# BBRouter

> BBRouter is free to start: sign-up is open at https://bbrouter.com/signup.

BBRouter is a 3D breadboard editor and simulator in the browser. You lay out breadboards, chips, LEDs, switches, wires and Arduinos exactly as they'll be built, and it simulates the circuit as wired: 74LS, 74HC and CD4000 logic, 555 timers, RAM and EEPROMs, Ben Eater's 6502 computer, and real Arduino sketches running on emulated chips, with a scope on any hole. It checks the wiring against a schematic's netlist (KiCad, EasyEDA, Digital, Logisim, SPICE), auto-routes the missing wires, draws the circuit as a schematic in KiCad's style, warns about what a real build gets wrong, and gives a build sheet and a bill of materials. It works on a computer or a phone, and it's made for hobbyists building computers like Ben Eater's, and for classrooms.

On the Maker plan, people bring their own AI to their layouts through BBRouter's MCP server (signed in with OAuth) to inspect, edit and simulate them.

- The app (needs an account): https://bbrouter.com
- Try the editor without an account (nothing kept on the server): https://bbrouter.com/try
- Sign up: https://bbrouter.com/signup
- Sign in: https://bbrouter.com/login
- The guide, public: https://bbrouter.com/docs
- The plans and prices: https://www.bbrouter.com/pricing
- The privacy policy: https://www.bbrouter.com/privacy
- The terms: https://www.bbrouter.com/terms
- The refund policy: https://www.bbrouter.com/refunds
- What's new, release by release: https://www.bbrouter.com/changelog