Simon C. Marshall

I'm also just a boy, standing in front of an AGI, asking it not to kill him.

Below is a simple visualisation of the objects passing over London (which will slowly pick up orbital inaccuracies as I forget to keep it updated).

Everything else Starlink Higher orbits London

Loading element sets…

Below are a wide range of my personal projects. They are mostly there for me to access but you’re welcome to enjoy them too.

Personal projects

I eat too much sugar

Self-tracking · Feb 2024 – Aug 2026 · 774 recorded days

Two and a half years of data on every sweet thing I ate.

Total mass of sweets
79.4 kg 25.5 kg chocolate
Estimated energy
355,112 kcal 459/day
Estimated sugar
32.0 kg 41 g/day
Longest choc streak
39 days longest gap 8

Read the report

Arrivals

Live data · Sep 2026 · a subproject of the London display

Ten minutes of the Underground, drawn as arrivals rather than as trains, on a Tube map laid out by hand.

Window
10 min Saturday, 17:40 BST
Arrivals drawn
624 one every 1.1 s
Stations
64 42 of them interchanges
Lines
11 every tracked tube line

Open the map

Satellites Over Head

Live data · Sep 2026 · built for a £10 display

Everything passing over southern England, propagated in the browser and drawn at 320×240 — the resolution of the screen it is meant to end up on.

Objects tracked
11,549 of 16,124 catalogued
Overhead at once
21 three quarters of them Starlink
Crossing per day
9,583 over southern England
Frame
686 km across 2.14 km per pixel

Open the display