does anyone here have the KK2.1 board ?

So, when you tilt the quad there is no speed difference right?
Just check the gyro and acc bubble on your quad.You will know weather the sensors are working or not.

There is NO speed difference . And the bubbles just stay there when i tilt the board.

Its the board.The bubble should move when you tilt.

nope, nothing. just stays there .

So the sensors of your board are not working.

i thought so will have to wait till 5th for replacement now.

do you have a KK2.1 board ? or know that anyone has ?

I've PMed you my contact number. You're welcome to come down to my place over the weekend, let's try to figure out what's going wrong with your quad!

Thanks a lot man

Although i wanted to know that The sensors of my board ( Sensor check menu ), the values dont move. And the Acc Bubble and Gyro Bubble stay there when i tilt the board ( plus motors dont show speed difference when board is tilted.
Possible case of bad board ?

Have you ever made flight with this board? if yes, the sensors are damaged now.
If no, the sensors may be damaged or it's a manufactuaring defect, if you bought from LHS, return it for replacement.
otherwise you can try re soldering the SMD acc. and gyro motion sensors using  a hot air SMD workstation (go to mobile technicians or SMD  servicers) - If that too does not help, thoughrouly check the board for any missing components near the accelero and gyro ICs (capacitors or resistors may me missing due to previous crashes).
the final attempt will be to replace the motion sensors.

But before trying any of above, please try changing the firmware on your board to some older versions or reburn the current version itself

I actually got it a guy I found on this group ( good prices BTW ) . I dont have anything to reflash the firmware. I guess Ill just take it to him and let him do his stuff ? If it works after re-flashing, cool, else he would do a replacement.

Has anyone checked the comments on the very 1st YouTube video that was posted on this thread?


From the comments, It seems that many users had strange issue while/after calibrating ESC's this way.
Never seen anyone calibrating their ESC's like this.

The most widely used way of calibrating the ESC on a KK2.1 setup is shown in the following video:

Start watching this video from 2:20 minutes

This is the sort of tool you would need to flash the firmware: http://www.ebay.com/itm/261441182745

well, if the guy you bought the board from is easily accessible, that will be your best choice.
otherwise you can buy a USBASP and reflash the board yourselves - Investing in a USBASP is not a waste, this tool is handy if you frequently use an atmel microcontroller based RC equipments (like KK boards, ESCs , OSD ........)

Hmm the main difference seems to be the timing of pressing the buttons. I had not seen the comments and never realised that it could cause a problem like this. I was under the impression it was the correct method. I apologise if it is the cause of your problems Mr. parichya.gautam.

I dont think the calibration was an issue. The sensors of the board dont work.

I had the KK2.0 earlier and i remember that in the sensor test, when I tilted the board, the values used to change.
It doesn't happen in this board. Plus the no bubble moving in the Acc and gyro bubble option.

I'm pretty sure the board isnt working the way it is supposed to.

ASLO, while playing with the PI values, from setting them from everything to Zero to random values to the higher ones at 250, I didnt see any difference in the movement of the quad. It the same everytime .

And also, regarding the calibration, I used it both ways, ( Connecting the M1 and other was connecting the battery ports ) didnt see any difference .

alright ...

Please don't open multiple threads on the same issue. It confuses everyone.  And certainly do not start a topic with the name "Help needed"   If that was a good idea, half the threads on this forum would all have the topic name "Help needed".

Please start by reading the common sense guidelines listed here, and make specific note of #12

http://www.rcindia.org/rc-india-forum/forum-usage-tips/

ya, I realized it later. Will take care next tme

i have multiwii se v2.5 flight control board brand new... if u r interested than pm.

no man, happy with KK thanks though .

wlcm

Sensor values stuck at 512, any expert on KK2 ?