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Old Jan 17, 2009, 07:19 PM
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earlwb's Avatar
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Beats me, I don't use the flying model simulator system.
I have a old FMS from years ago, but it never translated to how rc models flew in real life. I assume the newer FMS are more state of the art.
It has a trainer jack, but I haven't taught anyone to fly in ages, so I don't know if that works with anything either.
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Old Jan 17, 2009, 10:55 PM
Up in smoke!
BlueFFF's Avatar
Greenville, TX
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Well at least it has a trainer jack. More than I would expect for $30.
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Old Jan 19, 2009, 01:29 AM
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Berkie's Avatar
Australia, VIC, Rosebud
Joined Feb 2007
2,145 Posts
Quote:
Originally Posted by bkolbic
Originally Posted by Berkie
I'm running my Tx on 8 NiMh AAs at 9.6V
I think the Tx should be run on 12V.

However, although I have not had any problems - even receives well at 500 metres with the range check button down - I am wondering if 9.6V may cause a problem in some situations?
Anyone know?


well, the reason why NiMh batery is 1.2V, is because the inner resistance is much lover than Alcalines. Therefore under load-(when they are supplying current), output voltages of both are similar (under load output voltage of Alkaline batt. drops down much more then NiMh). So dont worry NiMh batery will work
Aha, das ist interesting! I didn't know that, now I'm confident with the MiMh

Thanks mate.

Kev
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Old Jan 19, 2009, 04:31 PM
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keepitsimple's Avatar
The Netherlands, OV, Almelo
Joined Sep 2008
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Configuration interface for turborix 6ch 2.4Ghz radio

I am new on this forum.
I received my 2.4Ghz one week ago but did not yet fly (with) it.
I also installed the t6config.exe configuration tool.
Everything works fine and looks good.
However, I don't like the configuration tools, its rubbish.
So I decided to write my own configuration tool.
I Analyised the serial data to and from the transmitter.
Maybe someone could write a Pocket PC application , that could be very usefull in the field.
See following specification of the data:

/************************************************** ************************************************** *************
Description of Turborix 2.4Ghz Programmable Radio Gear Channel Data/Settings array's
/************************************************** ************************************************** *************

Baudrate is 115kbd
serial data : 8 bit, noparity, nohandshake

Channel data is send by transmitter approx every 20mSec.
Data burst duration (90uSec * 18 Bytes) is approx 1.6 mSec


Description of Channel data array ( 18 bytes )
------------------------------------------------------------------------------------------------------------------
index | description | Values
------------------------------------------------------------------------------------------------------------------
0 : header0 = 85
1 : header1 = 252
2 : high_byte of (ch1+1000)
3 : low_byte of (ch1+1000)
4 : high_byte of (ch2+1000)
5 : low_byte of (ch2+1000)
6 : high_byte of (ch3+1000)
7 : low_byte of (ch3+1000)
8 : high_byte of (ch4+1000)
9 : low_byte of (ch4+1000)
10: high_byte of (ch5+1000)
11: low_byte of (ch5+1000)
12: high_byte of (ch6+1000)
13: low_byte of (ch6+1000)
14: high_byte of 2044-(ch3+1000) !
15: low_byte of 2044-(ch3+1000) !
16: high_byte of checksum
17: low_byte of checksum


high_byte -> (Channelvalue + 1000) / 256
low_byte -> (Channelvalue + 1000) mod 256
checksum -> sum of bytes 2 to 15


/************************************************** ************************************************** *************
Description of Turborix 2.4Ghz Programmable Radio Gear Settings Data array ( 69 bytes )
------------------------------------------------------------------------------------------------------------------
Settings 10,11,12 and 25 to 44 are only for helicopter



------------------------------------------------------------------------------------------------------------------
index | description | Values
------------------------------------------------------------------------------------------------------------------
0 HeaderByte 1 -> always 85
1 HeaderByte 2 -> 253 in case of receiving settings from device ( query = 85,250,0 )
-> 255 in case of sending settings to device
------------------------------------------------------------------------------------------------------------------
2 Model stick configuration -> high_nib(4..7) : Model > 1=0x0* 2=0x1* 3=0x2* 4=0x3*
-> low_nib (0..3) : Type > ACRO=0x*0 H-120=0x*1 H-90=0x*2 H-140=0x*3
------------------------------------------------------------------------------------------------------------------
3 CH1 - CH6 reverse bits -> b0..b5 <> Ch1..Ch6 normal=0 reverse=1
------------------------------------------------------------------------------------------------------------------
4 CH1 DualRate ON value -> 0..100%
5 CH1 DualRate OFF value -> 0..100%
6 CH2 DualRate ON value -> 0..100%
7 CH2 DualRate OFF value -> 0..100%
8 CH4 DualRate ON value -> 0..100%
9 CH4 DualRate OFF value -> 0..100%
------------------------------------------------------------------------------------------------------------------

