RE: Walkera/Dragonfly/Esky 4ch transmitter/receiver technical review.  
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All Forums >> RC Helicopters >> Electric RC Helis >> Walkera Helis - Dragonfly, etc.. >> RE: Walkera/Dragonfly/Esky 4ch transmitter/receiver technical review.
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RE: Walkera/Dragonfly/Esky 4ch transmitter/receiver ... - 12/3/2007 5:29:54 AM   
Rdy12


 

Posts: 199
Joined: 11/13/2005
From: mpls, MN, USA
Status: offline 		Eh, I'll leave now. Clearly I've stumbled upon the "top-secret CIA coded information thread"

_____________________________

My heli could find a glitch in a haystack.

(in reply to jtspin)
       Post #: 76

RE: Walkera/Dragonfly/Esky 4ch transmitter/receiver ... - 12/3/2007 1:29:38 PM   
e1000


 

Posts: 24
Joined: 1/23/2007
From: san juan, ARGENTINA
Status: offline 		no, rdy12! dont leave! the more the merrier! we´re about to start a project, we're begginning with a custom mixer pic12f-based for a coaxial heli hughes is working with. The thing is, the components hughes has are not well suited for the job, so we are trying to do our own and tweak them to see if they are better. If youd like to participate, like to program, love to crash helis, or anything alike, please do participate! BTW, i apologyse, hughes and JT, ive disappeared a while.... tomorrow ill have my last-before-thesis exam, ive been preparing that... but after tuesday all come back with news.

cheers!

(in reply to Rdy12)
       Post #: 77

RE: Walkera/Dragonfly/Esky 4ch transmitter/receiver... - 12/3/2007 2:11:18 PM   
USHobbySupply


 

Posts: 1399
Joined: 7/12/2006
From: Takoma Park, MD, USA
Status: offline 		I love pic programming. I'm want to contribute! pm or email me please.

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Michael Bernstein, President, USHobbySupply
Please PM me if i miss your question in a thread.

(in reply to e1000)
       Post #: 78

RE: Walkera/Dragonfly/Esky 4ch transmitter/receiver... - 12/3/2007 2:13:20 PM   
huguesdb


 

Posts: 41
Joined: 4/29/2007
From: , SWITZERLAND
Status: offline 		OK e1000, that is acceptable as an excuse! lol Good luck, we will 'hold thumbs' for u.

rdy12, dont leave us alone in the cold! You must be wind or time.

I have also a few things to do which i should have done this weekend but did not.. no idea where the time went - maybe rdy12 can tell us?


Hugues

(in reply to e1000)
       Post #: 79

RE: Walkera/Dragonfly/Esky 4ch transmitter/receiver... - 12/3/2007 2:49:43 PM   
huguesdb


 

Posts: 41
Joined: 4/29/2007
From: , SWITZERLAND
Status: offline 		Welcome on board Michael. Nice to have such a distinguished member with us! We were getting lonely .

PM sent.

Have a nice day!
Hugues

(in reply to huguesdb)
       Post #: 80

RE: Walkera/Dragonfly/Esky 4ch transmitter/receiver... - 12/3/2007 4:22:32 PM   
GTX SlotCar



Posts: 2067
Joined: 10/7/2005
From: Gorham, ME, USA
Status: offline 		I have to admit that I've been watching this thread for some time, too, but mostly out of curiousity to see if any marketing or manufacturing possibilities come out of it. Wouldn't do anything without permission, though.


_____________________________

Gary
SuperSkids® www.super-skids.com

(in reply to huguesdb)
       Post #: 81

RE: Walkera/Dragonfly/Esky 4ch transmitter/receiver... - 12/3/2007 8:25:30 PM   
e1000


 

Posts: 24
Joined: 1/23/2007
From: san juan, ARGENTINA
Status: offline 		Hello GTX! Thats a possibility.... however, we've just started! We are doing this for fun, but, an extra income is never overlooked!
Ok, less joking, if you see improvements that can be made, things that can be changed or whatever, please feel free to point out or make some critic about it! We are at the design stage, so everythings changeable and we throw nothing! And please, do come often and collaborate!

e.

(in reply to GTX SlotCar)
       Post #: 82

RE: Walkera/Dragonfly/Esky 4ch transmitter/receiver ... - 12/5/2007 10:17:40 PM   
huguesdb


 

Posts: 41
Joined: 4/29/2007
From: , SWITZERLAND
Status: offline 		OK folks, e1000 has started a new thread exclusively for the coax controller.

