4 open source Nordic nRF boards

Nordic Semiconductor's nRF52, nRF53, nRF54 and nRF91 wireless SoCs — Bluetooth LE, Thread, Zigbee and LTE-M. Every board here is a public GitHub project with its KiCad files, read for size, layers and parts. Pick one close to your design and simulate its firmware on HardLabs before you build it.