I have been using pixhawk succesfully for a week now BUT...
today after a small flight indoors ... after i dissarmed my quad i couldn't arm it again from safe button.
I didn't have the buzzer on so i had no indication of the problem. So i decided to plug my pixhawk on my pc through usb without everything (later on i connected the buzzer and safety switch) and it could not connect to apm nor mp.
After pluging the buzzer i heard this strange beep sequense that is not listed in the known ones so please if someone can help me ... it goes 3 quick beeps and then 3 long beeps like beep beep beep - beeeeeeep beeeeeep beeeeeep . The safety switch blinks fast.
If while it beeps i press the "Flight management reset button" next to USB , then pixhawk comes alive and i am able to connect to both apm and mp.
And WHY does it get OK when i press the "Flight management reset button" ?
Of course pressing the "Flight management reset button" is not a normal solution for when i am on the field , so PLEASE HELP ME !!!!
Your MiniSD you mean?
Is there an internal connector in the PIXHAWK casing which could get lose ?
I have the exact same problem as Yiannis with mine version, and indeed the sound pattern look like to match with a missing MiniSD card (P.s I am newbie to this PIXHAWK stuff)
I have taken out and in the sd card a couple of times after the incident , but problem seems to inseast. For some strange reason though , sometimes it starts ok but most of the times it doesn't
did you do any special format on the card ? i mean do i just buy a small sd and plug it in ?
thx alot for the info pal .. i do have this bin file ( i think one) and i will erase them to see what happens .. Hope to work as well as it did for you. I appreciate your response
Hi Yiannis, did you get this sorted, any repeats?
I've keep getting this problem too, with thee short beeps, thee long beeps and sometimes accompanied with a yellow flashing LED. It seems to happen when I change batteries, at least that is the case so far. Scenario: I am flying the quad, I plug in a new battery and then it starts with the thee short, thee long beeps just as you've described. I've already tried removing files form SD card, reformating SD card, re-seating SD card etc.. it's a very annoying issue. It's happened a few times already to me.. seems that simply resetting the whole board and reconfiguring fixes it for a time.... but this really should not be necessary.
I just got response from 3DR support..
"That well known sound pattern is regarding a mission SD card on the autopilot. please be sure that your Pixhawk has it microSD card already inserted on it slot before power this up."
No kidding, but if my SD card is properly plugged in and I've check the SD card on my computer several times, what is causing the problem?
Erik, I also performed a slow format and a disk check including bad sector check, no problems found at all...
The engineer asked me to swap out the PX4 SD Card with another one, so I used a SanDisk 2GB Micro SD I had on hand, performed the same process of fat32 slow formatting, disk check with bad sector check and put that in, no problems at all. I can in fact swap back and forth between the shipped PX4 SD card and my own and every time I get panic alarm with the PX4 SD card and the SanDisk card has no problems...
I am now using the PX4 SD card in my video camera where the SanDisk came came from without any problems..