![]() ![]() Would you have any insight on how to implement this on Harry's Lap Timer Custom PID Menu? The requested inputs are pretty different compared to what I've seen here and am used to. ![]() However the MPa value does go from 0 to 10 MPa - this is with me lead-footing the pedal And in the voltage there is always a value (about 0.1v if I'm not mistaken) even when the brakes are untouched so it correlates back to your compensation. To add on - the brake pressure PID visible in the app shows in two units: by MPa and by voltage. Having said that, OBD-II provides a much lower refresh rate than CAN, so I still recommend investing a little time into making a DIY CAN reader as documented on my GitHub: The -10 offset is to compensate for the default value of 10 (I've no idea why the reported value never goes below 10). The 1.1x is a multiplier that roughly matches the scale factor I previously chose for my CAN bus reader so that 100% is reported when I'm braking really hard. OBD Diagnostics, Inc.In RaceChrono format, the parameters are:Įxplanation: the min/max trick makes sure the output is in the range. You can then import this log file into Excel or any other program to do historical comparisons. The real time sensor data that is captured can be saved to a log file. Once the configuration file has been created, the user can edit the PGN and Parameter lists:Īs the system is running, the user can view real-time sensor readings in a variety of ways. One of the most common is to view the data iin tabular form such as the screen capture below. The automated scan will then create a baseline configuration file using only the parameters that the vehicle supports. Our J1939Scan software allows the user to do an automoted PGN scan of the vehicle which will methodically gothrough all the PGNs in the J1939 specification and determine if the vehicle supports it. Determining which PGNs are supported can be a difficult task for the user as well as cause a performance hit to the system by requesting many parameters that the vehicle does not support. ![]() ![]() Not all vehicles support all PGNs that the J1939 specification allows. All of the functions are specified using a configuration file, which you can edit to suit your particular vehicle. The J1939 diagnostic software that is included as a part of this kit allows you to view real-time sensor data and read and reset diagnostic trouble codes (DTCs). A 6ft USB cable to connect from the scan tool to your computer.A 6 ft J1939 Cable to connect the scan tool to the vehicle 9-pin Deutsch jack.This kit includes everything you need to get started scanning your heavy equipment: ![]()
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March 2023
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