Hardware

Reference material for FREE-WILi 2's physical hardware: the GPIO pinout, the physical connectors around the case, and the Orca expansion module system.

• Pinout — the 20-pin GPIO header and 10-pin analog header, pin by pin.
• Connectors — every physical port on the case and what it's for.
• Orca modules — the expansion module concept and the modules currently available.

For the chips and subsystems that make up the device as a whole — the two RP2350 processors, the FPGA, the radios, the sensors — see What FREE-WILi 2 is in Start Here; this section goes one level deeper, into the pins and ports themselves.