DIY CAN Bus Vehicle Sensor

The DIY CAN Bus Vehicle Sensor system operates by bridging a vehicle's On-Board Diagnostics (OBD) port with a microcontroller-based processing unit to capture and interpret real-time vehicular data. At the core of the circuit are two IndusBoard Coin boards paired with two TJA1050 CAN Bus transceiver modules. The TJA1050 modules act as the physical layer interface, translating the differential voltage signals present on the vehicle's Controller Area Network (CAN high and CAN low lines) into standard digital logic levels that the IndusBoard Coin can process. Twisted connector wires are utilized to link the hardware securely while minimizing electromagnetic interference (EMI) and signal noise common in automotive environments. Power and data connectivity are supplied via a standard USB-C cable for configuration and monitoring. By connecting the OBD port connector directly to the vehicle's diagnostic bus through the TJA1050 transceivers, the IndusBoard Coin units can listen to continuous data frames broadcast across the network. Depending on the programmed logic, the system reads these frames to monitor engine parameters, detect sudden deceleration changes indicative of accidents, or track operational motion across various transport platforms like cars, boats, and drones.