Licensed under the TAPR Open Hardware LicenseCopyright 2007 TAPR (c) http://www.tapr.org/OHLPlease use gEDA suite to view/edit attached schematicsWARNING: please take a note, that you should edit "<xarias_root>/schematics/bXX/gafrc" to point correctly to your"<xarias_root>/schematics/symbols" directory.GENERAL DESCRIPTIONThis hardware (widely known as carputer) is developed to allow you to get lots of useful information about your car. XARIAS could easily be adapted to use in every gasoline poweredcar with electronically controlled injection time. This version was tested on Toyota Corolla EEA100 (E10) with 4EFEengine. This engine has 4 injectors connected paralelly.It means, that one impulse open all 4 injectors at the time. The time of opening is measured on "Injector" input and multiplied by 4 to get correct result. If your engine has separately connected injectors you have two solutions. The first, and the easiest one, is to measure the time of opening only on one of them and then multiply it by 4, as opening times are very similiar on different valves at the same small period of time. The second is to make as much inputs as you have injectors and calculate opening time on each of them. This option is not supported by XARIAS at the moment.For more information please refer to: http://xarias.googlecode.com/If you have any comments, suggestions or questions you can send me a word to:romka [~at~] kolos [~dot~] math [~dot~] uni [~dot~] lodz [~dot~] pl