OBD Reader with High Update Rate?
#11
The ECU is working at a much faster rate than the OBDII, so does anyone do a unit to tap into the ECU data? The guys that make aftermarket ECUs would know.
EDIT- you are going to need at least 0.1s resolution.
EDIT- you are going to need at least 0.1s resolution.
#13
Thread Starter
Thanks Mark, that would indicate approx 4Hz from the obd port. Groova, let me know how you get on, that's the one I'd pretty much narrowed it down to. I spose if I just logged revs from the ecu, and GPS speed & acceleration from the phone, it could be enough take a rev counter on track day videos just about worthwhile at 4Hz.
#14
UK Moderator
Get a 10 Hz GPS unit (I use a QStarz 818XT) and then you get good speed readings at least (and they are more accurate than the speedo of course)
http://www.amazon.co.uk/Qstarz-BT-Q8.../dp/B005GDIPMG
http://www.amazon.co.uk/Qstarz-BT-Q8.../dp/B005GDIPMG
#15
Thread Starter
Yup, that was another plan of mine, although I'm not sure (and can't find out anywhere) what the update rate is on my new S5. Wanted to date check it wasn't more than 1Hz before I stuck a 10Hz unit on my Xmas list!
#18
Thread Starter
I'm wondering if that's an update rate or smoothing that's making it smooth? But it does look decent. Perhaps the Chinese copies vary a lot (wouldn't be a surprise) and you got a decent one. If so, Lovegroova's should work fine.