helicopter (10,11,12)
------------------------------------------------------------------------------------------------------------------
10 Swash AFR CH1 -> -100..+100 (two's complement format > 0x9c..0x64)
11 Swash AFR CH2 -> -100..+100 (two's complement format > 0x9c..0x64)
12 Swash AFR CH6 -> -100..+100 (two's complement format > 0x9c..0x64)
------------------------------------------------------------------------------------------------------------------


------------------------------------------------------------------------------------------------------------------
13 CH1 Endpoint 1 -> 0..120%
14 CH1 Endpoint 2 -> 0..120%
15 CH2 Endpoint 1 -> 0..120%
16 CH2 Endpoint 2 -> 0..120%
17 CH3 Endpoint 1 -> 0..120%
18 CH3 Endpoint 2 -> 0..120%
19 CH4 Endpoint 1 -> 0..120%
20 CH4 Endpoint 2 -> 0..120%
21 CH5 Endpoint 1 -> 0..120%
22 CH5 Endpoint 2 -> 0..120%
23 CH6 Endpoint 1 -> 0..120%
24 CH6 Endpoint 2 -> 0..120%
------------------------------------------------------------------------------------------------------------------

helicopter (24..44)
------------------------------------------------------------------------------------------------------------------
25 Throttle Curve EP0 NORMAL -> 0..100%
26 Throttle Curve EP0 ID -> 0..100%
27 Throttle Curve EP1 NORMAL -> 0..100%
28 Throttle Curve EP1 ID -> 0..100%
29 Throttle Curve EP2 NORMAL -> 0..100%
30 Throttle Curve EP2 ID -> 0..100%
31 Throttle Curve EP3 NORMAL -> 0..100%
32 Throttle Curve EP3 ID -> 0..100%
33 Throttle Curve EP4 NORMAL -> 0..100%
34 Throttle Curve EP4 ID -> 0..100%
------------------------------------------------------------------------------------------------------------------
35 Pitch Curve EP0 NORMAL -> 0..100%
36 Pitch Curve EP0 ID -> 0..100%
37 Pitch Curve EP1 NORMAL -> 0..100%
38 Pitch Curve EP1 ID -> 0..100%
39 Pitch Curve EP2 NORMAL -> 0..100%
40 Pitch Curve EP2 ID -> 0..100%
41 Pitch Curve EP3 NORMAL -> 0..100%
42 Pitch Curve EP3 ID -> 0..100%
43 Pitch Curve EP4 NORMAL -> 0..100%
44 Pitch Curve EP4 ID -> 0..100%
------------------------------------------------------------------------------------------------------------------


------------------------------------------------------------------------------------------------------------------
45 CH1 SubTrim -> -120..+120 (two's complement format > 0x88 - 0x78 )
46 CH2 SubTrim -> -120..+120 (two's complement format > 0x88 - 0x78 )
47 CH3 SubTrim -> -120..+120 (two's complement format > 0x88 - 0x78 )
48 CH4 SubTrim -> -120..+120 (two's complement format > 0x88 - 0x78 )
49 CH5 SubTrim -> -120..+120 (two's complement format > 0x88 - 0x78 )
50 CH6 SubTrim -> -120..+120 (two's complement format > 0x88 - 0x78 )
------------------------------------------------------------------------------------------------------------------
51 Mixer 1 source/destination -> low_nib=dest. high_nib=src. Value : 0..5=ch1..ch6 (6..7=VRA..VRB >source only)
52 Mixer 1 Up Rate -> -100..+100 (two's complement format > 0x9c..0x64)
53 Mixer 1 Down Rate -> -100..+100 (two's complement format > 0x9c..0x64)
54 Mixer 1 switch -> 0=SWA 1=SWB 2=ON 3=OFF
55 Mixer 2 source/destination -> low_nib=dest. high_nib=src. Value : 0..5=ch1..ch6 (6..7=VRA..VRB >source only)
56 Mixer 2 Up Rate -> -100..+100 (two's complement format > 0x9c..0x64)
57 Mixer 2 Down Rate -> -100..+100 (two's complement format > 0x9c..0x64)
58 Mixer 2 switch -> 0=SWA 1=SWB 2=ON 3=OFF
59 Mixer 3 source/destination -> low_nib=dest. high_nib=src. Value : 0..5=ch1..ch6 (6..7=VRA..VRB >source only)
60 Mixer 3 Up Rate -> -100..+100 (two's complement format > 0x9c..0x64)
61 Mixer 3 Down Rate -> -100..+100 (two's complement format > 0x9c..0x64)
62 Mixer 3 switch -> 0=SWA 1=SWB 2=ON 3=OFF
------------------------------------------------------------------------------------------------------------------
63 Switch A function select -> 0=NULL 1=DualRate 2=throttlecutoff 3=NORMAL/ID
64 Switch B function select -> 0=NULL 1=DualRate 2=throttlecutoff 3=NORMAL/ID
------------------------------------------------------------------------------------------------------------------
65 Variable A function select -> 0=NULL 1=pitajdust
66 Variable B function select -> 0=NULL 1=pitajdust
------------------------------------------------------------------------------------------------------------------
67 Checksum High Byte -> sum(byte2..byte66) / 256
68 Checksum Low Byte -> sum(byte2..byte66) mod 256
------------------------------------------------------------------------------------------------------------------
************************************************** ************************************************** ***************/

