Need help with my quadcopter

Maybe not relevant, but I checked the calibration mode behaviour with a servo connected to the output. As expected it just drove the servo according to the throttle stick positions. When I armed the board, the servo just buzzed. No wonder since it was an analog servo!
Seems that the board drives the output at lower frame rate when in calibration mode (maybe 50Hz), as opposed to the normal 300 or 400Hz (v 4.7). If those SS ESC are close to the limit with 300Hz, that might explain why they work fine in calibration mode, but not when the board is armed.
Buy Turnigy Plush instead.

Fred


Edited by flarssen - 04/Dec/2011 at 10:13pm

Start moving the stick after the two beeps but don't flick it down... Just a steady controlled lowering...

I checked the KK manual and HK manual more then 5x times already.
The gyros are set right. Stick centering is also fine for yaw/pitch/roll

I now tried to put the stick down after the initialization music but BEFORE the first beep and now I have all 3 motors starting to spin at the same time! But the 4th is still starting up only at about 40% throttle! Insane.
Its actually the board that causes the 4th motor to start later. If I plug the 3 wires from the 4th ESC in to another port on the board, say motor 3, and motor 3 wires where motor 4 was. Then I'll have exactly same bahavior on the 3rd motor while the 4th motor would start fine. I tried interchanging signal wires of another sets of motors. Regardless of the ESC, whichever ESC is connected to the MOTOR 4 on the HK board starts up very lately. Motors 1-3 are now in sync.

Edited by RoboSerg - 04/Dec/2011 at 8:21am

Flarssen:
From what I could see in the video the YAW POT was never touched either before or after the attempt to calibrate. So all that is happening is RoboSerg is playing beep tunes on the ESCs - without achieving the required outcome of the Quad Controller Board sending the required signal to the ESCs that makes all the motors start at the same time.

There are two completely different issues here and each has to be dealt with before the quad will fly.

As I have stated 3 times now:

1. The individual ESCs must have the same internal parameters set - you can't have one or two set to LIPO and the others to NON- LIPO, or BRAKE ON & BRAKE OFF. It appears that RoboSerg has done this already.

2. The four ESCs have to be set up together via the Quad Control board to establish the start point for all motor/ESC combinations. This can only happen while the YAW POT is set to ZERO. THIS IS THE STEP THAT IS BEING OMITTED IN THE VIDEO.

I can only stress that the extract from the instruction manual (see previous post) MUST be followed in order to achieve this outcome.

Edited by Sooty - 04/Dec/2011 at 4:52am

You have not yet calibrated the ESCs to start together under the control of the Quad Control Board. The beeps you are hearing are simply the ESC setup beeps being simultaneously output by the 4 member ESC Choir. You wanna hear 6 ESCs all churning out Oh Suzannah with great gusto - but you will need Plush ESCs for that world rocking experience.


You have to go to the quad instruction manual and turn a specific pot to zero to achieve this. I can assure you it is all documented in the manual:

Extract from KK Manual (Step by step quadcoptor setup:

2. Calibrating the throttle range on the ESC's
This is to ensure that all the ESC's have the same throttle range end points. This step only needs to be performed once. Fail to do this calibration can result in an uncontrollable platform. If you ever install new ESC's this step needs to be performed again. Never perform this step with the props mounted!
Make sure that the flight-controller is turned off
Turn the Yaw pot to the MIN position
Turn on the transmitter
Move the throttle stick to top (full)
Turn on the flight-controller
Wait until the ESC's beeps twice after the initial beeps. (Plush and SS ESC's)
Swiftly move the throttle stick fully down (closed). The ESC's beeps
Power off the flight-controller
Restore the yaw pot to around 50%.

It's as simple as that . . .

HOWEVER - if you are a bit late/slow moving the throttle stick after the two beeps you will still find that the motors won't start together. Don't worry - do it again - and you willget to know the timing and sequence of the beeps and be ready to fly into action immediately.



Edited by Sooty - 03/Dec/2011 at 5:37pm