Freematics Forum

Do you have an USBasp? There will be no serial port when you use a USBasp programmer. You need to set programmer in Arduino IDE's menu. If not, you need to use another Arduino with Arduino ISP sketch do uploading.

If you are using with Mega Logger sketch, there is model switch defined in the config.h.

If you are writing your own sketch, simply declare this:

to use the OBD-II adapter I2C version.

Are you viewing the sample data or your own one?

You may be interested in our next version of the OBD-II emulator, which has a GUI on PC and iPad. It will be released shortly.

Yes, just make sure the baud rate matches.

1. Is the Arduino Mega ADK provided in Kit 3 Revision 1, 2 or 3? Only Kit #3 has the option for Arduino MEGA ADK as the main controller board. 2. When installed in a car, is the Arduino Mega powered via the OBD-2 cable? Yes, the OBD-II adapter is powered by the OBD-II port and it will convert and r...

Take a look in the sample data logger sketch for Freematics OBD-II adapter. It's very easy to let your phone get all those data.
https://github.com/stanleyhuangyc/Freem ... datalogger

We have our implementation and it is done with the onboard STM32 processor.

Please check if read() returns true or false.

Following vehicle protocols are supported.

CAN 500Kbps/11bit
CAN 250Kbps/11bit
CAN 500Kbps/29bit
CAN 250Kbps/29bit
ISO9141-2
KWP2000 Fast
KWP2000 5Kbps