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Author Topic: V922  (Read 27116 times)

chris

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V922
« on: April 29, 2013, 00:04:14 »
See also my HiSKY/HT8 for 9x thread.

Attached is my ER9x model for the V922.  I have the HT8 set for Futaba mode.  Note this model has no "beginner" mode or even idle-down (ie. full 3D always).  To fly start with the F.MODE switch all the way up (ID0), move pitch/throttle to mid-stick, then switch F.MODE down one click to "1".  It will spin up to full throttle within a few seconds.  The throttle cut switch works but what I do is just flick the F.MODE switch all the way up, this is much faster than reaching for the throttle cut.

These are the settings used in the model:

PPM6CH400uSec
PPM FrLen16.5mSec
PPM Shift SelNEG
ELE DirectionINV
AIL DirectionINV
Swash Type120
Swash Ring100
ELE EXPO0%D/R47%
AIL EXPO0%D/R60%
CH1CYC150%
CH2CYC250%
CH3Throttle
CH4Rudder
CH6CYC350%
LIMIT CH3INV
LIMIT CH4INV
Throttleflat 100%
Pitch 68%


WLToys V922 tuning 3D


I have converted to brushless using the HK 14000kv motor and a modified HK XP-3A ESC that has new double-stacked FET's.  I'm using Hyperion 550 mAh batteries for about 6:30 minutes flight time.

I measured the PWM signal on the main motor FET gate. It appears to have an 80us cycle time which means 12.5 kHz signal. With a 9x/HT8 the PWM signal starts minimum throttle (18% duty cycle) at approximately -52% and is full throttle at around 39%. These are only approximate because of calibration and PPM timing differences between radios.

Attached to this thread is a custom version of BLHeli specifically built for the V922.  BLHeli normally only supports a maximum of 8kHz PWM on its signal wire but the V922 motor output runs at 12.5kHz.  What this does is make the throttle skip from 66% to 100% with no way to use any value in between.  My custom version of BLHeli multiplies the signal by 1.5 to bring the 8kHz calculations up to 12kHz and this makes the throttle perfectly linear.  Also attached are patch files that show the source changes I made.  I built versions using BLHeli 9.4 and 10.3.  I use 9.4 but the latest BLHeli is 10.3.

BLHeli 10.4 now supports 12kHz so no need to use my version of BLHeli unless you want to run an older version (I currently still use 9.4).




WLToys V922 brushless test 3D


New paper canopy, although I think I'm going to end up using this on my mCPX.  It's made with card stock which is a little too heavy for my liking (3.7g).  I'm going to try to make another with lighter materials.

« Last Edit: October 14, 2013, 16:38:00 by chris »

fantasy

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Re: V922
« Reply #1 on: August 27, 2013, 15:01:13 »
great chris

have you work with protocol nrf24l01 ?

chris

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Re: V922
« Reply #2 on: August 27, 2013, 15:14:14 »
No but supposedly the Deviation project is working on it. I'm not sure if it works yet but they did have some code finished last time I looked. However, I believe their first target was the V202 which uses the same NRF chipset but a different protocol than the V922/FBL100.

fantasy

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Re: V922
« Reply #3 on: September 06, 2013, 06:07:22 »
hello chris

Can you guide me compile program  BL heli  of sskaug ? 

i have dowload Silab IDE 8 bit microtronler , but i do not know use .  Can not compiler .

because i want change few pin of esc

ago, I have done this successfully with atmega8 . Now, esc use silab chip, it's difficult.

thank you very much , i wait ....

chris

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Re: V922
« Reply #4 on: September 06, 2013, 13:26:40 »
You need to install the Raisonance tools (Ride7 and RKit-51).  It is not necessary to "activate" the tools with a Raisonance license, just download and install.
http://forum.raisonance.com/viewtopic.php?id=5007

Make sure to install Ride7 first and change the installation directory to "C:\Raisonance".

After installing those you can run the "MakeHexfiles.bat" file in the BLHeli directory.
« Last Edit: September 06, 2013, 13:28:12 by chris »

fantasy

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Re: V922
« Reply #5 on: September 08, 2013, 01:44:59 »
hic hic

I have downloaded and installed  Ride7 and RKit-51   but i can not compiler

You say : " After installing those you can run the "MakeHexfiles.bat" file in the BLHeli directory " ..I enabled it, but no hex file?

chris

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Re: V922
« Reply #6 on: September 08, 2013, 01:46:09 »
What error messages do you get?

fantasy

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Re: V922
« Reply #7 on: September 08, 2013, 01:49:10 »
chirs , your web can not load picture size big , so  i upload picture on photobuket  . i will delete later




« Last Edit: September 08, 2013, 01:56:29 by fantasy »

chris

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Re: V922
« Reply #8 on: September 08, 2013, 01:50:30 »
What happens if you double click the "MakeHexFiles"?  It should run and build the hex files.  No need to open the Ride7 GUI.

fantasy

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Re: V922
« Reply #9 on: September 08, 2013, 01:55:24 »
it create folder  " Output "  --->  hex ---->   not  ?

chris

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Re: V922
« Reply #10 on: September 08, 2013, 01:59:01 »
You might have to open a command prompt then "cd" to the SiLabs directory and type "MakeHexFiles" then maybe you can see what error it is getting.

Did you install Ride7 in "C:\Raisonance"?

fantasy

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Re: V922
« Reply #11 on: September 08, 2013, 02:08:01 »
i install ride 7 ,then install rekit 51

picture


chris

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Re: V922
« Reply #12 on: September 08, 2013, 02:09:49 »
You have change the destination directory to "C:\Raisonance" or it won't work.

fantasy

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Re: V922
« Reply #13 on: September 08, 2013, 02:23:20 »
picture when i click   " maket file "


chris

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Re: V922
« Reply #14 on: September 08, 2013, 02:25:44 »
Can you scroll up to the beginning and see what it says.  It should say something like:
Path for Silabs IDE:
Path for Rasisonance:
Start compile ......

 


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