GPS not locking

Archive
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Hi I’m having some problems with Ublox GPS unit. My board is APM 2.6 the firmware ver. is 3.01. The problem is when I connect the GPS with APM in mission planner at the HUD I can see " GPS:3D fix" after a short while. But The blue LED of the GPS continue to blink. AS far as I know it sholud be solid blue. I have waited for about 80 mins but no result. The blue LED of the GPS blink but the HUD shows " GPS:3D fix" . What should I do? PLease help. and in this condition the copter refuse to arm in loiter mode. please give me a reply. I’m getting mad with it.

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[wf]Copter software[/wf]
[mf]Copter/3.01[/mf]

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@mamun dip,
If you have a uBlox GPS the blue led will flash once a second when a lock is obtained and the HUD will show a 3D fix.
If you have a MediaTek GPS V2. the blue led will flash until a 3D fix is obtained and then will go solid blue.
Regards,
TCIII Developer

4

My HUD is Showing 3D fix and The UBLOX gps Blue LED blinks. In some tutorials I have seen that after GPS lock at the mission planner a dashed circle is appeared and shows home. But in my mission planner I can’t see home. Another thing my copter don’t arm in loiter mode ? why ? please help.

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@mamun dip,
What is the value of your waypoint radius set to in the Flight Planner? Since I run rovers, my waypoint radius is set to 2 m and is hidden under my rover icon on the Flight Data screen.
Regards,
TCIII Developer

6

I never measured the way point radius. can you please tell me how I could do that? and please tell me whether I can arm the motors and takeoff in loiter mode. My firmware version is 3.0.1. my motors do not arm in loiter mode. Why?

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Because in Copter 3.01, the controller only arms in STAB. Arming in other modes comes with 3.1.

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and how the waypoint radius is measured? Can I fly in loiter mode even if the mission planner doesn’t show “home” with a dashed circle in the map(As I have seen in many tutorial)? But its showing GPS:3D fix. in the HUD.

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@mamun dip,
Your waypoint radius value is in the left hand corner of the waypoint schedule pop-up at the bottom of the Flight Planner window.
Regards,
TCIII Developer