SIMBLIPOpen Notebook

The notebook where your drawings become experiments

Sketch mechanics, wire circuits, build logic — then press Play. One canvas, real physics, real Kirchhoff, real waveforms. Everything editable while it runs.

Mechanics that obey you

Pendulums, springs, collisions — gravity and air drag are just variables you edit, even mid-swing.

Electricity you can see

Amber dashes are conventional current; blue dots are the electrons drifting the other way. Speed tracks the real amps.

010101AND

Logic in real time

Every pin wears its 0 or 1. Toggle inputs with a click while the clock runs.

Rigid Body

Draw it, don't place it

Freehand recognition turns sketches into circles, rects, springs and wires — meaning comes from behaviors.

k = 20

Springs on a leash of math

Stiffness is an expression. Type k = 20, plot ω₀ = √(k/m), then change k and watch both react.

Graphs that do algebra

Plot channels, your own formulas, phase portraits — with custom axes, scales and reference lines.

Draw → simulate

Sketch a shape, attach a Rigid Body — it falls, collides, spins. A zigzag stroke is already a spring.

Full circuit lab

Batteries, R/L/C, diodes, transistors, op-amps solved with real Kirchhoff analysis at 120 Hz.

Doodles are wires

Ink that touches a terminal conducts — watch conventional current and electron flow move through it.

Digital logic

Gates, adders, flip-flops, decoders — every pin shows its 0/1 live; click inputs while it runs.

Formulas everywhere

Every field takes an expression. Define g, k, R once — sweep them mid-simulation.

Probes & meters

Voltmeter, ammeter, probes and graphs with custom formulas, axes and reference lines.