Certaines informations sont présentées en anglais.
À propos de moi
I would choose option 1 if the service includes prototype support. It communicates a clearer deliverable than "for Embedded Systems" and retains the important platform keyword.
If you're only providing PCB design files, use "Design" rather than "Develop" and avoid promising a prototype.
The main thing is to confirm whether the buyer wants a custom carrier/expansion board for the Nucleo or a standalone PCB built around the STM32N657 MCU. Those are differ... Plus d’infos