Freematics Forum

If you are experiencing OBD connection issue with Freematics OBD-II Data Logger, that might caused by a bug in the OBD library. I am sorry for that. Please update OBD library with the latest source code from Github (click Download zip button on page right bottom). The OBD library is contained in the libraries sub-directory.

Hello Stanley,

I updated the last OBD library and still have a few problems with the OBD connection.
I don´t receive OBD-data from every car. I tested it with many different (newer) Cars.
Does anybody else have the same problem?

Thanks

So it all works before your updating the library?

No. Unfortunately, I notice no difference.

It works just for one of the cars I tested (I tried the logger with 7 different cars).
On this car I get one CSV-File per test drive.

When I try the same with other cars, it works unstable:
1) Sometimes I get one CSV-File per test drive, but without OBD-data.
2) Sometimes I get many CSV-files per test drive (about 2 kB/file). Those files contain only a few lines about the MEMS-sensor-data without OBD-data.

Thank You for the support!

Can somebody connect successfully to OBD?
I still have problems.
I figured out I can´t connect to obd via any protocol since the last update.
I use firmware V3.
With one of the older versions of the OBD-library and firmware V2 I was able to connect only to CAN 11/500.

Does anybody have similar problems, or suggestions?

Thanks

Hey

You are not alone

i get a lot of 1kb csv files on a peugeot 207.
I managed to get a file of 1gb once for a VW polo 2014.

oh and i also get random PID's logged that i did not tell to log.

Mark

Glad to hear, I´m not the only one
Are you working on a solution?

I use an older version of OBD-library and V2 and get a successful initialization to CAN 11/500 and KWP2000.
But I´m only able to read Data via CAN 11/500

Hello Stanley,

I still couldn't fix the problem.
To be sure, it's not a hardware fault, I ordered a second datalogger.
I am still only able to communicate via CAN 11/500.

Is it possible, that I set the Baudrate wrong?
- First of all I set Serial.begin(9600); in the setup-method.
- Then, in COBD::begin I set OBDUART.begin(38400); .....(I don't use the AT-command OBDUART.print("ATBR1 ");)

Or is it possible, that the Hardware doesn't support other protocols than CAN 11/500 ?

I hope You can help me.
Thank You