A DIY 12 volt battery monitor - Page 4 - 2017+ Chrysler Pacifica Minivan Forums
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post #31 of 33 (permalink) Old 05-13-2019, 12:16 AM
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Wouldn't this board will give you a low level output, basically just a bunch of 1 and 0? You will have to write all protocol stack from scratch, figuring out the sync, error corrections, encoding, etc...

Maybe something like this will work better? https://copperhilltech.com/lin-bus-breakout-board/

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post #32 of 33 (permalink) Old 05-13-2019, 12:29 AM Thread Starter
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Yes, you would think so. You are quite right in that it is really a dumb device. But there are a very nice pair of open source software packages called SigRok and PulseView that will accept the data from that little USB logical analyzer and decode it for you. The CAN and LIN protocols are both supported: https://sigrok.org/wiki/Protocol_decoders. It is just the thing for exploring a LIN bus that is using an unknown command set.

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post #33 of 33 (permalink) Old 05-14-2019, 07:10 PM
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Originally Posted by stop-eject View Post
I imagined that the AZBean's monitor would be a passive device on the LIN bus. Seems safer and easier to program.
That works too.. likely better doing it passively.

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