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18 Aug 2019 19:13:57
Had another negative encounter, it's been a few years since the last one, just an uneducated ******, going on about drones being illegal yada yada yada.    :-/
Still that didn't spoil my flying time, had an absolute blast  ~~
07 Aug 2019 19:52:01
ooooh mrs jones  :D
30 Jul 2019 15:26:34
D.B. you tightwad.. :cool:
29 Jul 2019 20:14:10
DB that just means you have shed loads of props in the first place ;-)
29 Jul 2019 18:53:33
Just had a thought, even with all the crashing I've done, I haven't bought any replacement props in over a year ~~
09 Jul 2019 19:45:42
May the sun shine and winds be light for BFU#8. Son't forget lots of vids for those of us unable to attend.  :D
09 Jul 2019 18:10:30
Hope you all have a great day  :beer2:
09 Jul 2019 14:05:28
BFU#8 details locked in for this saturday - see the head of the forum thread for all details.
05 Jul 2019 21:51:05
Good for genital warts as well......or so I'm told.. :hmm
05 Jul 2019 21:48:24
Just fixed a busted SMA connector on my TBS unity pigtail, it suffered badly in a recent crash and split in two, nothing a touch of the soldering iron couldn't fix  :D
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Printing 3d Forum

Multiwii Pro Blue Flashing LED

Started by freakybwoy, Saturday,October 19, 2013, 19:34:12

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Hi guys,

What a great forum!

I';ve just got into Quadcopters (been flying planes for many years), and decided to buy a 450 frame and a MultiWii Pro FC from HK.

I have it installed and loaded 2.2 FW onto it. The thing flies, although it needs setting up.

The problem I have is that I can';t seem to find anywhere on the web which explains what all the LED lights mean.

At the moment, I have a BLUE flashing LED and I have no idea why it';s flashing. I have done the ACC calibration and the MAG calibration but still it flashes. It';s a steady on / off kinda flash.

Any ideas?

Many thanks,



You should notice that one of the LEDs blinks when the quadcopter is tipped away from level. It';s an indicator that shows the gyro is responding properly.

This may help as well;


QuoteLED status signification

At initialization:

    a short blink means there is no ACC connected (Nunchuk or other)
    a long blink means there is an ACC connected (Nunchuk well recognized or other)

During field setup via LCD:

    there is a fast blink at the beginning of the setup mode, and at the end
    there is a fast blink when a parameter is increased/decreased, and when the parameter is changed

After the initialization:

    LED is ON when the motors are armed
    LED is OFF when the motors are not armed

General issues:

    The blinks at the initialization is very long (more than 5s): it is sometimes the case with a WMP+NK configuration. A way to correct this is to increase the INTERLEAVING DELAY in the sketch. (from 3000 to 3500 or 4000)
    The LED is permanently blinking: it indicates a wrong connection between I2C devices and the Arduino (maybe a switch between SCA and SCL lines)
    After trying to arm, the LED stays off: check your RX connection and set correctly the radio end point to match the range 1000-2000 in the GUI
One circlip short of a quadcopter.
 1 lobe short of an antenna.


I can';t remember exactly, but this from one of my bookmarked threads may help

QuoteIf you flashed new firmware to FC , blue LED blinks because you have to do acc and mag calibration. Then it stops blinking. At least on my board i have that blink always after clearing eeprom then flashing fresh MW 2.2.

So if you haven';t used the MultiWiiGui app to do this then that may be the answer to your flashing blue LED.  As I recall with my MultiWii Pro 2 (also from HK) the blue LED flashed during initialisation and then went solid.  So try the calibration from the GUI and see how you get on.
"Its better than bad, its good"

Current FCs: Pixhawk, APM 2.6, Naza M V2, Naze32, Flip32+ CC3D, KK2.1.5
Aircraft: miniMax Hex, DJI 550 (clone) TBS Disco, 450 Firefly, 250 Pro, ZMR250, Hubsan X4, Bixler 2