I already wrote a small application "for airplane only" that works fine.





If you look closely you can see how to map VR(A) and VR(B) to Channel 5 and Channel 6.
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Last edited by keepitsimple; Jan 19, 2009 at 05:45 PM.
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Old Jan 19, 2009, 07:39 PM
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Lead Wings's Avatar
Perth, Australia
Joined Apr 2007
482 Posts
Converting modes

Sorry just noticed EarlWB had already posted some info on doing this - so this is a bit of a repeat
-------------------------------
Have just got mine which was mode 1 and I wanted mode 2, so thought I would do a how-to.

Converting modes with this radio is easy, as there are no fixed channel assignments – so you just change the spring and ratchets over, change the plugs that your servos and throttle is plugged into on the Rx and your off.

It too about 10 minutes to do mine (including searching for a screw that I dropped)

So step by step:
  1. Open up the back of the box by removing the 4 screws on the back
  2. Unplug the lead to the battery case and put to one side
  3. Locate the throttle ratchet on one gimbal, and the centring spring for the elevator on the other. Easiest way may be to move the sticks and look from the back
  4. Remove the ratchet on the throttle (one screw)
  5. Remove the centring spring form the other side. This can be removed by just popping the spring off the tensioning adjuster then fishing the bits out, or by pulling the gimbal apart (see below)
  6. You should then have ratchet and screw, and centring arm, centring spring and spring tension adjuster (see photo)
  7. To insert the tensioning spring into the other gimbal, it is easiest to remove the gimbal from the case – simply unscrew the three screws from the from of the case (note the forth screw is a fake – don’t try to unscrew this, it is just moulded plastic)
  8. Remove the side of the gimbal by unscrewing 2 screws, then pull the side of the gimbal off
  9. Insert centring arm, centring spring and spring tension adjuster
  10. Put side of gimbal back on and make sure it moves freely and centres OK
  11. Screw gimbal back into case
  12. Check tension and adjust to taste
  13. Plug battery lead back in
  14. Test with Rx
  15. Put back on
  16. Go fly
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Last edited by Lead Wings; Jan 19, 2009 at 08:46 PM.
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Old Jan 19, 2009, 07:43 PM
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Perth, Australia
Joined Apr 2007
482 Posts
2.4 GHz hack donor??

One of the reasons I wanted to get my hands on one of these was to see if it could make a suitable hack donor for a 6 channel 36 MHz FM computer radio I already have – ie all the functionality of the computer radio without the glitches.

In pulling the radio apart, the first thing I noticed was that the 2.4 GHz RF module is tiny – you can see by the attached photo. I initially struggled finding something small and generic enough to put in perspective – so finally settled on a AA battery, and as you can see it’s quite a bit smaller than that.

The board has www.flyskychina.com etched into it, so that confirms who made it.

It also has what looks like mini aerial etched into the PCB (circled in the photo below) – my guesses are either this is the aerial if used in cheaper/shorter range models, or it is used for sampling 2.4 GHz and making sure the selected band is clear before locking in.

On the back it has the following etched next to the wires from the main PCB:
  • PPM in
  • SW1 (assumed for range check switch?)
  • GND
  • CC_5V
The last one caused me some concern. I think my radio uses full battery voltage to the RF board (12V), where as it looks like this unit regulates the voltage down to 5V – which makes sense if it is using digital processing.

My electronics knowledge is pretty limited, but I’m guessing if I connect this to my computer set it will fry the RF module.

