Nothing to install · nothing sent anywhere

Try Ohmwork in your browser

Six real lessons from Ohmwork's course, running on a real circuit solver. The voltages and currents you will see are solved, not scripted. Wire the circuit, press Run, and let the lesson check your work.

Wire it. Pick parts from the shelf and tap them onto the paper; wire pin to pin.
Run it. The solver works out every voltage and current, live. Probe with the meter.
Check it. Check my work reads the circuit you built, not answers to a quiz.

Choose a lesson

The full workshop

This is a significantly cut-down taster of Ohmwork, which is in development for Mac and Windows. The full workshop has 64 lessons across five courses — including six simulated Arduino boards that run your genuinely compiled sketches — plus an oscilloscope, fault-finding practice and much more.

The full workshop Hear about the release first

The taster needs JavaScript — it runs a live circuit solver in your browser. Nothing is sent anywhere; it simply cannot simulate without a script engine.

Press a part, then tap the canvas to place it. Wire by tapping pin to pin. Your work is saved in this browser as you go.

To wire round corners: tap a pin (the small red dot), tap each corner the wire should turn at, then tap the destination pin — or drag pin to pin for a straight run. Esc or ✕ cancels.

Select a part or wire and its buttons appear over the canvas: Rotate a quarter turn (R), Flip a two-pin part the other way round without losing its wiring (F), and Delete (the Delete key); the arrow keys nudge a part. Deleting a part leaves its wiring in place, each end tied off with a dot — seat the replacement's pins on the dots and they connect themselves. Drag a selected wire's square corner handles to reroute it. Tap a switch to throw it; tap the meter's SELECT to change range. To test a part with the ohms or continuity range, do it the bench way: make the circuit dead first (open the switch), then Run — Run wakes the meter, not just the battery, and the ohms range refuses a live loop. Alt+click a pin — or use the leg buttons in the part's panel — to lift that one leg out of circuit and back; the wiring never moves.

Drag empty canvas to move around; scroll or pinch to zoom; Ctrl+Z undoes any slip. While running, the Flow button shows the current as moving dots and the V button tints wires by voltage — both start off, so a fault-finding lesson stays a fair puzzle. A selected resistor's slider scrubs its value live, and Share copies a link to your circuit.

Try Ohmwork in your browser

01 Choose a lesson

02 The full workshop

The full workshop runs a real Arduino

Choose a lesson

The full workshop