Project Overview:

This is an open-source, ultra-slim leverless fightstick controller PCB (Flatbox Rev 5 design by jfedor2) powered by an RP2040 microcontroller for fighting game inputs.

Manufacturing & Assembly Requirements:

1. PCB Specs: 1.6mm thickness, standard FR-4, 2-layer board.

2. SMT Assembly: Please perform single-sided SMT assembly on the top layer components as defined in the provided BOM and Pick-and-Place (CPL) files.

3. Key Onboard Components:

  - RP2040 Microcontroller chip and supporting passives (resistors, capacitors, crystal oscillator, diodes).

  - USB Type-C port for power and data connection.

  - Kailh Choc Low-Profile Hot-Swap Sockets (PG1350) for mechanical keyboard switches.

  - Small tactile push buttons for auxiliary functions (Start, Select, Home, etc.).

Engineering & Quality Check Notes:

- Please verify component orientation (Pin 1 location) for the RP2040 chip and diode polarity against the CPL file before soldering.

- Ensure the Kailh Choc hot-swap sockets are soldered completely flat against the board surface to allow smooth switch insertion post-assembly.

- Please provide a DFM (Design for Manufacturability) proof/render for approval prior to running full production.