Hey @precira
The OAK-FFC-IR isn’t compatible with the FFC-3P baseboard. The 3P doesn’t have the connectors and signals the IR module needs, so I think there isn’t really a way to make it work, even with soldering.
If you’d like to use the IR/dot projector, you’d need an OAK-FFC-4P R5 (or newer) baseboard.
Thanks,
Oskar