Your VTOL Can't Park. Here's How to Fix It.

Let's be honest, your drone's 'Return to Home' is more of a suggestion. Landing somewhere in the correct postcode is fine for a hobbyist, but utterly useless when precision actually matters. You could remortgage your house for an RTK kit, or you could just use your eyes. Specifically, our eyes.

The Landmark Precision Landing System is a small box with a camera and a brain that tells your ArduPilot-powered VTOL exactly where to sit. It stares at a printed piece of paper—an AprilTag, if you want to be technical—and guides your craft down with centimetre-level accuracy. No expensive satellites, no complicated setup. Just a target and some clever code.

Naturally, it's not black magic. You'll need to plug it into a spare UART, give it enough power so it doesn't faint (~0.5A), and print the target without getting creative with the scaling. It also helps if the camera can, you know, *see*. Don't expect it to work miracles in the pitch black without a light. These are the reasonable trade-offs for not spending a fortune.

It’s the pragmatic fix for when 'close enough' isn't. If you want the full, unadulterated technical breakdown, you can find it in our original deep-dive post. Otherwise, just watch the video below and see for yourself.