Features Bastion Circuit Designer
Draw a circuit, run it, and watch the current flow. Simulation, instruments, microcontrollers and an AI co-pilot in one desktop app.
Live simulation
The solver runs while you build, and the current flows along the wires.

Real SPICE too
ngspice is built in, and the two solvers can be compared on the same circuit.
Instruments
An oscilloscope, a multimeter and an 8-channel logic analyzer.

Analysis
AC sweep with a Bode plot, Monte Carlo tolerance runs and a SPICE linter.

Microcontrollers
ESP32, RP2040 and STM32 with a serial monitor, an OLED, an LCD and a motion sensor.

Co-Pilot and MCP
An AI assistant in the app, and an MCP server so other tools can read and edit the circuit.
Parts and export
A bill of materials with prices, KiCad export and OpenSCAD enclosures.

Academy
Lessons about electricity and electronics.