Saturn Telemetry Overlay

A clean, SpaceX-style telemetry overlay for your KSP streams.

We run live launch webcasts over at Saturn Aerospace, and got tired of faking the telemetry graphics in OBS by hand every time. So we built this instead: it pulls live data straight from your game through kRPC and shows it as a proper overlay, covering altitude, velocity, downrange distance, mission time, and stage info.

Set it as a Browser Source in OBS, resize it wherever you want, and it just runs in the background updating in real time while you fly.

What it does

• Live altitude, velocity, and downrange distance
• Mission elapsed time (T+ counting from liftoff)
• Stage and fuel status
• Apoapsis/Periapsis once you're in a stable orbit
• Fully transparent background, so it sits cleanly over your gameplay capture
• Mission name field so it actually looks like your launch, not a generic HUD

What it's not

This isn't an in-game mod. Nothing changes inside KSP itself. It's a small external tool that reads live data through kRPC and renders it as a webpage, which you then drop into OBS (or any software that supports browser sources). Think of it as a companion tool for streamers, not a gameplay mod.

Requirements

• Python 3
• The kRPC mod installed and running in your KSP save
• OBS (or similar streaming software with browser source support)

Full setup instructions, including the OBS side, are in the README.

Why we made this

We fly simulated launches for fun and stream them properly, countdown, commentary, booster landings, the lot. This is a tool we built for ourselves first. If it's useful to your stream too, that's the whole point of putting it up here.

Bugs, requests, or feedback: drop them in the comments or come find us on Discord.

Saturn Aerospace