Odp: OBD II chip??????

[Marek Skrzypiec]

I've  constructed OBDII scan tool.By now it isn't tested yet(I've not a time
to
write a program ) .It's a PC ISA card.It's based on 8052 .TTL->OBDII
converter
contain CD40109 ,OBDII->TTL contain CD4050.
Marek
-----WiadomoϾ oryginalna-----
Od: digi <digi at saturn.terahertz.net>
Do: gmecm at efi332.eng.ohio-state.edu <gmecm at efi332.eng.ohio-state.edu>
Data: 30 wrzeœnia 1999 20:50
Temat: Re: OBD II chip??????


>You can purchase the "Auto-tap" J1850 -> RS-232 converter from
>www.autotap.com. Its not the chip you were looking for but rather a
>self-contained converter.
>
>I do not know if it converts the protocol and sends it right to the RS-232
>port or if it has some kind of preprocessor which translates it into their
>own protocol. It comes with the converter and DOS based PC software for
>interfacing to your OBD-II computer
>
>However if your aware of this product and trying to build your own I
>apologize for the email.
>
>On Thu, 30 Sep 1999, Dave Hempstead wrote:
>
>> Here is a strange question:
>>     Does anyone know of a chip which will sit on the J1850 OBD-II
>> wire, handle the VPW protocol, and 'convert' it to standard
>> RS-232 type signals, passing the data bytes back and forth????
>>
>> Any pointers will be appreciated,
>> Dave Hempstead
>> dave_hempstead at hp.com
>>
>
>