Lightbar iPhone apps

I have a XGPS 160, it costs about 70 or 80 pounds on eBay or Amazon. It's a good little receiver. But, going on comments on here regarding the qstarz from posters like @Dither who got a DGPS signal, you may find the qstarz is better?
The XGPS " sees" the Egnos satellites, but it can't use any information from them to assist in the position calculations.
The ESA website on Egnos explains it as the difference between egnos supported, and egnos enabled.
The XGPS may be able to use the American Waas, ( not that it helps us)
Ps. And the XGPS only updates at 1Hz,
Which is less than ideal for parallel guidance.
 
Last edited:

joe soapy

Member
Location
devon
I downloaded the free agribus-navi https://play.google.com/store/apps/details?id=com.agri_info_design.AgriBusNavi&hl=en_GB
and went out for a play. It is on a Samsung Galaxy S5 and is just the free download using the phone's own built in GPS.

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The main downside was the total lack of instructions. It may be intuitive to people who have used this type of thing before but I struggled to work out how to set my AB line (the first pass across the field from which parallel passes are measured.) If I pushed the AB line button it seemed to grab the last ten meters as the base line which was not good enough on a thirty acre field.

I walked up and down the tramlines of a field I can see from our bedroom window. We work on 36m tramlines put in by eye with a 3m drill, and from my bedroom window I can see that there is an almost perfect 50 cms liquid fert overlap on this field. ( Good work @Pumba that is 50 mm accuracy, who needs RTK!)

Because I couldn't set the AB line across a full tramline the light bar feature became very inaccurate but the shaded map of the coverage was reasonably accurate. If you were putting on fert with a spinner which would have a big overlap then this feature alone would provide reasonable accuracy on undulating ground.

If someone has worked out how to set the AB line along the length of a tramline then let us know. Also does a plug in GPS antenna give better accuracy?

It is important to remember that this is a completely free program.

Whoever first posted this app deserves a vote of thanks,
and off course the devolopers,
Seems to work well enough on a samsung phone for grassland fert
 

joe soapy

Member
Location
devon
just the phone lying in the instrument binacle of the jd.
Driver reckones the painted done area is most help
and i notice he using the blopper still. however the 24m lines look fair
when looking from a distance. driver is pleased as punch so far
but moaned when his battery ran out.
Best bit was phone dont recieve when using app:D:D
 

jondear

Member
Location
Devon
Got it working on a moto g phone .Get the idea of how it should work but seems to get a bit lost when turning. Would the quartstarz receiver make it much more accurate ?what have people found .?If it speeds it up a bit its just what I need for light use.
 
Nexus 7 ( 2012) tablet, Ublox receiver, Taoglas patch antenna.
I am connected via USB, which works OK for me doing short sessions. But it does draw a lot out of the tablet battery.
I've got it running at 4hz using Gps constellation only, plus egnos.
 

Jkenny17

New Member
Just read through this whole thread, looking for advice and finding AgriBus-Navi bit confusing can someone show me there set up with a qstarz and how they link it to there phone just got an android phone and proving to be very difficult to get it sorted.

thanks in advance
 

Jkenny17

New Member
I followed ganders advice using farm sprayer app and got myself a wee qstarz. Use it on my Motorola android phone and I just set the qstarz between the dash and the windscreen. So far I have been sowing cut silage ground with 18m spinner, oh and I did open a field when mowing, and it worked pretty well. Getting the location of the receiver right for that is less easy though with two mowers. Probably should strap it to right mudguard, but not brave enough!

I like the farm sprayer, just because its nice to see the fields and gives you a bit of confidence that you are being tracked accurately. I did find it a bit haywire in one field and switched it from 10hz to 1hz, which seemed to settle it down. Can anyone explain what thebhz settings are for?

PS for a budget system, fifty quid is darn good. Never thought I'd have GPS guidance on my humble dairy farm.


you seem to have had the most use out of yours on this thread I was wondering if I could get some help from yourself on set up for this I have purchased a qstarz receiver that's on its way would you mind helping at all?

John
 

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