Import & Export

Import & Export #

Breadpad works with industry-standard files so you can share circuits and reuse existing SPICE work.

File formats #

Breadpad document (.breadpad) #

The native package format. It stores the full circuit — layout, connections, component values, probes, and simulation settings — and is identical across all platforms. Any .breadpad file opens for free, including files made by Premium subscribers.

SPICE netlists (.spice, .cir) #

Breadpad opens PSPICE and LTspice netlists and runs the full simulation. You can also view the SPICE netlist that Breadpad generates from your breadboard in the SPICE Shell.

Importing #

Open a .spice or .cir file to simulate it directly. Supported elements include basic components (R, L, C), semiconductors (D, Q, M, J), voltage/current sources, .model definitions, and .subckt subcircuits.

If an import fails, remove vendor-specific directives, make sure every model and subcircuit is defined before it’s used, and prefer SPICE3-compatible syntax.

Exporting #

ExportWhat it isTier
Bill of Materials (CSV)Part number, quantity, component, and value summaryFree
SnapshotAn image of your breadboard, annotatable with Apple PencilFree
SPICE netlistThe generated netlist, viewable in the SPICE ShellFree
Simulation data (CSV)Time- or frequency-domain results for Excel/MATLAB/PythonPremium
Audio (WAV)Export an audio source as a .wav filePremium

Bill of Materials #

The BOM aggregates identical parts and reports a count of each — useful for ordering components and documenting a build.

Simulation data (Premium) #

Export the plotted vectors from a transient or AC run as CSV for analysis in other tools.

Sharing #

Share circuits through the system share sheet — AirDrop, Messages, Mail, the Files app, and cloud storage (iCloud, Google Drive, OneDrive, Dropbox). Store .breadpad files in iCloud Drive to sync them across your devices.

See Also #