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@@ -1,7 +1,7 @@ -Arduino OBD-II Adapter Library & Examples +Arduino OBD-II Adapter Library & Sketches ========================================= -(C)2012-2013 Stanley Huang +(C)2012-2014 Freematics.com The Arduino OBD-II Adapter is a product that works as a vehicle OBD-II data bridge for Arduino with open-source Arduino library provided. Besides providing OBD-II data access, it also provides power supply (converted and regulated from OBD-II port) for Arduino and its attached devices. @@ -12,42 +12,59 @@ OBD-II Data Logger Kits: http://arduinodev.com/hardware/#logger_kit About the library ----------------- -In current version of the library, following OBD-II PIDs are defined: - - Vehicle speed (PID_SPEED) - Engine RPM (PID_RPM) - Throttle position (PID_THROTTLE) - Calculated Engine load (PID_ENGINE_LOAD) - Absolute Engine load (PID_ABS_ENGINE_LOAD) - Engine coolant temperature (PID_COOLANT_TEMP) - Intake temperature (PID_INTAKE_TEMP) - Intake MAP (PID_INTAKE_PRESSURE) - MAF flow pressure (PID_MAF_FLOW) - Fuel pressure (PID_FUEL_PRESSURE) - Fuel level (PID_FUEL_LEVEL) - Barometric pressure (PID_BAROMETRIC) - Ignition timing advance (PID_TIMING_ADVANCE) - Engine running time (PID_RUNTIME) - Vehicle running distance (PID_DISTANCE) - -Additional defines can be added to access all OBD-II PIDs which the car's ECU provides. +Most commonly use PIDs are defined in OBD library as followings. + +Engine + + PID_RPM – Engine RPM (rpm) + PID_ENGINE_LOAD – Calculated engine load (%) + PID_COOLANT_TEMP – Engine coolant temperature (°C) + PID_ENGINE_LOAD – Calculated Engine load (%) + PID_ABSOLUTE_ENGINE_LOAD – Absolute Engine load (%) + PID_TIMING_ADVANCE – Ignition timing advance (°) + PID_ENGINE_OIL_TEMP – Engine oil temperature (°C) + PID_ENGINE_TORQUE_PERCENTAGE – Engine torque percentage (%) + PID_ENGINE_REF_TORQUE – Engine reference torque (Nm) + +Intake/Exhaust + + PID_INTAKE_TEMP – Intake temperature (°C) + PID_INTAKE_PRESSURE – Intake manifold absolute pressure (kPa) + PID_MAF_FLOW – MAF flow pressure (grams/s) + PID_BAROMETRIC – Barometric pressure (kPa) + +Speed/Time + + PID_SPEED – Vehicle speed (km/h) + PID_RUNTIME – Engine running time (second) + PID_DISTANCE – Vehicle running distance (km) + +Driver + + PID_THROTTLE – Throttle position (%) + PID_AMBIENT_TEMP – Ambient temperature (°C) + +Electric Systems + + PID_CONTROL_MODULE_VOLTAGE – vehicle control module voltage (V) + PID_HYBRID_BATTERY_PERCENTAGE – Hybrid battery pack remaining life (%) + +Additional defines can be added to access other OBD-II PIDs. Directory Descriptions ---------------------- libraries - all Arduino libraries needed for OBD-II adapter and kits -samples/dashboard_1602 - an example sketch showing a set of vehicle data with a LCD1602 shield - -samples/dashboard_4884 - a sketch providing extensive display of vehicle data with a LCD4884 shield +samples - several simple sketches for testing purpose -samples/dashboard_oled - a sketch providing extensive display of vehicle data with a OLED module +nanologger - OBD-II data logger working with 128x64 monochrome OLED display (for Arduino Nano) -samples/obdtest - a testing sketch for OBD-II adapter +unologger - OBD-II data logger working with 320x240 TFT LCD display (for Arduino UNO & Bluno) -obdlogger - a complete OBD-II and GPS data logger and timer based on 128x64 OLED display +megalogger - OBD-II and GPS data logger based on 320x240 TFT LCD display (for Arduino MEGA, ADK and DUE) -megalogger - a complete OBD-II and GPS data logger based on Arduino MEGA and TFT LCD shield +utilites - useful utility source code for development How to view logged data ----------------------- |