ELM327  OBDII serial interface
 

 
  • If you are working with cars and trying to diagnose at some point you will need to interface onboard computer into computer.
    For this reason you will need a sort of interface. Here we offer an OBD-II to serial emulator. It provides simple serial TTL level voltages that you will need to connect to some sort of converter to interface it into RS232, USB or Bluetooth

    PCB layout with DB9  or  OBD-II male connector

    The DB adapter version uses 9-pin D type connector to link up to vehicle's OBD-II J1962 connector. The pin out is De-facto a standard for OBD cables. The cable available on eBay or AliExpress from many vendors.

     
    J1962 Pin Description DB9F Pin
    2 J1850 Bus + 7
    5 Signal Ground 1
    6 CAN High 3
    7 K Line 4
    10 J1850 Bus - 6
    14 CAN Low 5
    15 L Line 8
    16 Vehicle Battery Positive 9


     

    Features

       TTL level output 0 or 3.3v
       CAN  bus
       J1850 bus
       K bus
       L bus

     




 
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