Freematics OBD-II UART Adapter V2.1 (for Arduino)

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enggar
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Joined: Fri Nov 09, 2018 7:45 pm

Re: Freematics OBD-II UART Adapter V2.1 (for Arduino)

Postby enggar » Fri Nov 09, 2018 8:35 pm

Hi All,

Nice to see you guys here, sharing your knowledge of Freematics OBD-II UART. Hope your knowledge can help me out of my problem.

Few months ago, I bought Freematcs OBD-II UART. From ATI command, I know it is v1.0 version. The default baudrate is 115200, but unfortunately my Arduino Pro Mini failed to talk properly at this speed. So I tried to lower the baudrate. And currently, I'm stuck here not being able to change the baudrate.

Lowering baudrate, I tried 2 methods:
1. Using command "AT BR hh", which should be supported by ELM327-based OBD scanner. It fails, and return "?" in reply.
2. Using command "AT PP 0C ON", which also should be supported by ELM327-based, resulted the same error.
3. Using the provided library <OBD2UART.h> from https://github.com/stanleyhuangyc/Ardui ... s/OBD2UART, also fails. After changing the baudrate using obd.setbaudrate() command, no proper serial communication except at 115200 (default).

Could anybody please help? Thanks.


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