Speed-Gated Parking Sensors on a Suzuki Swift V — Reading Speed Straight off the CAN Bus
An ESP32-C3 quietly listens to the car’s CAN bus, decodes vehicle speed from the
ABS wheel-speed broadcast, and switches a relay that enables the aftermarket
parking controller — which in turn drives the front sensors and the
camera — only below 15 km/h. No splicing into the speedometer,
no aftermarket speed pulse — just the bus the car already talks on.
🔗 Source & schematics:
github.com/tema-mazy/mazy-iot — esp32/car/can_speed_control
