DIY ‘2 Billion FPS’ Camera Captures Light’s Motion — One Pixel at a Time
DIY ‘2 Billion FPS’ Camera Captures Light’s Motion — One Pixel at a Time YouTuber and engineer Brian Haidet (aka AlphaPhoenix) built a camera rig that can visualize a laser beam moving at the speed of light by effectively recording at around 2 billion frames per second. The catch: it captures one pixel at a time and then stitches those samples into a full video, trading spatial capture for extreme temporal resolution. How it works One-pixel scanning: The system records a single pixel sequentially across the scene, then tiles those pixel “videos” to reconstruct a full frame. Garage-friendly hardware: A gimbal-mounted mirror, two tubes, a simple lens, a light sensor, and Python code orchestrate the scan and capture. Frame scale: In the demo, light advances roughly ~6 inches (15 cm)…
