar](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-radar/0e6b2089d52f.jpg)
![LILYGO T-Radar](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-radar/9595ef5a94af.jpg)
![LILYGO T-Radar](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-radar/cc593e4de636.jpg)
![LILYGO T-Radar](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-radar/fd80f800b79a.jpg)
![LILYGO T-Radar](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-radar/b1da77db7a10.jpg)
![LILYGO T-Radar](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-radar/aa15f39401df.png)

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