My setup entails a second iPhone (SE 3) that is dedicated for track use and car diagnostics. It comes with a data plan however I have learned to turn on airplane mode when using on track. Additionally, I made sure to forget any other accessories or WiFi connections. The known device list to which it connects automatically are the first 2 items below.
- I use the original OBDLink MX Wifi (not plus) device as it works well with my older DME and it does not conflict with Bluetooth devices.
- For GPS, I have tried a few different ones but I am currently using RaceBox Mini. It consistently reads 10hz in the sensory list screen.
- For video, I use a GoPro 4 but it is turned on/off manually, WiFi is disabled. I overlay viseo manually, small price to pay to have everything else work
The issue is that upon reviewing my times, I noticed some of my laps show very low GPS sensor rates (i.e. 1 Hz), versus others that show 25 Hz. What could possibly cause this to happen despite taking all the precautions noted above? The ONLY thing I can think of is that my phone may have had a notification to connect to a nearby hotspot. I know I’ve seen it during the day when off track but it is hard to recall if appeared during a driving session. But would this cause the app to lose its GPS connection if the message wasn’t cleared?
I have now changed my “ask to join” WiFi and “auto-join” Hotspot settings from Notify or Ask to OFF. But I won’t be able to test this again for few weeks and was hoping to get clarity before then.
