Piston is the OBD II diagnostic application designed with the simplicity in mind. The application is capable of: - reading the live data - showing the fault codes and clearing them - displaying the logged freeze frame data The application requires the OBD II Bluetooth or WiFi dongle (ELM327 based) to communicate with a car. All the popular OBD II protocols are supported: - J1850 VPW and PWM - ISO 9141-2 - KWP 2000 - CAN (11 and 29 bits - both 250 and 500 kBit/s) If you have any request, comment or suggestion, please don't hesitate to contact me.