Microcontroller Prototype PCB Design

I’m ready to move my prototype from breadboard to a professionally-routed, manufacturing-ready printed circuit board. The core of the design will be a microcontroller, so I need a complete schematic and PCB layout that give me solid firmware flexibility while keeping the overall footprint compact.

Key features the board must support are integrated Bluetooth and a reliable USB interface for both power and data. Wi-Fi is not required right now; keeping the radio design focused on Bluetooth will help us hold down cost and complexity. Please route high-speed USB traces with impedance control and break out the microcontroller’s programming pins so I can flash firmware without extra fixtures.

Deliverables I’ll review before sign-off:
• Clean schematic in Altium, KiCad, or Eagle (whatever you normally use).
• PCB layout files plus Gerbers, drill data, and pick-and-place files.
• Complete BOM with manufacturer part numbers and at least one in-stock sourcing option per line item.
• Simple assembly drawing that labels connectors, test pads, and orientation-critical parts.

If you’re comfortable designing four-layer boards, planning for good RF isolation around the Bluetooth module or chip-antenna, and following USB-IF guidelines, I’d love to see examples of similar work you’ve done. Let’s turn this prototype into real hardware.