DigiSim Museum Open Simulator

The DigiSim Museum

Ten machines that built the modern world — running live in your browser. Not videos, not diagrams: working simulations where every gear ratio, electron, and laser fringe is computed from the real physics.

Free to visit · no install · open any exhibit and start turning the crank.

  1. Skeleton Regulator Clock — interactive 3D exhibit c. 1715
    Timekeeping

    Skeleton Regulator Clock

    A pendulum, a deadbeat escapement, and a gear train with nothing to hide.

    Enter exhibit
  2. Triode Vacuum Tube — interactive 3D exhibit 1906
    Electronics

    Triode Vacuum Tube

    Inside the glass: a heated cathode, a grid, and the birth of amplification.

    Enter exhibit
  3. Silent-Era Film Projector — interactive 3D exhibit c. 1915
    Cinema

    Silent-Era Film Projector

    A Geneva drive, a phase-locked shutter, and 16 still frames a second pretending to move.

    Enter exhibit
  4. One-Tube Radio — interactive 3D exhibit c. 1925
    Radio

    One-Tube Radio

    Tune the coil, heat the filament, and pull voices out of the air with one triode.

    Enter exhibit
  5. Field Typewriter, Cutaway — interactive 3D exhibit 1944
    Writing machines

    Field Typewriter, Cutaway

    Forty-three typebars, two shifts, a margin bell — every linkage exposed and working.

    Enter exhibit
  6. Pinwheel Mechanical Calculator — interactive 3D exhibit c. 1944
    Computing

    Pinwheel Mechanical Calculator

    Multiplication by cranked repetition — every carry rippling through real gears.

    Enter exhibit
  7. CRT Oscilloscope — interactive 3D exhibit c. 1955
    Instruments

    CRT Oscilloscope

    An electron beam steered by real plate physics, drawing waveforms on phosphor.

    Enter exhibit
  8. Cassette Walkman Transport — interactive 3D exhibit 1979
    Audio

    Cassette Walkman Transport

    A capstan, a slip clutch, and a flywheel — the mechanics that made music portable.

    Enter exhibit
  9. OMNIVOX 2000 CRT Console — interactive 3D exhibit c. 1982
    Computing

    OMNIVOX 2000 CRT Console

    An exposed-chassis CRT television wired to a cartridge console — phosphor and all.

    Enter exhibit
  10. LIGO Gravitational-Wave Detector — interactive 3D exhibit 2015
    Physics

    LIGO Gravitational-Wave Detector

    Two laser arms, a dark fringe, and a ripple in spacetime one ten-thousandth of a proton wide.

    Enter exhibit

From pendulums to gravitational waves

The collection runs in chronological order: it opens with a regulator clock settling time one escapement beat at a time, and closes with LIGO measuring a distortion of spacetime smaller than a proton. In between are the machines — tubes, gears, beams, and tape — that carried logic from brass to silicon. When you’re ready to build the next chapter yourself, the Logic Lab and Relay Lab are open.