About

Gender

Male


Location

Chongqing


About Me:

I am a Palyer of APM 2.5 ,I can du some CNC work .


Please tell us a bit about your UAV interest

I have installed the APM 2.5 on my 500 Hilecupter .


Hometown:

Chongqing China


Activity Feed

Cao Zhang replied to Randy's discussion ArduCopter-3.2 beta testing
"Dear sir : whould you please read this _____in  ArduCopter 2.x (traditional heli) (224) _____About ::
::
APM Heli V3.15 vs V2.73 _ The most we holp is :::
I holp 2.73 add INS_MPU6K_FILTER is the best ...…"
Aug 15, 2014
Cao Zhang posted a discussion
My English is limited , So I get the picture ...I holp 2.73 add INS_MPU6K_FILTER is the best ...2.73 after a long time Loiter the angle will not change .(it is very good) .3.15 can not .APM_3.15_vs_2.73.jpg
Aug 12, 2014
Cao Zhang posted a discussion
In last 3 weeks ,It failure on ALT_HOLD , But Now success :I find the reason failure : Important : The APM 3.1.2 IN3 (RC CH6)must near 1520uS ,so that it can ALT_HOLD success .I had adjusted the length of the Heli link rod , Angle +7 of main…
Mar 15, 2014
Cao Zhang replied to Pat's discussion Automatic Landing Success but the Loiter Mode is really awkward
"Congratulation  Automatic Landing Success ! 
By the way : Did your Heli ALT_HOLD very nice (V3.1.2 software) ?"
Mar 6, 2014
Cao Zhang replied to Cao Zhang's discussion Surprising the same 500Heli ALT_HOLD ok in 2.73 But failue in 3.1.2 Show Pictures&Photos & param file
"Whould you please write me a Email,So that I can reply you The New Logs file today.
 
And incidentally send a Heli V3.1.2 HEX file ,is more Thanks .(caosix@sohu.com)
 
Here is the new Logs file . Just Now Flight ...
 
Even In  stabilize mode and…"
Mar 5, 2014
Cao Zhang replied to Cao Zhang's discussion Surprising the same 500Heli ALT_HOLD ok in 2.73 But failue in 3.1.2 Show Pictures&Photos & param file
"Thank you very much . Here is the Logs .
 
The problem still existence . When I switch to ALT_HOLD mode,The Heli climb High and High ...
 
I guess may be the V3.1.2 HEX file be tamper by the internet service dealer .(such as DNS Mirror)
 
Can you…"
Mar 2, 2014
Cao Zhang posted a discussion
It is very surprising , The same 500Heli ,All no change But CH3 -- Esc connection .In 2.73 ALT_HOLD ok , But in 3.1.2 it Failue .param file here . Who can give me Help .ThankS .V3.12_500_0222_50Hz.paramV2.73_500_0222_50Hz.param
Feb 21, 2014
Cao Zhang posted a discussion
First Very Thinks 3.1.2 Heli Development Group !My 500 Heli can flight more stable .But when I switch to ALT_HOLD mode , the 500 Heliflight 2 meters to 4 meters hight and any more…
Feb 20, 2014
Cao Zhang replied to VITALIY's discussion APM 2.5-2.6 Arducopter V3.1 at GAUI 550 FBL
"Dear Sir : Can you upload your Param_file (APM) ? I learn it . Thanks !"
Feb 17, 2014
Cao Zhang posted a discussion
Dear sir : I must use BRUSHLESS Servo in my Heli ,it is long life. But it can only work on 760us mode,How can the APM 2.5 suppotr it ? Can we define a new params named : Servo_Type ,,, 0 = 1520us / 250Hz ,, 1 = 1520 / 333  ,, 3 = 1520 / 125 Hz ,, 4…
Aug 18, 2013
Cao Zhang replied to Cao Zhang's discussion I had to go back V2.7.3 Alt_Hold success.500 Heli (But it shake In V3.0.1 )
"On 3.0.1 the Rate D of "inertial navigation for vertical axis" can not tune !!(may have P,I)

So On 3.0.1 when I cut into ALT_HOLD and NAVigation , the Heli shake (up down) quickly , 0.7sec circle ."
Aug 6, 2013
Cao Zhang posted a discussion
Since (V2.9.1) "Improvements over 2.8.l include: 1) altitude hold improvements: a)inertial navigation for vertical axis " b)......I think that in a Heli , we need not "inertial navigation for vertical axis" ,it is easy shake ...But now I had to wait…
Aug 3, 2013
Cao Zhang replied to Josh Potter's discussion 500 heli on APM 3.0.0 code flying great!
"Dear sir : I have a same 500 Heli ,  It shake when I cut in  AltHold mode , stable mode work OK . Can you upload your param file ?? Thanks ."
Aug 1, 2013
Cao Zhang left a comment on ArduCopter User Group
"A problem of the 500 helicopter at AltHold mode (APM 2.5+  V3.0.1),it shake .Please see the video  21sec and 30sec . No PID can be adjusted for improve this .___Video at here___http://www.tudou.com/programs/view/LAyuowFIbY4/?phd=1"
Jul 24, 2013
Cao Zhang posted photos
Jul 24, 2013