odb2 dont blink at the beginning

[dromano]

Hello!

I recently bought a odb2 adapter, i done a test and my arduino read the revolutions correctly.
Now, i connect it to the car and it only blink one time and i can't communicate with it.
is it possible that it is unconfigure?
How can i do a factory reset and start since the begging?
is it possible that i connect it on a uncompatible car and it has been unconfigure?
Do you know what is happening?

Regards.

[stanley]

Is your Arduino loaded with correct sketch and working well?

[dromano]

Hello!

I found the problem! I used sometimes the adapter with arduino uno and other times i used arduino mega. I saw that the adapter only works with atmega328 and 168 and using only arduino uno works fine.

Thanks.