It seems that I am unable to get my IRIS+ to obtain GPS lock and consequently the device will not arm.
I am getting 1.99 HDOP consistently but the indicator LED continues to remain in the bilking yellow state,
Naturally enough, I get the old two tone error response when I try to start the motors.
So I am at a loss to explain why locking GPS should be so elusive. The device initializes fine and this is evident by the parameter dump on the MP. I have removed the geo fence to see whether there was any change but this has yielded no joy.
This is an out-of-the-box IRIS+ any ideas out there?
I am getting GPS lock but I can't predict the time to do so. Sometimes it takes less than a minute and at other times it requires 7+ minutes. The strange part is that it is from the same location each time. I even changed the GPS_HDOP_GOOD parameter to 180.
I don't have an Iris but I've had issues with the cable/s from the gps to the pixhawk. Might want to try and replace the cable or at least make sure it's plugged in all the way. I had poor gps performance it wasn't consistent. It was a bad / loose cable.
The first time I tired to fly my Iris+ out of the box, it would not pass a prearm check. Being a noob, i didnt know what was wrong and kept getting the yellow blinking LED indicating system error. So I decided to pack it up and go inside to try and do some updating. Sure enough, i downloaded APM 2.0 and plugged up my Iris+. She connected, and then i updated firmware.I went out the next day and got her up easiy.
I've always been paranoid of letting an IRIS+ just sit drawing current as I want to get as much flight time as possible without re-charging.
I know it's dependent on the battery capacity - 5100mAh - but in general can you just leave the IRIS+ idling for 15 minutes (e.g. plugged in, ready to go but not armed) without it eating away at your flight time?
I tried to get GPS lock over a few hours last weekend but this proved futile. I am attempting to upgrade the firmware (because the MP flags an update is available) but the upgrade bombs out with an error modal - I will capture the screen and post in the hope that someone can fathom why this happens.
I am away with work at the moment and will return home on Friday so I will pick up the problem then.
When I bought mine I had downloaded all the software & spent time with 3DR's tech support. After 2 days of troubleshooting with them, it turned out it was just a faulty Iris and I returned it.
I've had that happen a few times with it and I just move it to a location that can get more satellites. Tree's will block it, a wall next to a house, things like that. If you're putting it in a wide open field and not getting a green light, there's something wrong.
Looks like its time to get in touch with 3DR. I spent another 3 hours trying to get GPS lock with no success.
I upgraded the firmware and MP so I am running with the latest (although I can't seem to find how to confirm the firmware version in MP)
Nonetheless, I am fresh out of ideas and energy with this baby so I am keen to see what 3DR have to say.
Well I called the support line (during business hours) and got an out of hours recording LOL.
Then I sent the support team a email describing the problem and requesting that someone get in touch with me....still waiting.
The adventure continues....