No speed recorded and video space question.

Help on issues you run into with LapTimer; in case you have a question on how to use LapTimer, use the forum "Using LapTimer" instead
DanS13
20 or more Posts ★★★
20 or more Posts ★★★
Posts: 25
Joined: Tue Nov 05, 2013 10:16 pm

Re: No speed recorded and video space question.

Post by DanS13 »

Ahh good to know.

OK so how can I confirm the Qstarz is working then?

When I connect it and go to the GPS screen I see the GPS update rate climb from 1hz to 4-4.1hz which is inline with what I'd expect from a 5hz gps receiver.
User avatar
Harry
Site Admin
Site Admin
Posts: 10639
Joined: Sun Sep 12, 2010 10:32 am
Location: Siegum, Germany
Contact:

Re: No speed recorded and video space question.

Post by Harry »

Yes, if you see an update rate > 1Hz consistently, it is not the internal GPS. Please check the other values in GPS View to understand what is working and what ist not (coordinates, speed, altitude, direction, # satellites).

- Harry
Image Image Image Image
DanS13
20 or more Posts ★★★
20 or more Posts ★★★
Posts: 25
Joined: Tue Nov 05, 2013 10:16 pm

Re: No speed recorded and video space question.

Post by DanS13 »

From what I remember, only speed is missing.

Everything else appears to work.

I'll report back after testing again tomorrow.

Thanks for your help so far.
DanS13
20 or more Posts ★★★
20 or more Posts ★★★
Posts: 25
Joined: Tue Nov 05, 2013 10:16 pm

Re: No speed recorded and video space question.

Post by DanS13 »

OK did some more testing on the way to work and it appears the issue is the conversation between Roqy and LT, see below.

This is the screen on Roqy that shows your device as working, I'm driving down my street at this point.
Attachments
Roqy showing speed.
Roqy showing speed.
IMG_0527.PNG (93.95 KiB) Viewed 3535 times
User avatar
Harry
Site Admin
Site Admin
Posts: 10639
Joined: Sun Sep 12, 2010 10:32 am
Location: Siegum, Germany
Contact:

Re: No speed recorded and video space question.

Post by Harry »

Have you tested operation without roqyBT and external GPS?

- Harry
Image Image Image Image
DanS13
20 or more Posts ★★★
20 or more Posts ★★★
Posts: 25
Joined: Tue Nov 05, 2013 10:16 pm

Re: No speed recorded and video space question.

Post by DanS13 »

I then switched on LT and opened speedo view.

It moved to the current speed of the car but then would not move again from that point. As if it only took the initial speed reading from the GPS.
Attachments
LT speedo view.
LT speedo view.
IMG_0529.PNG (175.02 KiB) Viewed 3535 times
DanS13
20 or more Posts ★★★
20 or more Posts ★★★
Posts: 25
Joined: Tue Nov 05, 2013 10:16 pm

Re: No speed recorded and video space question.

Post by DanS13 »

Here's the satellite screen showing greater than 1hz operation but still a static speed.
Attachments
IMG_0530.PNG
IMG_0530.PNG (144.51 KiB) Viewed 3535 times
DanS13
20 or more Posts ★★★
20 or more Posts ★★★
Posts: 25
Joined: Tue Nov 05, 2013 10:16 pm

Re: No speed recorded and video space question.

Post by DanS13 »

I then switched off bluetooth, Roqy and the gps receiver and let LT use the internal sensor which worked fine for the speedo.
Attachments
IMG_0531.PNG
IMG_0531.PNG (145.28 KiB) Viewed 3535 times
DanS13
20 or more Posts ★★★
20 or more Posts ★★★
Posts: 25
Joined: Tue Nov 05, 2013 10:16 pm

Re: No speed recorded and video space question.

Post by DanS13 »

I'm a bit surprised accuracy is 10m with the GPS receiver at 4hz and only 5m at 1hz, I'm assuming lower is better.
DanS13
20 or more Posts ★★★
20 or more Posts ★★★
Posts: 25
Joined: Tue Nov 05, 2013 10:16 pm

Re: No speed recorded and video space question.

Post by DanS13 »

I should add, I have no issues with the GPS receiver on an Android with RaceChrono (But I want LT for the ease of Overlay and video etc).
Post Reply