In December 2025, this developer expanded hardware support for the nrfconnect/sdk-zephyr repository by enabling IEEE 802.15.4 wireless communication on the Seeed Xiao NRF54L15 board. They updated the device tree configuration in C to designate the flash controller as rram_controller and activate wireless features, integrating the board with the native Nordic/Zephyr stack. This work addressed low-power wireless mesh and IoT use cases, reducing integration effort for future applications. All changes were consolidated into a single, traceable commit, ensuring auditability and ease of review. The developer demonstrated depth in embedded systems, device tree configuration, and wireless communication protocols.