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Topic: Bike interface OBD (Read 85828 times) previous topic - next topic

aster94

#180
Apr 14, 2019, 12:33 pm Last Edit: Apr 14, 2019, 12:41 pm by aster94
Seems to be correct, a few question just to be sure:
The ground of the arduino board and the motorbike are connected?
The arduino tx go to the L9636 tx? (them don t have to be swapped)
Are you sure the L9636 is in the right position? The position of pin 1 is decided by this little line
https://postimg.cc/bd7471rj

If all of this are correct we should wait for the logic analyzer and then put a voltage divide to the k-line and check it

By the way in the future I suggest you to use adapters like these for the not-DIP packages, i bought a few of these with various size and them are perfect
https://images.app.goo.gl/FDRybwevtFbtuHGN6

CapFirepants

Seems to be correct, a few question just to be sure:
The ground of the arduino board and the motorbike are connected?
The arduino tx go to the L9636 tx? (them don t have to be swapped)
Are you sure the L9636 is in the right position? The position of pin 1 is decided by this little line
https://postimg.cc/bd7471rj

If all of this are correct we should wait for the logic analyzer and then put a voltage divide to the k-line and check it

By the way in the future I suggest you to use adapters like these for the not-DIP packages, i bought a few of these with various size and them are perfect
https://images.app.goo.gl/FDRybwevtFbtuHGN6
Thanks for your reply.
The ground of the motorbike is connected to the second black cable seen here (yellow arrows) https://imgur.com/2AZnaCC.
I checked the TX and RX, they are not swapped.
I'm 99% positive the L9637D is in the correct position - It's not a L9636 chip though, it's the 9637D. Do you think this is a problem? I think this chip was recommended to me elsewhere.
I've already ordered some SOIC to DIP boards from Aliexpress, I hope they will arrive soon (along with the logic analyzer). Im pretty positive this should work. Thanks a lot for your help so far!

aster94

Quote
It's not a L9636 chip though, it's the 9637D.
it is the same! i didn't wrote the last "D"


Quote
Im pretty positive this should work
Me too  :)

CapFirepants

it is the same! i didn't wrote the last "D"

Me too  :)
Alright - the logic level analyzer has arrived! Still waiting on the SOIC to DIP converters though.
Is there something I can already do now that I have the analyzer?

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