Quad Quad Build

[claytonbakerjr]

Ok needs some help...
I put the props on and made sure all motors were spinning the correct directions according to
the motor layout in the KK2 board.
I made sure the props were in the correct spots and even compared it to the other quad
I have.
Double checked about everything I could and even connected on motor at a time
to make sure the motor order was correct on the pins.
However when I give her throttle she does not lift off.
Holding it in my hand I can feel it pushing down instead of up so I must have missed something
but for the life of me I cannot figure it out?
Thoughts?
I am going to stick a different set of props on her just to see if maybe it's the props
but I have a feeling it is not.
Thanks

 

[claytonbakerjr]

I have a DX8 with a AR8000 receiver
Ok because I know someone will ask here are the settings
Alieron:
P Gain 45
P Limit 100
I Gain 30
I Limit 20
Elevator the same as above
Rudder:
P Gain 80
P Limit 20
I Gain 70
I Limit 10
Self Level:
P Gain 75 (I did not change)
P Limit 20 (I did not change)
NOTE: Receiver Test all looks good however in order for the Transmitter and KK2 to agree
I had to reverse Aileron and Elevator to show proper directions on KK2
Now then in Receiver Sliders...
1: Aileron, move stick left slider goes left right=right
2: Elevator, Move stick forward bar goes left pull back bar goes right
3: Throttle, Starts at left idel, goes to right full
4: Rudder, Move stick left bar goes right....move right bar goes left. ??????? See Note above?
If I reverse rudder on transmitter Sliders seem right if I am understanding it correctly
however goes back to Reciever test it goes the oposite....
ACC Calibration went well
Scratching Head

 

[Tony]

To me, it sounds like you have the props on backwards. Hold the quad down with one hand and with the other, give it about 1/4 throttle. Put your hand over each prop and you should not feel any air pushing up to your hand. If you do, then the motor is spinning backwards, or you have the wrong prop on the motor.

 

[Stambo]

Post a video starting with the quad disarmed, then we can see what is going on.
As close up as possible while still getting all 4 props in.

Motors diagonal from each other should spin the same way.

It sounds like either motor direction or wrong props as Tony said.

 

[claytonbakerjr]

I am getting ready to head out for Super Bowl but here is what I got. I will get a video together later.
Motor 1 top left CW
Motor 2 top right CCW
Motor 3 Lower right CW
Motor 4 Lower left CCW
I put a piece of tape on each prop adapter then used a marker to determine what direction they were going.
Used the "smear" test, ya know what side of the tape smeared LOL
HQ Props, Motor 2 and 4 props marked 5030R
On my Eye One Extreme same prop layout but with 6045's
I even placed a set of 6045's on the 250 and same results.
Thanks guys

 

[Tony]

Just read up on those props, and it's saying the 5030R props are a CW prop, not CCW.

 

[Stambo]

Just read up on those props, and it's saying the 5030R props are a CW prop, not CCW.

Yup, what he said.
Swap those props, then hold it CAREFULLY while you spin it up and make sure your controls work they way the are supposed to.
Also while you are holding it, tilt it forwards and backwards as well as left and right.
You should feel it trying to resist you.

 

[claytonbakerjr]

Well...I thought the R meant reverse. ... like in ccw....Ok will give it a shot.
But when I used the 6045s they did the same thing and the 6045s fly fine on the EOX.
[emoji15]
[emoji53]

 

[claytonbakerjr]

Feel like a knuckle head. But still wondering how the EOX gets off the ground with same setup.
Tomorrow is another day. Maybe I am just holding my mouth the right way [emoji13]

 

[Stambo]

Feel like a knuckle head. But still wondering how the EOX gets off the ground with same setup.
Tomorrow is another day. Maybe I am just holding my mouth the right way [emoji13]

Probably find the EOX has opposite motor rotation.

 

[claytonbakerjr]

Stambo
You were correct on the EOX...the motors are oposite of the 250.
Now then I did put the props on like advised and now it lifts however
I seem to be off some where.
While holding it in my hand when I give throttle it wants to bring the front end
up and over. Kind of like it is wanting to flip, with auto level on or off.
I am going to try to setup a video to show this as best as I can.
Now another quick question.
I am finding that I need to reverse some of my servo inputs. Is that a norm?
Once I create the videos I will show them on the DX8.

