vw_t4_tcu_temp_to_fis

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vw_t4_tcu_temp_to_fis

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Arduino project to readout Automatic Transmission Fluid Temp and write to FIS display

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# vw_t4_tcu_temp_to_fis
Arduino project to readout Automatic Transmission Fluid Temp and write to FIS display from a VW T4 2002

Using OBD protocol KW1281 for getting the ATF temp from the Transmission Control Unit (TCU)

Using 3LB protocol to show info on FIS-display

Credits:

This project would not have been possible without the help of other open source projects out there.

Credits and thanks goes to:

Alexander's software and OBD2-interface
  
http://grauonline.de/wordpress/?p=74
docs: // https://www.blafusel.de/obd/obd2_kw1281.html

NOTE: For the level shifting, I used a 'AutoDia K409 Profi USB adapter', disassembled it,
    and connected the Arduino to the level shifter chip (LM339) - the original FTDI chip TX line
    was removed (so it does not influence the communication)

And to these projects for information for communication with the FIS-display
Thanks for publishing the code for the 1999 Audi
https://github.com/tomaskovacik/arduino/tree/master/VWFIS

Thanks for the code to understand the 3LB protocol. This is really a great project!
https://github.com/pohlinkzei/RPi_MFD_Interface

Thanks for the hints for checksum generation.

I managed to figure out the 2002 VW checksum-generation after study this page and numbercrunching in LibreOffice-Calc :-)
  http://www.gti-tdi.de/board4/index.php?thread/3787-tacho-full-fis-displaing-3lb/

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