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Re: Make GPS the default for accelerometer
Posted: Sat Jun 27, 2015 9:53 pm
by Harry
- HelpMotorbikePreset.png (32.37 KiB) Viewed 2914 times
This means the device needs a tilt of 70 degree (90 degree would be flat). Both portrait or landscape orientation is fine. Please make sure your current vehicle has a "Motorbike" type set so LapTimer switches over to Motorbike Preset automatically (or set it directly in Settings).
- Harry
Re: Make GPS the default for accelerometer
Posted: Sat Jun 27, 2015 10:08 pm
by Harry
One more picture to show you the correct orientation to measure lean. This is the test construction I used during development.
- IMG_5302 copy.JPG (162.11 KiB) Viewed 2914 times
- Harry
Re: Make GPS the default for accelerometer
Posted: Sat Jun 27, 2015 10:10 pm
by MacBandit
Okay then my setup is probably very close to exact.
My lapping data says it's using the motorbike mode but I'm still not getting lateral force data. Unfortunately I've already recalculated all of the sessions so I don't have anything to share.
Re: Make GPS the default for accelerometer
Posted: Sat Jun 27, 2015 10:49 pm
by Harry
In case the tilt is off, lateral / lean will be zero.
- Harry
Re: Make GPS the default for accelerometer
Posted: Sun Jun 28, 2015 12:40 am
by MacBandit
Okay so it just has to be vertical while it calibrates? Is there a way to have it calibrate once and hold that calibration for the entire day?
Re: Make GPS the default for accelerometer
Posted: Sun Jun 28, 2015 6:23 am
by Harry
When selecting Motorbike Preset it is not calibrated. It simply expects to be mounted in a certain position (as discussed).
Harry
Re: Make GPS the default for accelerometer
Posted: Sun Jun 28, 2015 6:34 am
by MacBandit
Okay. So if the tilt is off wouldn't it fail to calibrate? Mine always does but the results are not accurate.
Re: Make GPS the default for accelerometer
Posted: Sun Jun 28, 2015 6:57 am
by Harry
Sorry, I'm lost. Select Motorbike Preset and mount the device in the position expected. This will allow LapTimer to record valid data on a motorbike.
Harry
Re: Make GPS the default for accelerometer
Posted: Sun Jun 28, 2015 7:06 am
by MacBandit
That's what I have been doing. Will it still record if it doesn't calibrate first? I only ask because it records but I'm definitely not getting an accurate reading for lean angle. It only shows lean for the very middle of the corner. That's why I've still been using the GPS data instead of the accelerometer meter data.
Re: Make GPS the default for accelerometer
Posted: Sun Jun 28, 2015 7:27 am
by Harry
Calibration is one approach to find a correct setting, a Preset is the other. Please don't mix that up. If you get a lean in the center of the corner only - probably where you have most lean, this is a clear signal the device is not at 0 acceleration while standing still (i.e. you do not have it mounted at 70 degree tilt). You can verify you have the correct angle by mounting the device and have a look into the acceleration shown while standing still. If lateral and lineal is 0 (+-0.05), you are at 70 degree. In case you have more, adjust the angle.
- Harry