Hello
I have now made a Underwater Housing to GoPro Hero 3,4 or 5 camera, Fits just fine on Bluerov2 after
i move the battery Enclosures A bit further back.
Rec and power/mode button is controlled by Arduino mini pro, i have hacked my gopro hero 3 with wire to Rec and power/mode button,sow you can Connect camera directly to two SSR relay.