Here it is, join us there:

http://www.rcuniverse.com/forum/m_6709036/anchors_6709036/mpage_1/key_/anchor/tm.htm#6709036



Hugues

(in reply to jtspin)
       Post #: 83

RE: Walkera/Dragonfly/Esky 4ch transmitter/receiver ... - 12/8/2007 4:05:58 AM   
Rdy12


 

Posts: 199
Joined: 11/13/2005
From: mpls, MN, USA
Status: offline 		Well, I'm befuddled by the the terminology, but considering the fact that I'm bored, I'll stick around Now that the coaxial heli issue is moving on to a different thread, let's get back to the piece of plastic that flys our birds. In case it hasn't been covered or if no one has noticed, the Tx itself is actually set up as an airplane radio with no heli hardwiring. The rx does that. I've done some work on this thing myself and found that it can fly a GWS Slow Stick with the stock Rx that it comes with just fine. Question: Is this the same with the 6ch CP Tx or does it have some heli programming?Also, please speak in a more widespread language because all I know is English and a bit of Espanol. Yo quiero un hamberguesa y no me gusta juevos.

_____________________________

My heli could find a glitch in a haystack.

(in reply to huguesdb)
       Post #: 84

RE: Walkera/Dragonfly/Esky 4ch transmitter/receiver... - 12/8/2007 3:41:45 PM   
e1000


 

Posts: 24
Joined: 1/23/2007
From: san juan, ARGENTINA
Status: offline 		sorry, RDY12. We'll try to have a less technical chit-chat.
Yes, the Tx is a normal Tx, at least, the walkera #4 stock has. It has, however, some particularities, for example, it transmits 9 channels, with 4 active and the other 5 stuck in minimum. Also, the PPM in not entirely standard, its a bit "special", some receivers may not woak with it. But, the 4 active channels dont have any mixing, any processing, or anything at all. Correspond exactly with the movement of the stick.
All the magic is done in the receiver: demodulation, mixing, gyro, ESC (wich, incidentally, is the way i think everything should be, so you have just one ontroller for everything...)... The thing is, for example for a walkera #4, its hard to find a standard 9 channel PPM transmitter... so you cant use any transmitter with the receiver.

(in reply to Rdy12)
       Post #: 85

RE: Walkera/Dragonfly/Esky 4ch transmitter/receiver... - 12/8/2007 5:10:58 PM   
GTX SlotCar



Posts: 2067
Joined: 10/7/2005
From: Gorham, ME, USA
Status: offline
quote:

ORIGINAL: e1000
....Also, the PPM in not entirely standard, its a bit "special", some receivers may not woak with it. .....



Would this have anything to do with the Zhen Hua 5 byte protocol it uses? I think some old Futaba radios used to use it.



_____________________________

Gary
SuperSkids® www.super-skids.com

(in reply to e1000)
       Post #: 86

RE: Walkera/Dragonfly/Esky 4ch transmitter/receiver... - 12/9/2007 6:16:56 AM   
e1000


 

Posts: 24
Joined: 1/23/2007
From: san juan, ARGENTINA
Status: offline 		No, i dont think thats it. As far as i have seen, this Zen Hua is a protocol for transmitting data to PC when using for simulating, for example. I was referring to the widht of the pulses walkera uses, they are different from standard PPM, although not very different... thats why some receivers work, and some others dont.
On the other side, this 5 byte protocol is a form of PCM. If a transmitter is transmitting PCM, it will not work with a PPM receiver, and vice-versa. I have not found a single person having a DF#4 and a PCM transmitter... if you know someone, please, invite him here, we can all learn from it.

(in reply to GTX SlotCar)
       Post #: 87

RE: Walkera/Dragonfly/Esky 4ch transmitter/receiver... - 12/9/2007 11:39:21 PM   
huguesdb


 

Posts: 41
Joined: 4/29/2007
From: , SWITZERLAND
Status: offline 		Interesting to compare with the Esky - the 4 channel 0404 PPM transmitter does no processing at alll and can be used to fly planes and other stuff. Its the one used for the Lama, comanche and Robins coax series. All the clever bits are done in the receiver - which is the famous 4-in-1.

On the CCCPM helis, like the Honeybee CP, King 2 and Belt CP, which all use a 6 channel PPM transmitter, all the processing is done in the transmitter so they cant be used for much else. Even the one for the CP (0706) cant be used for the King 2 (0706A). However, the reciver is the standard one which does no special processing.

So either way, the only way to have a single radio for all helis is to have a programmable one - not the cheapest solution initially but I now buy ARF models so that will slowly pay for itself.


Hugues

(in reply to e1000)
       Post #: 88

RE: Walkera/Dragonfly/Esky 4ch transmitter/receiver t... - 3/17/2008 2:51:43 PM   
yarongu


 

Posts: 3
Joined: 3/17/2008
From: , ISRAEL
Status: offline 		hi all ,

i just burn my 4-in-1 reciver

i found in this thread an image showing all the items in the receiver board:

[img=http://img84.imageshack.us/img84/3241/pcbgi7.jpg]

http://img84.imageshack.us/img84/3241/pcbgi7.jpg


the items that are burn in my board are the ones called "IR F713"

can someone tell me where i can buy them ?

what is the exact serial number ?


10x

(in reply to huguesdb)
       Post #: 89

RE: Walkera/Dragonfly/Esky 4ch transmitter/receiver... - 3/17/2008 4:33:57 PM