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Nov 11, 2010, 12:44 PM
Registered User
rimshotcopter's Avatar
Quote:
Originally Posted by bob4432
more power, no servo setup for the rear motor - all control is done through electronics so frame building is very simple.
also, depending upon which motor fails, Redundancy. Rusty (I believe it was him) did a test and found any of the top motors can fail with the copter still landing safely.
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Nov 11, 2010, 12:56 PM
Registered User
bob4432's Avatar
Quote:
Originally Posted by reverendrichie
also, depending upon which motor fails, Redundancy. Rusty (I believe it was him) did a test and found any of the top motors can fail with the copter still landing safely.
why only top motors?
Nov 11, 2010, 01:00 PM
FPV Junkie
tazdevil's Avatar
Quote:
Originally Posted by clacho
Hi taz, sorry about this silly question...
what's the benefit of the y6 over a classic tricopter?

6 motors ,more power ,and no yaw tilt system , so mecanicaly more robust and simple

more reliable

redundency :
when you lost a motor , it's still flying,do that with a quad or a tri ...
Last edited by tazdevil; Nov 11, 2010 at 04:28 PM.
Nov 11, 2010, 01:10 PM
Registered User
rimshotcopter's Avatar
Quote:
Originally Posted by bob4432
why only top motors?
I will see if I can locate the thread.
Nov 11, 2010, 01:19 PM
Registered User
rimshotcopter's Avatar
Quote:
Originally Posted by bob4432
why only top motors?
Here is one of Rusty's post on the topic, you can locate more from this one.

https://www.rcgroups.com/forums/show...ostcount=13555
Nov 11, 2010, 01:46 PM
Registered User
Alexinparis's Avatar
Quote:
Originally Posted by jesolins
Hi Alex,
Any thoughts on how critical it is to mount the accelerometer in the center of the board/model? How is the accelerometer being calibrated for level?
Hi Jim,
I think the gyro position is not so important, but the acc position should be as closed as possible from the CG.
A small deviation should not affect too much the measurement, but imagine an acc positioned at the middle of an arm. It would measure every up and down movement of this arm and this measure might surpass its first aim: the magnitude measurement.

Quote:
Also what can we change in the code to allow more scaling/spread for the accelerometer P than its current 3-4? It would be nice to be able to have finer adjustments for it.
I don't really catch your question.
What is constrained between 3-4 ?
Are you waiting for more granularity in P I D GUI settings ?
Are you expecting scaling possibilities to the graph in the GUI ?
Nov 11, 2010, 02:20 PM
Registered User
Alexinparis's Avatar
Quote:
Originally Posted by jesolins
How is the accelerometer being calibrated for level?
It's done:
- at the initialization, when you power on the system => the multi must but as flat as possible to avoid to trim after.
- on demand with RC stick combination.

The gyro calibration is done also at the same time.
I know this is not the best way to do because the trim position will change every time a new calibration is done on the ACC.
I'm thinking about a more static approach with no more calibration at the initialization and neutral ACC values stored in the EEPROM.
Nov 11, 2010, 02:21 PM
Registered User
Alexinparis's Avatar
Quote:
Originally Posted by tazdevil
Good news ..!

I built my y6 yesterday, just need to solder all the esc to test it

picture later, thanx for your feed back Warthox
I really hope this version will be ok
Nov 11, 2010, 02:28 PM
Registered User
Alexinparis's Avatar
Quote:
Originally Posted by Bob K
I am looking to build a light weight aerobatic tricopter.
( I think I am in the right place )

Motor questions:

Is the turnigy 2204 1400kV better than the Turnigy 3020 1200kV motor?

( Alex's recommended motors )
I firstly used Turnigy 3020 1200kV motors.
They are probably better balanced and have better bearings than the turnigy 2204 1400kV.
But their wires are very breakable, that's why I switch after to turnigy 2204 1400kV that are almost unbreakable.
Nov 11, 2010, 02:35 PM
Registered User
Alexinparis's Avatar
Quote:
Originally Posted by RoGuE_StreaK
A point that I think needs some clarification, which may help improve the use of the NK; what exactly is "auto stable mode" defined as?

My interpretation of it was that if you release the sticks, the accel/NK will take over and attempt to return the 'copter to a level attitude. But from re-reading Bob's experience, it sounds to me like it's constantly trying to level out? Have I misinterpreted this?
On acro mode: the stick deviation for all axis defines the angular rate (deg/s) of the changing attitude.

On stable mode: the stick deviation defines an absolute angle (deg). That's why is you want to go forward, you need to permanently put your pitch stick up. If you want to have an horizontal attitude, you just have to release everything.
In this mode there is no attenuation of the stabilization outside a "stick dead-band". It is permanently activated.
Nov 11, 2010, 02:36 PM
Registered User
Quote:
Originally Posted by Alexinparis
I really hope this version will be ok


IT IS!!!

i did a little testflight in the garage because its dark and it rains.
and wow, hover with 15% throttle!!!

will upload a video...
Nov 11, 2010, 03:47 PM
Registered User
Alexinparis's Avatar
Quote:
Originally Posted by warthox
pics after the test flight
cool, nothing is broken
How stable it is regarding the other multiwii you have ?
Nov 11, 2010, 04:05 PM
Registered User
berkely's Avatar
Quote:
Originally Posted by warthox
IT IS!!!

i did a little testflight in the garage because its dark and it rains.
and wow, hover with 15% throttle!!!

will upload a video...
Congratz Warthox & Alex!

Few details, is that a 450 landing gear & props, EPP0845 CW & CCW from the mikrocontroller shop?
Nov 11, 2010, 04:07 PM
master of the universe
captaingeek's Avatar
any wana swarm on these or another similar motor:

$8.64 TURNIGY 28-22 1400kv

http://www.hobbycity.com/hobbycity/s...idProduct=4915

http://www.hobbyking.com/SwarmSale.asp?id=38196

and ESC's:

$7.32 Hobbyking SS Series 25-30A ESC

http://www.hobbycity.com/hobbycity/s...idProduct=6460

http://www.hobbyking.com/SwarmSale.asp?id=38203