cansub-reverse-engineering

cansub-reverse-engineering is an Embedded, IoT & robotics skill for AI agents, published by CSS-Electronics in the can-bus-reverse-engineering-skills repository on GitHub. Skillspace rates cansub-reverse-engineering D (63/100) and it passed the safety scan; the rating is based on static analysis only.

Reverse engineer / decode CAN bus signals: find which CAN ID, byte and bit encode a real-world quantity (vehicle speed, engine RPM, state-of-charge, coolant temp, throttle, door lock, ...) and derive its start-bit, length, endianness, scale and offset into a DBC. A deterministic chain of Python scripts (survey -> correlate -> bitsearch -> build_dbc -> verify) replaces "a human watches the screen to spot correlations". Works three ways: (1) OFFLINE - decode a signal from an EXISTING recorded log the user already has (a CAN + OBD2 log, an MF4/CANedge log, or a webCAN CSV) using a separately decodable reference such as an OBD2 PID (engine RPM, vehicle speed, coolant temp) or a CSS Electronics GPS source (CANmod.gps, or a CANedge's internal GPS/IMU on CAN9 - bundled DBCs, e.g. GPS speed as a reference for proprietary vehicle speed) - NO hardware needed; (2) LIVE - capture from a CSS Electronics CANsub interface with a human-supplied reference; or (3) VISION - the user has a CAN log plus a…

Grade

D

Quality

63 / 100

Safety

Passed

GitHub stars

112

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