If there is only OBD2 but not connect to a car, use minicom or screen to send AT instruction will get "UNABLE TO CONNECT".
Node-bluetooth-obd have no respond to it, and would still process "UNABLE TO CONNECT" as data source.
So I add this condition and it does work.
If there is only OBD2 but not connect to a car, use minicom or screen to send AT instruction will get "UNABLE TO CONNECT". Node-bluetooth-obd have no respond to it, and would still process "UNABLE TO CONNECT" as data source. So I add this condition and it does work.