Opal’s second camera is the Tadpole, a tiny webcam for laptops The Tadpole is meant to just clip right over top of your laptop’s webcam. | Image: OpalTwo years ago, Opal launched a camera with a tweet. (They were still called tweets back then.) It was the middle of a global pandemic, a work-from-home revolution, and a truly brutal time to start a hardware company — and Opal suddenly had tens of thousands of…