Luckfox Lyra Zero W Micro Linux Board w/ RK3506B, Wi-Fi 6, BT 5.2

The board primarily runs embedded Linux distributions provided by Luckfox, based on a mainline Linux kernel. You can build your own system using the official SDK and toolchain. It is not typically used with real-time operating systems (RTOS) on the A7 cores, though the Cortex-M0 co-processor can be programmed separately for real-time tasks.

The module features onboard antenna switching circuitry. To use an external antenna, you typically need to configure a GPIO control signal via software to switch the RF path from the internal PCB antenna to an external IPEX connector (if present on your board variant) or a soldered antenna pad. Consult the board's schematic and hardware guide for the specific control pin and recommended antenna impedance (50 ohms).

Direct programming via the Arduino IDE is not standard, as this is a Linux-based board. Development is done primarily in C/C++ using the provided Linux SDK, cross-compilation toolchain, and build systems like Buildroot or Yocto. However, you can program the onboard Cortex-M0 co-processor using traditional embedded toolchains if its firmware interface is exposed.

Power is supplied via the USB-C port at 5V. Typical operating current depends on CPU load and wireless activity but can range from a few hundred mA to over 1A under full load. For power-sensitive applications, you can utilize the Linux CPU frequency scaling and Wi-Fi/Bluetooth sleep modes. Ensure your USB power adapter or host port can provide a stable 5V/2A for reliable operation.

GPIOs are accessed through the standard Linux sysfs interface or libraries like libgpiod. The Rockchip Matrix IO means each physical pin can be configured for multiple alternate functions (like UART, I2C, SPI, PWM). You must refer to the board's device tree source (DTS) pinmux configuration to understand the mapping. The 40-pin header is Raspberry Pi HAT compatible, but the signal multiplexing is specific to the RK3506B.