[ lab ]the bench
Lab
The working tools: a slicer cheat-sheet, the code workbench, the cube simulator, nine engineering simulations, and the API. Calculator and console stay in the bar on every page.
Simulations [ nine engineering tools ]
PID tuner →Tune a real plant against saturation and anti-windup. Rise time, overshoot, settling time, steady-state error. Motion / stepper planner →Trapezoidal and S-curve moves, converted to steps through microstepping and a gear ratio. Beam deflection →Cantilever, simply-supported or fixed-fixed, with a safety factor against six material presets. RC/RLC filter →Bode magnitude and phase, plus the step response, for low-pass, high-pass and band-pass. Gear train / planetary →Ratio, direction, output speed and torque - spur trains and planetary sets, checked against their assembly condition. Stepper torque/speed →A first-order pull-out torque curve: flat to a corner speed, then falling as back-EMF eats the voltage headroom. Battery / power budget →Build a duty cycle out of phases and get a runtime in hours and days. Thermal →Junction temperature and margin from a resistance chain, plus the RC warm-up transient. Circuit basics →Ohm's law, a loaded divider, an LED resistor and an RC charge curve, with E-series hints.
Bench [ use these ]
Workbench →Scratch editor with highlighting, a sandboxed preview, and snippets from this project's real code. Slicer presets →Filament temperatures, cooling, and the two settings that actually decide whether a structural part survives. Cube simulator →Live LQR on a reaction-wheel cube. Drag sliders, starve the motor, then open the build manual.
Interface [ how it talks ]
Calculator and console sit in the top bar, not here. The toolkit drawer and the backquote console are on every page, so they do not need a directory of their own.