slop.boutique

A lab for computation and intelligence as material and medium. Run by Manuel and Ramon.

036 · 23 October 2026 · digital-twins · simulation · 3d

Takt Workbench

Script a workstation and its operators in JavaScript, then watch the plan run in 3D with a two-handed timeline of every gesture.

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Full-bleed render of the Blower P-230 station: an operator in blue gloves fastens a fan into a housing under the stack light, with the projector showing Fasten on the bench

In early access for subscribers until 22 November 2026. Subscribe to run it now.

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A workbench for scripting people at work. You write a small JavaScript scene (benches, bins, trays, tools, parts and operators) and a standard operating procedure of verbs like pick, place, fasten and drive; Takt plans it, runs it as a discrete-event simulation with two hands per operator, and draws it in 3D with a timeline of every gesture.

  • Script, plan, run, render: the editor reruns as you type. Every lambda is coloured by the stage it runs at (build, live or frame), so you can see what a change will cost.
  • Two hands and derived order: left and right hands get their own tracks; hold() stretches while the other hand works, with(tool) fetches and returns tools, and the order comes from what each step reads and writes.
  • Faults and live logic: rewrite the plan with skip, swap, inject and substitute; add interrupts, cross-thread rework, andon lights that spawn a material handler, and buffers between stations that block and starve.
  • Parameters from the script: int, num, percent, bool, choice, seed, colour and trigger controls appear in a panel, each marked with the stage it is read at.
  • See it from anywhere: cameras declared in the script plus a free orbit, overlays for boxes, features, trails and the HUD, and click a thing in the viewport to find its line.
  • Run views: Timeline, Plan, Trace, World state, per-frame Labels with bounding boxes (for synthetic datasets) and Problems.

Twenty-six presets come with it, in seven groups from Basics to Demos: Hello bench, Four screws, Two hands, Elastic hold, Fault rewrites, Andon and handler, Leak test line, PC refurbishment, Blower P-230 station, Glue station, Kitting cell, Inspection and sort, Dataset variant and A 20-minute shift. The 3D view uses three.js.

Leak test line render: an operator at the test rig with a glass guard and two pressure gauges, a rollerway leading from the assembly bench
Leak test line render: an operator at the test rig with a glass guard and two pressure gauges, a rollerway leading from the assembly bench
The full workbench for the Blower P-230 station: preset list, scene.takt.js, the 3D viewport with HUD and boxes on hands, parts and features, parameters and a two-actor timeline
The full workbench for the Blower P-230 station: preset list, scene.takt.js, the 3D viewport with HUD and boxes on hands, parts and features, parameters and a two-actor timeline
Kitting cell render from above: a wall of yellow and blue bins and an operator in white gloves picking into a kit tray
Kitting cell render from above: a wall of yellow and blue bins and an operator in white gloves picking into a kit tray
Every parameter type: seed, choice, bool, colour, int, num and percent controls and a trigger generated from the script, each marked with the stage it is read at, beside a timeline with a drop
Every parameter type: seed, choice, bool, colour, int, num and percent controls and a trigger generated from the script, each marked with the stage it is read at, beside a timeline with a drop
Glue station render: a seated operator in a pink shirt holds a spine part over a wood-topped bench with a row of white cups
Glue station render: a seated operator in a pink shirt holds a spine part over a wood-topped bench with a row of white cups
Timeline for Two hands, derived order: the left hand picks and starts bolts while the right hand drives them, three cycles
Timeline for Two hands, derived order: the left hand picks and starts bolts while the right hand drives them, three cycles
Three seeds of the Dataset variant preset side by side: bench surface, floor, lighting, operator look and handedness all change
Three seeds of the Dataset variant preset side by side: bench surface, floor, lighting, operator look and handedness all change
Dataset variant with the Labels tab open: per-frame JSON with the camera, image size and a bounding box for every object, next to the script and the boxed viewport
Dataset variant with the Labels tab open: per-frame JSON with the camera, image size and a bounding box for every object, next to the script and the boxed viewport
Buffer between stations render: two operators side by side at their benches
Buffer between stations render: two operators side by side at their benches
A 20-minute shift: 737 ops over 1200 simulated seconds, with cycles, cross-thread labels and handler refills along a zoomed-out timeline
A 20-minute shift: 737 ops over 1200 simulated seconds, with cycles, cross-thread labels and handler refills along a zoomed-out timeline
Overhead close-up of the blower station: a gloved hand works on a fan seated in its blue housing, spare fans on the rack
Overhead close-up of the blower station: a gloved hand works on a fan seated in its blue housing, spare fans on the rack
Debug overlays from the Cameras preset: hand box, held-part tag and feature markers on every PCB hole while the right hand seats an M3x8 screw
Debug overlays from the Cameras preset: hand box, held-part tag and feature markers on every PCB hole while the right hand seats an M3x8 screw
Inspection and sort render: an operator picks a part from a tray beside a magnifier ring and parts waiting on a mat
Inspection and sort render: an operator picks a part from a tray beside a magnifier ring and parts waiting on a mat