Search found 8 matches

by mecheng1
Wed Jan 23, 2019 2:07 am
Forum: About this Forum
Topic: Accuracy of 0-60 times with 1Hz GPS
Replies: 3
Views: 204

Re: Accuracy of 0-60 times with 1Hz GPS

Thanks so much Harry. So it's based on kinematic equations, assumption of constant acceleration, and interpolation between GPS fixes?

As long as it is accurate enough to demonstrate that my Jaguar F type V8S is faster than my brother's AMG C63s, I'm happy. :D :lol:
by mecheng1
Sun Jan 20, 2019 12:27 am
Forum: About this Forum
Topic: Accuracy of 0-60 times with 1Hz GPS
Replies: 3
Views: 204

Accuracy of 0-60 times with 1Hz GPS

I was wondering how accurate the 0-60 mph or other acceleration times can be, if they are based on a 1Hz phone GPS signal. Must be +/- 1 second ?
by mecheng1
Fri Nov 13, 2015 1:18 am
Forum: Trouble Shooting
Topic: Cannot open .MP4 overlayed files on PC
Replies: 1
Views: 432

Cannot open .MP4 overlayed files on PC

I can successfully view overlayed lap videos on my Samsung Galaxy S6, however when I copy to my PC running Vista ( The S6 has no SD card btw) , I am unable to open the overlayed vidoes. Any suggestions please?
by mecheng1
Fri Nov 13, 2015 1:10 am
Forum: Trouble Shooting
Topic: Speedo stays at 0 mph on overlay
Replies: 8
Views: 954

Re: Speedo stays at 0 mph on overlay

Well, I managed to overlay a few laps now and I can see everything fine on my Galaxy. However, when I copy the overlayed .MP4s to my computer I cannot play the videos. I have just about exhausted my attempts to do this. Any ideas please?
by mecheng1
Sun Nov 08, 2015 10:02 pm
Forum: Trouble Shooting
Topic: Speedo stays at 0 mph on overlay
Replies: 8
Views: 954

Re: Speedo stays at 0 mph on overlay

let's see if this works. Richard
by mecheng1
Sun Nov 08, 2015 6:17 pm
Forum: Trouble Shooting
Topic: Speedo stays at 0 mph on overlay
Replies: 8
Views: 954

Re: Speedo stays at 0 mph on overlay

Great! it works. Except that I have a flashing Cam#2, and 25 minute reference session PIPs?
by mecheng1
Sun Nov 08, 2015 5:03 pm
Forum: Trouble Shooting
Topic: Speedo stays at 0 mph on overlay
Replies: 8
Views: 954

Re: Speedo stays at 0 mph on overlay

thanks Harry, I'll give it a try
by mecheng1
Thu Nov 05, 2015 11:32 pm
Forum: Trouble Shooting
Topic: Speedo stays at 0 mph on overlay
Replies: 8
Views: 954

Speedo stays at 0 mph on overlay

First time user with Samsung Galaxy S6 32GB running Grand Prix version, paired with Racelogic VBox, running on the track at PBIR in Florida. When I try to overlay my videos, I get the overlay but it only shows a running timer, the speedo stays at 0mph. Seems I cannot switch on the speed feature. Any...