This tool lets you test firmware without the hardware headaches

LabWired is an open-source firmware simulation platform created by Andrii Shylenko that lets engineers test compiled MCU firmware without physical hardware. It models entire development boards—including Arm Cortex-M, RISC-V, and Xtensa LX processors—plus peripherals like sensors and displays, capturing UART/bus output and register states for consistent testing.

For embedded developers, this eliminates the slow cycle of flashing firmware to real boards and debugging 'dark LED' failures. It enables rapid testing across multiple hardware configurations in CI pipelines, with full transparency about simulation limitations via a 'Fidelity Ledger.' The takeaway: LabWired dramatically accelerates firmware validation while providing reproducible, hardware-agnostic testing workflows.