A replacement Turn Signal Module (TSM) for Harley-Davidson motorcycles. Developed against the 2004 Sportster; likely compatible with other Harleys of the same generation. See Sportsterpedia for background.
- Custom PCB (gerbers and schematic in the corresponding folders)
- Firmware for the STM32F103, built with GCC
- 3D-printable enclosure (STL files; reference print in PETG, 0.3 mm layers)
- Turn-signal control: left/right, automatic cancel, and turn detection via an MPU-9250 IMU (DMP orientation)
- Hazard lights, including automatic activation on hard braking
- Halogen and LED bulb support with per-bulb PWM settings
- J1850 VPW bus receive and transmit (see docs/J1850_bus.md)
- Decodes bus signals: RPM, speed, gear/neutral/clutch, engine temperature, odometer, fuel, MIL and security-lamp state, and KWP2000 DTCs
- TSM/TSSM emulation so the instrument cluster, ECM and BCM see a live module at address 0x40: presence broadcasts, the 0x92 security handshake, and automatic DTC clearing (keeps the check-engine and security lamps off)
- J1850-based starter lock (starter disabled while the bike is moving)
- Reset-cause and bus tracing over SEGGER RTT
Work in progress. J1850 receive/transmit and TSM emulation are implemented and tested on a bike. A user-configurable TSM security PIN store is not implemented.
Requires arm-none-eabi and GNU make. From the project root:
make
Build- and pin-level options are in Core/Inc/settings.h.