# LuckFox Lyra Ultra

> Feature-rich Linux SBC based on Rockchip RK3506B with triple-core ARM Cortex-A7 @ 1.2GHz + Cortex-M0, 512MB DDR3L, 8GB eMMC, 100M Ethernet, optional WiFi 6/BT 5.2, MIPI DSI display, PoE header, and 33 GPIO pins.

## Quick Facts

- **Brand:** LuckFox
- **Board Type:** linux-sbc
- **Price:** ~$33.99
- **Product Readiness:** developer
- **CPU:** Rockchip RK3506
- **CPU Architecture:** ARM Cortex-A7 + Cortex-M0
- **CPU Cores:** 3+1
- **RAM:** 512MB DDR3L
- **Flash:** 8GB eMMC
- **USB:** USB-C 2.0
- **Power:** 5V
- **Operating Voltage:** 3.3V

## Connectivity

- **Ethernet:** 10/100 Mbps

## Open Source

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

## Compatible Firmware

buildroot

## Use Cases

- hmi-panel
- embedded-linux

## Components

- **RK3506** (soc): Triple-core ARM Cortex-A7 @ 1.2GHz + Cortex-M0 MCU with built-in audio/video codec — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.rock-chips.com%2Fuploads%2Fpdf%2F2024.8.9%2FRockchip%2520RK3506%2520Datasheet%2520V1.0-20240729.pdf&ref=openhardware.directory&product=luckfox-lyra-ultra&source=md-export)
- **CH182H2** (ethernet-phy): 10/100M Ethernet PHY chip — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.wch-ic.com%2Fproducts%2FCH182.html&ref=openhardware.directory&product=luckfox-lyra-ultra&source=md-export)
- **CH334F** (usb-hub): USB 2.0 hub controller expanding 1 upstream to 4 downstream ports — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.wch-ic.com%2Fproducts%2FCH334.html&ref=openhardware.directory&product=luckfox-lyra-ultra&source=md-export)

## Protocols

- **UART**
- **SPI**
- **I2C**
- **PWM**
- **CAN**
- **ADC**
- **MIPI DSI**
- **USB 2.0**

## Accessories

- mipi-dsi-display
- poe-module

## Available Software

- **[LuckFox Lyra SDK](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2FLuckfoxTECH%2Fluckfox-pico&ref=openhardware.directory&product=luckfox-lyra-ultra&source=md-export)**: Official Buildroot SDK for LuckFox boards

## Description

# LuckFox Lyra Ultra

The LuckFox Lyra Ultra is the top-spec board in the Lyra family. Based on the Rockchip RK3506B, it features a triple-core ARM Cortex-A7 @ 1.2GHz plus Cortex-M0 MCU, 512MB DDR3L, 8GB eMMC, 100M Ethernet, optional WiFi 6 / Bluetooth 5.2, MIPI DSI display output, PoE module header, and 33 I/O pins.

## Key Features

- **RK3506B SoC**: 3x ARM Cortex-A7 @ 1.2GHz + Cortex-M0 MCU
- **Memory**: 512MB DDR3L + 8GB eMMC
- **Ethernet**: 10/100M RJ45 port (CH182H2 PHY) with optional PoE module
- **Display**: MIPI DSI 2-lane (up to 1280x800 @ 60Hz), RPi DSI-compatible
- **Wireless** (W variant): WiFi 6 (2.4GHz) + Bluetooth 5.2/BLE
- **USB**: 2x USB OTG 2.0 (base) or 1x USB OTG + 2x USB HOST via CH334F HUB (W variant)
- **Audio**: Speaker header (MX1.25 2P, 8 ohm 1W) + built-in audio codec
- **GPIO**: 29 Rockchip Matrix IO + 4 GPIO pins (98 multiplexed functions)
- **RTC**: Battery connector for real-time clock

## Variants

| Variant | WiFi/BT | USB Config |
|---------|---------|------------|
| Ultra | No | 2x USB OTG 2.0 |
| Ultra W | WiFi 6 + BT 5.2 | 1x OTG + 2x HOST (via HUB) |

## Software Support

Runs Buildroot Linux with full SDK support. Compatible with Raspberry Pi DSI displays and LVGL-based HMI applications.

## Where to Buy

- [Waveshare](https://openhardware.directory/r?to=https%3A%2F%2Fwww.waveshare.com%2Fproduct%2Fluckfox%2Fboards-modules%2Fluckfox-lyra-ultra.htm&ref=openhardware.directory&product=luckfox-lyra-ultra&source=md-export) — $33.99

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Fwww.waveshare.com%2Fproduct%2Fluckfox%2Fboards-modules%2Fluckfox-lyra-ultra.htm&ref=openhardware.directory&product=luckfox-lyra-ultra&source=md-export)
- [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2FLuckfoxTECH%2Fluckfox-pico&ref=openhardware.directory&product=luckfox-lyra-ultra&source=md-export)
- [wiki](https://openhardware.directory/r?to=https%3A%2F%2Fwiki.luckfox.com%2FLuckfox-Lyra%2F&ref=openhardware.directory&product=luckfox-lyra-ultra&source=md-export)

## Tags

`linux`, `sbc`, `rockchip`, `rk3506`, `arm`, `cortex-a7`, `cortex-m0`, `ethernet`, `mipi-dsi`, `emmc`, `poe`, `wifi6`, `audio-codec`, `multi-core`

## Images

![LuckFox Lyra Ultra](https://nbg1.your-objectstorage.com/openhardware-directory/entities/luckfox-lyra-ultra/2b849d2fa912.jpg)
![LuckFox Lyra Ultra](https://nbg1.your-objectstorage.com/openhardware-directory/entities/luckfox-lyra-ultra/93516a3dfed8.jpg)

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