Hi guys,
I was wondering if the Garmin GLO will provide me with any more accuracy than the my current 5Hz Gtop bluetooth receiver. I have read through the forums that the qstarz bt-q818xt doesnt provide any greater accuracy than its 818x brother.
Im only going to ugrade to make use of the 10Hz capability for Android (& symbian if possible) otherwise ill stick with whatI have.
Cheers,
Dave
Comments
Notice that Garmin GLO works with Android version, but it probably would not work with Symbian or Windows Mobile versions.
WARNING: DO NOT UPDATE YOUR GARMIN GLO TO 2.40 FIRMWARE: It's buggy. You get 6-7 updates per second on Android phones but the timestamps are in one second precision. So you get 6-7 updates all with the same timestamps So in effect the update rate is only 1 Hz as the correct timestamp is really important for lap timing! Also the update app bricked one of my receivers!
+ Had lock on 22 satellites when car was stationary
+ Had lock on minimum 12 satellites in 180 degree corners and then lock came back to 20-22 satellites during straights
+ Really smooth driving line and trajectories, even some basic driving line analysis can be made from the data
- On my Nexus S the reception over Bluetooth was varying between 10 hz and 5 Hz so some updates were dropped. Was running OBD-II at same time (prototype!) so it might be something to do with it. But not a big problem, as the 5 Hz is still plenty (notice also QSTARZ receivers seem to suffer from this on Android).
I will write more data analysis once I get to test this on a faster car.
I'm considering selling my BT-818XT to get one of these.
By the way, is there data about devices which would run Garmin GLO @ 10Hz? At least seems that high end Samsung Galaxy's tend to drop some updates?
I use RaceChrono 2:34 on my HTC One S with Android 4.1.1. and Garmin Glo.
Under RaceChrono Settings I've tried in the expert settings Bluetooth fix, there was no improvement.
..... what can I do to make the signal clean runs on 10hz?
Due to the rythmic rate changes. First test was poor.
Ziploc, I have not seen the data rate vary between 0-10 Hz, but rather 5-10 Hz. If it goes down to 0 Hz it's not good sign. But 5 Hz is still very good.
Attached is a screenshot of my session.
https://db.tt/JyEsHw2G
I'm using HTC one on 4.3 att stock Rom.
Nexus 4, latest Android. Should be latest RaceChrono build.
I had tried a Qstar a few weeks prior to trying the GLO. It was only after receiving the GLO did I go back and look at a hz graph of the Qstar data. I also noticed fluctuations from 0-10hz with some drops. After that, I started troubleshooting my Nexus4.
After lots of tests with wifi on/off, OBD2 streaming on/off, I started googling and heard people mention an app called 'Bluetooth GPS' on the PlayStore. Which will connect to GPS antennas and present them in the OS in such a way so that other apps may have an easier time connecting to them. So I gave it a try. Immediately I noticed an improvement. Now I fluctuate between 5-10hz like the poster above with more consistent readings.
Let me know if I can help further. Thanks for the wonderful app!
I look forward to trying again at my next track day nov 9th
https://www.dropbox.com/sc/6jav197juorwghj/nuEYpim8t4