[ARDF] ARDF Digest, Vol 100, Issue 2

[Vadim Afonkin]

It is not an application question - if hardware does not provide 3 angle (xyz) measurments, tilt compensation, accelerometer, you cannot get correct azimuth. Try to point your iphone to some location, take an azimuth, then turn it up, flip it few times, turn and take an azimuth again - you will get horribly different numbers. You can calculate your movements by using gps but only if you move. And if you dont move - you are down to only compass option. Thats why I made external compass - just connect it to iphone jack and use serial to communicate. Pcb is very small - it only requires max3232, bl233 and you can use iphone as mcu or use pic16f886 to drive it. I use only smd components.


Sent from iPhone

Dec 30, 2011, в 18:56, "Mike (KA5CVH) Urich" <mike at ka5cvh.com> написал(а):

> On Fri, Dec 30, 2011 at 2:59 PM, Vadim Afonkin <vadim.afonkin at gmail.com> wrote:
> 
>> iPhone has a such poor quality compass
> 
> Mike wrote
> 
> I did find a good compass application in the 'droid market called "GPS
> location".  It has a compass, speed, altitude, acceleration, lat lon,
> magnetic field strength.
> 
> -- 
> Mike Urich KA5CVH
> http://ka5cvh.com
> 
> PIO STX-D14 S/E - APIC D1 & D14
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> 
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