Inside the app
A closer look.
About this app
Made for a clear purpose.
Framecairn is an offline CAN frame and signal workbench for embedded developers, vehicle researchers, robotics teams, students, and test engineers.
Inspect bit allocation and decode known raw fixtures before trusting a signal definition.
KEY FEATURES - Interactive 64-bit frame map - Raw hexadecimal fixture decode - Start-bit, length, and factor records - Signal overlap review - Ownership and unit inventory - Offline sample frames - CSV signal import - Portable decode brief - Local PDF and JSON export - 110 original offline technical plates - No account, ads, analytics, tracking, IAP, or subscription
Framecairn decodes manually recorded raw values under the bit positions and factors you provide; it does not connect to a vehicle or device, transmit frames, validate safety, or replace approved network definitions. Confirm endianness, signedness, multiplexing, scaling, units, and fixtures with the system owner.
