OVMS is open source hardware/software giving EV owners full telemetry, CAN bus access, and remote control without vendor or regional restrictions.
Key Takeaways
Monitors state of charge, temperatures, tyre pressures, and fault conditions with PUSH notifications for critical events like charge aborts or battery cell failures.
Exposes three CAN buses, a DBC decoder, OBD2 translator, and a reverse engineering toolkit for deep vehicle introspection.
Remote control covers charge process, climate control, and engine tuning parameters; scripting enables integration with external charge control systems.
MQTT support connects OVMS to home and process automation; data logs to SD card or remote server; SSH and WebSocket streaming available.
Native Android and iOS apps plus a built-in web UI; user owns all personal data with no regional lock-in.
Hacker News Comment Review
Commenters position OVMS as a privacy-respecting alternative to the surveillance-heavy connected car systems built into modern vehicles by OEMs.