Anyone out there who knows more about electronics care to comment??
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Last edited by Lead Wings; Jan 20, 2009 at 12:55 AM.
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Old Jan 19, 2009, 07:49 PM
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Perth, Australia
Joined Apr 2007
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6 Channel Rx details

Here are some photos of the receiver. I think someone mentioned previously that you can operate the Rx without the satellite to save weight. You could also remove the case, but you would want to heat shrink it.

Weights:
  • Receiver and satellite – 12g
  • Receiver no satellite – 8g
  • Receiver no satellite no case – 5g
You can see the Rx is jam packed with chips – 2 levels of PCB’s. Sorry about the quality of the photos
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Last edited by Lead Wings; Jan 20, 2009 at 12:55 AM.
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Old Jan 19, 2009, 07:54 PM
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Perth, Australia
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Other photos

In case anyone is interested, here are some other photos.

Some observations:
  • The case has a pile of other holes etc in it covered by stickers – it is obviously a generic case for the 6 channel and even FM radios?
  • There is a mystery jumper on the main board – no idea what for
  • There were 2 wires that had been cut coming off the main board – odd for a mass produced item. This were from the plug going from the main board to the RF board
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Last edited by Lead Wings; Jan 20, 2009 at 12:56 AM.
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Old Jan 19, 2009, 07:56 PM
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Perth, Australia
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Trainer Board

Photos of trainer connection.

Note the trainer PCB has some “squiggles” (very technical term) etched into it – on the other side of the board it has them labelled as L2, L3 etc. Isn’t L the designation for inductance?
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Old Jan 19, 2009, 09:14 PM
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Moab, Utah, USA
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Quote:
Originally Posted by Lead Wings
Photos of trainer connection.

Note the trainer PCB has some “squiggles” (very technical term) etched into it – on the other side of the board it has them labelled as L2, L3 etc. Isn’t L the designation for inductance?
Yes, those are inductors. At this frequency all that is needed to make an inductor is a few squiggles of pc line as you see. They are probably used as rf chokes to keep the rf frequency out of the trainer cord.

You can solve your voltage problem by connecting a 7805 voltage regulator between your transmitter supply and the rf module. You can get those at Radio Shack for about a buck and a quarter. They usually come with some sample schematics for connecting them.

Larry
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Old Jan 19, 2009, 10:56 PM
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PPM voltage

Thanks Larry.

Will the PPM signal also need to have it's voltage reduced? I think I read somewhere it is half a volt below the main voltage?
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Old Jan 20, 2009, 05:54 AM
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Lead Wings, that is interesting, as on my radio I still have those two wires that are cut on yours. So that implies that the two wires are redundant and not needed or something.
Adjacent to the bind pushbutton is a voltage regulator IC. It is the large three legged transistor like device. I didn't check it with a voltmeter though. I just assumed it was a 5v regulator IC like the 7805 types.

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Old Jan 20, 2009, 01:08 PM
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Great info, thanks. What RF chip does it use?
David.
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Old Jan 20, 2009, 06:14 PM
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Perth, Australia
Joined Apr 2007
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Quote:
Originally Posted by earlwb
Lead Wings, that is interesting, as on my radio I still have those two wires that are cut on yours. So that implies that the two wires are redundant and not needed or something.
Adjacent to the bind pushbutton is a voltage regulator IC. It is the large three legged transistor like device. I didn't check it with a voltmeter though. I just assumed it was a 5v regulator IC like the 7805 types.
Thanks EarlWB.

So it looks like it regulats down to 5V and operates off that. I wonder if that means that the issues of operating of NiCd/NiMh are actually irrelevent, as it takes the voltage straight down to 5V so diference between 12V and 9.6V from the batteries is moot? Or is the full battery voltage used elsewhere?

Interesting that the wires are still in yours - mine was the 4 channel no brain one from HC, was yours the 6 channel PC programmable one? Wonder where the wires go?
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Old Jan 20, 2009, 08:53 PM
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Mine only has 4 channels, no frills, like yours. They just didn't cut the wires though.

Yes I just checked and the voltage regulator with a multimeter and it is a 5v regulator. They have to drop the voltage to 5v, as the 8 bit microprocessor only works with 5v. The CPU specs I mentioned in my link earlier, do show that the CPU would be running at about 5v in order to use a 4mhz crystal for its clock frequency.

Now they could operate the rf module at a higher voltage, but I didn't check that.

The 4 wires on mine, from that connector, go to the 2.4ghz RF module.
The small connector with 4 wires (next to the larger connector with 12 wires) goes to the trainer jack. The larger 12 wire connector is to the pots on the two gimbals.
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Last edited by earlwb; Jan 20, 2009 at 09:09 PM. Reason: add more info
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