Freematics Forum

Blue means communication on going. Red is power. Basically you can't make the adapter work without plugging into OBD-II port of a car or an emulator.

Using the SD seat on TFT shield requires modification of SD2card.h (a file in Arduino SD library) to enable software SPI.

This needs some time and efforts. I don't know if this is a feature needed by many people.

What does the remaining bytes indicate?

Is your Arduino loaded with correct sketch and working well?

We will check this.

You can output PWM signal with the adapter.

I am sorry it's not supported. Only with a large order may we add support for it.

The driver is not properly installed for the USBasp.
Here is the driver:
http://www.fischl.de/usbasp/

On a 2009 VW scirroco, the OBD-II reading interval is about 20ms. That's 50Hz. On a 2008 VW POLO, the interval is about 500ms. This depends on the response time of ECU.