EH21 - CI-Bus, NDA, Oweh !, ein tiefer Einblick in den Caravan LIN Bus

Learn about the CI/CEE-Bus LIN protocol used in caravans - from power management to temperature control. Deep dive into the open source Vomo LIN implementation and diagnostics.

Key takeaways

CEE-Bus is a LIN bus protocol commonly used in caravans and recreational vehicles for temperature control and device communication
The protocol uses a master-slave architecture with one central master controlling multiple slave devices
An important component called the “electro-block” handles temperature separation and control functions
The implementation has been developed as an open source project called “Vomo LIN”
The system operates on a 12V power supply with various modules like lift, compressor, pump and storage modules
The protocol allows communication between different devices without collision issues
Various manufacturers like Votronic have implementations of this protocol
Diagnostic capabilities are built into the protocol for troubleshooting
The Linux spec version 2.2R is used as the base for implementation
Development required extensive reverse engineering since documentation was limited and protected by NDAs

EH21 - CI-Bus, NDA, Oweh !, ein tiefer Einblick in den Caravan LIN Bus

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