 

[EyeStation]

That lift is probably the gyro correction going the opposite way. It feels the lift and is compensating by adding to the same direction.

 

[claytonbakerjr]

Here is the video link to the quad while testing it in hand.
I have the KK2 board setup and DX8 setup video coming as soon as it processes on You tube


- - - Updated - - -

That lift is probably the gyro correction going the opposite way. It feels the lift and is compensating by adding to the same direction.

That being said at what point should it stop? Placing it on the ground it reacts the same.
I know if I throttle it up enough she is going to do a back flip LOL.

 

[EyeStation]

Does it respond correctly when you tip it on the forward/back axis and the left/right roll?
I see the front end rising on throttle up and can't really tell from that if the correction is proper. If it responds properly when tilted on each axis, I would guess it is a Throttle End Point cal for the esc's again. Did you cal your ESC's using that parallel connection or as individual ESC's?

 

[claytonbakerjr]

Does it respond correctly when you tip it on the forward/back axis and the left/right roll?
I see the front end rising on throttle up and can't really tell from that if the correction is proper. If it responds properly when tilted on each axis, I would guess it is a Throttle End Point cal for the esc's again. Did you cal your ESC's using that parallel connection or as individual ESC's?

When I move the quad around the motors adjust their speeds.
It felt like it was trying to compensate.
As per ESC's I did them all at once as per info on youtube videos.
I turned the transmitter on, placed the throttle at 100%
then while plugging in the battery pressed buttons 1 and 4 until I heard
the 1st beep and then moved throttle to zero then heard the other beep
followed by 2 or 3 quick beeps.
While holding the quad I tried not to hold it too tight so that you
could see the affect.
One thing I did notice is in order to keep the front end from coming up
I had to manually adjust the elevator then it seemed to level out
but once I gave it more throttle the front end came up again.

- - - Updated - - -

Here is the setup video of the KK2 and DX8
I just made another video showing lift off attempts that I will post as well.

- - - Updated - - -

When I move the quad around the motors adjust their speeds.
It felt like it was trying to compensate.
As per ESC's I did them all at once as per info on youtube videos.
I turned the transmitter on, placed the throttle at 100%
then while plugging in the battery pressed buttons 1 and 4 until I heard
the 1st beep and then moved throttle to zero then heard the other beep
followed by 2 or 3 quick beeps.
While holding the quad I tried not to hold it too tight so that you
could see the affect.
One thing I did notice is in order to keep the front end from coming up
I had to manually adjust the elevator then it seemed to level out
but once I gave it more throttle the front end came up again.

- - - Updated - - -

Here is the setup video of the KK2 and DX8
I just made another video showing lift off attempts that I will post as well.

Sorry it is sideways

 

[claytonbakerjr]

Ok here is the lift off attempt

 

[claytonbakerjr]

Ok
I grew a pair of balls and took it outside.
I played with the trim settins on the elevator and the aileron until I got her off the ground
without doing any back flips.
On the DX8 on the monitor screen it shows -8 on both.
Should I assume that I need to go into the sub trims and adjust it back to normal
or can I tweak this on the KK2 board?
I have never really messed with sub trim settings before but since I am in negative numbers
on the monitor do I take the sub trims to positive numbers to equal it out or in this
case L/R or U/D.
That being said Is each single number in the sub trim represent each single number
in the trim settings?
In other words since aileron is -8 (left) would I make the sub trim of aileron 8 right?
Sorry to sound so dumb here.

 

[Stambo]

Do you have self level turned on?
Trim on the tx should always be centered.
You should see the KK2 reciever test screen all should be centered by TX subtrim
Then perform ACC calibration on a perfectly flat surface. (Check with a level)
There is a setting in acc trim for adjusting level on the KK2, this should be done in zero wind conditions.

This guy is where I learned all about KK2.

 

[claytonbakerjr]

Thanks Stam I will check it out.
Not to get off on another subject but in general for a 3s lipo what can I safely run the battery to before she drops out of the sky. I have the alarm set at 10 volts.

 

[Tony]

3.6 volts is the lowest that you want to go. And as he stated, you should zero all trims, otherwise the gyro will think you are constantly giving it an input. Zero the trims and run the calibration in the gyro again. Wish I had more knowledge of this gyro.