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From circuit idea to soldering bench.

Plan, understand and build perfboard and stripboard circuits in your browser. Put every part and connection in place before you pick up the soldering iron.

Try an exampleStart a boardLearn the basics

No account needed to edit, simulate or download a backup.

Padwisp editor showing the editable 555 blinker, its board wiring and component properties.
The 555 blinker, open in the real editor. Make it your own.

Work it out on the board.

A circuit is more than a drawing. Follow the connections all the way to the build.

  1. Place the parts

    Choose a board, add components and rotate them onto the hole grid. Use perfboard or horizontal or vertical copper strips.

  2. Inspect connections

    Trace connected pads, add wires and solder paths, and cut strips where needed. Generate a schematic from your board’s actual connections.

  3. Simulate

    Configure a voltage source, choose probes and watch voltage and current traces. Check what changes when you edit a component value.

  4. Print and build

    Open Build guide for the parts list and mirrored solder-side SVG. Print at actual size and check the 50 mm scale before building.

A 555 LED blinker in Padwisp with the simulation panel showing voltage and LED current traces.
A 555 LED blinker with simulated voltage and LED current traces. This is a digital preview, not a photograph of a tested physical build.

Circuit Library: a place to start.

Three editable examples. Open one without signing in, then explore its parts and wiring.

Bridge rectifier

Explore low-voltage AC, diode polarity and capacitor smoothing. Use an isolated low-voltage source for a physical build, never mains.

Open in editor

These are editable example projects. Physical build reports and full guided tutorials are still to come.

Learn the basics.

Try this short exercise with the 555 blinker:

  1. Open the Simulation tab in the toolbar and press Play to see the scope.
  2. Pause, close the simulation panel and select resistor R3 on the board.
  3. Change Resistance (Ω) in Properties, then run the simulation again and compare the traces.
  4. Open Project settings and choose Download backup to keep your edited project.

For component tutorials, select a part and open its guide in Properties. Try the transistor switch next.

At the workbench.

Adding and editing
Press A or the toolbar + to browse components. Select a part to edit its value. Project settings controls board size, type and backups.
What connects?
Wire endpoints and explicit bend anchors connect to pads. Insulated wire crossings do not. Bare solder paths join covered pads and touching solder paths. Strip cuts break the native copper connection.
Before soldering
Check the real part’s datasheet, pin order, polarity, lead spacing and ratings. Some library parts use adapters or off-board wiring. Check the mirrored view and print scale.

A useful check before you build.

Built-in simulation supports modeled analog components and 555 circuits, plus supported behavioral device models. It uses your board’s connections. Unsupported parts, invalid values or missing references can prevent a run.

Models simplify real devices. Simulation and schematic drawing verification do not guarantee a working physical circuit or check every rating, tolerance, thermal effect or assembly mistake. Verify your parts and test the physical build.

Your project, your copy.

Editing, simulation, JSON backups and build exports are available without an account. Browser recovery helps resume work on this device, but clearing browser data can remove it. Download a backup for a copy you control.

An optional account lets you keep private cloud projects and reopen them after signing in. Save your guest work from the projects dashboard. Examples are starting points; edits to your copy do not update the original example.

Open your projects