RC India

Im facing GPS: no fix! problem on mission planner.. Someone else went through this ? Need help cannot get gps working.! :(

None of apm user faced this problem.??

Dont worry buddy i will get this problem fixed

Reasons can be many. Which module are you using exactly? A pic will be of great help for both sides.

To begin with I hope you are trying this outside under an open sky. Have to be sure about it.
Also leave it for sometime like 10-20mins for the first time.

Or it could be due to wrong wiring. Correct wiring diagram if its the one I think you are using is
http://www.rcgroups.com/forums/showpost.php?p=27574051&postcount=10 (http://www.rcgroups.com/forums/showpost.php?p=27574051&postcount=10)

Or could be that GPS module is not configured correctly (ex: baudrate) and you will need to program it.

Ok, thank you for support! Now will tell all processes which I followed
Starting from step 1
Mission planner>installing firmware quad x>wizard>calibrating compass>calibrating radio>
Mean while
Mixing radio to achieve 6 flight modes on it
Then saving flight modes>fail safe !!
When I returned to first page of mission planner I saw my apm board was working but gps: No gps!!

When read in some forums that antenna wire must not be plugged in, then I plugged in the gps!
After it gps status as No fix!

Contacting Chintal and following what he told I waited approximately for 1 hr in an open space ground but still didn't get the signal.
The GPS module had solid green color always.!

Solid green or blue??

When its searching for GPS lock its blinks green and when it has a lock then its solid blue.

Can you post image of the connection between your GPS and apm?

Yup sure.!!!!!

are you using a similar gps module as attached in the image? when it has a gps lock then led on the gps module will blink blue, on apm it will be solid blue..

Yes he has the same gps

Solid green i have never seen that, its either blinking green (GPS search) or solid blue (GPS lock)

I am sure about this as i have tested this many times with my MPNG and APM both. You have to be in open ground and lock happens quickly.

Today I have received my APM & GPS module (similar one). I got GPS lock with 3D fix within 15 min in my home.
Solid Green LED (on gps module) -> GPS is powered
Blue LED Flashing (on gps module) -> GPS lock

As mentioned by Mr.Satyagupta, try outdoors, you will get GPS lock quickly.
If possible pls post a pic showing the connectivity. Sidewinder has shared a link which shows how to connect it to APM.


What antenna wire?

The cable which you might have got along with this GPS module should have a 6 pin connector at one end (this should go onto the GPS module) and will be split into two connectors (5pin & 4pin)at other end.

Out of the 5pin connector, there will be only 4 wires which should be connected to top GPS port on APM.
Out of the 4pin connector, there will be only 2 wires which should be connected to I2C port on APM.
Total 6 wires end to end.

hello guys  :)
i face similar problem but in my case GPS fix but it always shows BAD GPS HEALTH on mission planner
so what does it mean??

Sorry for delays but I was unable to post it on this as size limit is 200kb
https://docs.google.com/file/d/0BxHXeNcxvx8TYmpkY09sYVBXRWc/edit?usp=docslist_api
Check here

What's ur home location.? I stay on first floor tried keeping in balcony and in open space too but no result.!!!

Aeroempire, can you turn you GPS upsider down and send image of the connection?

Assuming GPS as faulty, it is send back to Chintal(RCmumbai.com) for replacement.! he will check and will let me the status.. Thank You everyone for your support and help!

Satyagupta Sir please check ur PM need some stuff again..

phanivyas Sir thank you for talking to me and providing essential info regarding APM...

Can it be the problem of APM board.? May be GPS is working properly but APM may be unable to analyse it.??

Well can I fly my quad using APM 2.6 without GPS and compass.??

Any guide to configure APM without GPS and compass.? Fly in stabilise mode.?

you can fly apm without gps & compass, in stablize mode, alt hold etc. check this link for further info.
http://copter.ardupilot.com/wiki/flight-modes/ (http://copter.ardupilot.com/wiki/flight-modes/)

Your copter can be armed without gps & compass. Your accl,radio,flight modes has to be calibrated in MP. If you are facing arming issues you can disable pre arm checks.Refer to the link below.
http://copter.ardupilot.com/wiki/prearm_safety_check/ (http://copter.ardupilot.com/wiki/prearm_safety_check/)

You said that you have already tried uploading 3dr config to gps module, checked the cabling.Even then you were unable to get GPS lock. So atleast what you can do is to try with a different GPS module.

Its good but keep that as last option.

Phanivyas those links are very good and helpfull for many first timers I must say thanks for sharing :thumbsup: