Blog
Teaching a camera not to look at the sun
A camera built to watch the sky will eventually point at the sun. A battery-backed clock and the image itself keep the long lens off it, without leaving a blind spot.
Ethan Ulanov & Calvin Dobbs · 5 min readHearing a drone through a moving vehicle
A drone is not a sound, it is a structure. Recovering that structure from a vehicle that is itself one of the loudest things in the scene is the central engineering problem.
Ethan Ulanov & Calvin Dobbs · 5 min readWe stopped talking about detection range
Range is a proxy for time, and the conversion is unkind: 50% more range buys under two seconds against a target closing at 100 km/h. Fixing the question changed the architecture — and moved the camera out of the warning path entirely.
Ethan Ulanov & Calvin Dobbs · 10 min read