#1 Improv, #2 Deer Awareness, #3 High Altitude Balloon Path, #4 Camera Map, #5 MeasureGeo, article Finding pilots without emitting RF -- Combat Search and Rescue (CSAR) RF flashlight from space, on X Watch Agadez grow (be built), then handed back, to now. Northern Niger. Keep on eye on it!

#1 Improv#2 Deer Awareness#3 High Altitude Balloon Path#4 Camera Map#5 MeasureGeoArticle Finding pilots without emitting RF -- Combat Search a...On X Watch Agadez grow (be built), then handed back, to now. N...
Marshall Frith

marshallfrith.com

Tools for people who are outside, on a bad network.

Personal projects: satellite pictures, ATAK tools, and field software that runs on your own machine. Most of them you can try in the browser.

See the projects About me

Projects

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The latest clear Sentinel-2 pass over Starbase at Boca Chica, 2 September 2026 — launch tower, tank farm, and the beach.

Sentinel-2 Clear Days

When Did This Ground Change?

Live on the App Store as Sentinel-2 Clear Days. Draw a box, scrub nine years of Sentinel-2 over it, and get the date each pixel changed — with a threshold that was measured rather than chosen.

On the App Store →Try it in your browser →
#13 · ~31 visits (30d)SatelliteChange detectionApp Store
Thornton Gap near US 211 — orange hearing ring and blue downwind smell cone on the OSM woods map.

Deer Awareness

Ready for Deer Season — Hearing Lobe, Smell Cone, See Hint

Live on the App Store as Deer Awareness. A wind-biased hearing lobe, downwind smell cone, and a rough see hint for the woods. Export KML for Google Earth or TAK.

On the App Store →Try it in your browser →
#2 · ~172 visits (30d)FieldMapApp Store
Access bands over Norfolk — SAR swaths crossing the eastern US and the Atlantic, with the usable-incidence legend in the corner.

Overpass Predictor

The Satellite Pass Directly Overhead Is the One You Cannot Use

Predicts when a radar satellite can actually image a spot, which is not the same as when one flies over it. About a quarter of passes are usable, and the best-looking ones are the worst.

Try it in your browser →
#8 · ~44 visits (30d)SatelliteSARWorking
Clustered traffic cameras already plotted across Arlington and Northern Virginia, the largest cluster sitting on Washington DC.

Camera Map

A Camera That Needs a Password Can Never Be Handed to ATAK Directly

Maps 35,944 public cameras and re-publishes any of them as a stream ATAK, VLC or a recorder can open. The format ATAK uses for video has nowhere to put a username, which decides almost everything else about how it works.

Try it in your browser →
#10 · ~37 visits (30d)ATAKCamerasWorking
The 2.5-D wind column over Washington DC — barbs from the surface to 103,000 feet, colour by speed.

Windmaster

Winds Aloft to 103,800 Feet, Anywhere on Earth

Wind from the ground to 103,800 feet, anywhere. The holes in the ladder are interpolated and marked, then handed to ATAK, Google Earth, or anything that opens KML.

Try it in your browser →
#15 · ~30 visits (30d)WeatherATAKWorking
Charted depths already pulled for the St. Augustine inlet, colour-ramped inside a dashed box over the Matanzas River.

Depth

Live Bathymetry for Google Earth, ATAK, and a Chartplotter

Live water depth for any area you pick, exported for Google Earth, ATAK, QGIS or a chartplotter.

Try it in your browser →
#18 · ~26 visits (30d)MaritimeATAKWorking
A predicted balloon track already drawn from Boulder northeast across the Front Range plains, with launch, burst and landing pins.

High Altitude Balloon Path

The Landing Pin Is an Estimate

Predicts where a high-altitude balloon flies and where it comes down, then hands you the track for ATAK. Estimates only.

Try it in your browser →
#12 · ~33 visits (30d)WeatherATAKWorking
Morse with SOS typed and Melody selected, ready to hide the code under a beat.

Morse

Morse Hidden in a Beat, In Earshot

A basic house loop carries the Morse as a quiet voice under the kick. Anyone standing there hears a tune, not dits. That is the send you can play out loud.

Try it in your browser →
#3 · ~114 visits (30d)RadioBluetoothWorking
Starship Lander on Level 1 Hop, ready to drop belly-first toward the ring.

Starship Lander

Nobody Could Land It, and the Difficulty Was Never the Problem

A browser game where a Starship-shaped vehicle falls belly-first at terminal velocity, flips, and lands on a ring or on a droneship deck heaving in a swell. It was unlandable for weeks, and never because it was hard.

Try it in your browser →
#6 · ~53 visits (30d)GamesSimulationWorking

If you are tired of playing with ATAK, land a Starship.

Who this is

I like making tools that help you see the world a little more clearly — whether that is a satellite pass overhead, the wind at 80,000 feet, a ship on the water, or the bottom under it. Space, air, sea, subsea: same itch. What is actually there, and can I hold the answer in my hand.

More about me →