Hi,
I have 4+ years of experience in Xamarin and developed 10+ years of experience in Xamarin.
As I can see you need to communicate to EML327 Bluetooth dongle and send/recieve by OBD II, I did not work on that thing.
But I want to try it and learn new thing which help me to do this task more focusly.
Please let me know if I can help you.
Thanks.