Hi,
I modified the latest datalogger code from github to continually check for GPS connection when it starts up, and it doesn't work. I put the device on my dash and drove into an open car park for at least 10 minutes and still got nothing. How long should it take to connect?
Also it doesn't log to the SD card reliably, I just end up with only 0 byte files.
I'm using the OBD-II v3 adapter datalogger and an android app I developed myself to show and plot the data. You can get the android app here: https://github.com/JonnoFTW/OBD-Datalogger