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Old Dec 28, 2012, 06:21 PM
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Horseman's Avatar
The Netherlands, FR
Joined Aug 2008
627 Posts
Graupner MX 20 Hott 1 servo Swash problem

Hi Guys,

I hope you can help me out.
I have a new MX 20 and I'm setting it up with a HelliCommand for my 600 size BlackHawk I'm building.

I need to program the swash as H1 or single servo.
That works but I have a limited stroke and I can not find the reason why

The Gas servo are attached at channel 6 the pitch are attached at channel 1
The Gas Limeter is not working because the gas servo has the complete trow but the pitch is stopping at -50% or +50% depends what I select "Pitch limeter Hinten or Pitch Limeter Vorne So I need to know how to adjust the pitch Limeter I guess
But I cant find where I can do that

The software version are 1.120 If that ring a bell .
It a great device but I'm struggling now.....

Regards,

Jan,
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Old Dec 29, 2012, 02:51 PM
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Slovenia
Joined Feb 2011
834 Posts
I have serious range problems with my MX-20 and Mx-16 HOTT.

I have a multirotor with 2 operators. One has MX-20 and one MX-16. And I get like 200m range when both radios start beeping.

Is there anything I could do? What is the best way to mount the antennas? I have them facing down and 90˘ angle.

I also have 2 video TX at 5.8 ghz if this is causing problems?

Thanks for the help.
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Old Dec 29, 2012, 02:59 PM
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Romania, Dolj, Craiova
Joined Sep 2007
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Quote:
Originally Posted by quadslo View Post
...What is the best way to mount the antennas? I have them facing down and 90˘ angle.

I also have 2 video TX at 5.8 ghz if this is causing problems?

Thanks for the help.
Like this /\ ? 90 degrees is too much, if you will approach them to about 30 degrees the results will be better.
Is there any metal/carbon object between Rx antennas and you? Landing gear ?

How is Tx antenna orientation ? It must be vertical, pointing whatever sky or ground.
If horizontal, than this is the reason.

5.8Ghz does not influence RC.
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Old Dec 31, 2012, 03:45 AM
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Horseman's Avatar
The Netherlands, FR
Joined Aug 2008
627 Posts
Quote:
Originally Posted by Horseman View Post
Hi Guys,

I hope you can help me out.
I have a new MX 20 and I'm setting it up with a HelliCommand for my 600 size BlackHawk I'm building.

I need to program the swash as H1 or single servo.
That works but I have a limited stroke and I can not find the reason why

The Gas servo are attached at channel 6 the pitch are attached at channel 1
The Gas Limeter is not working because the gas servo has the complete trow but the pitch is stopping at -50% or +50% depends what I select "Pitch limeter Hinten or Pitch Limeter Vorne So I need to know how to adjust the pitch Limeter I guess
But I cant find where I can do that

The software version are 1.120 If that ring a bell .
It a great device but I'm struggling now.....

Regards,

Jan,
Hi Guys,

The problem is solved with help from the Dutch model forum en the solution was simply reset the receiver, that was all

Greetings,

Jan,
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Old Jan 01, 2013, 07:19 AM
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PH-SVV's Avatar
Nederland, OV, Kampen
Joined Nov 2010
142 Posts
Groeten uit NL

Quote:
Originally Posted by Horseman View Post
Hi Guys,

The problem is solved with help from the Dutch model forum en the solution was simply reset the receiver, that was all

Greetings,

Jan,
Glad you fixed it

Happy flying in 2013 to all !

Greetings,
Sander
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Old Jan 03, 2013, 08:40 AM
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nicklas's Avatar
Trollhattan, Sweden
Joined Oct 2004
2 Posts
tried to update my MX-16 transmitter with “MX-16_1v722_English” which failed as it stoped during the update. I need to re-flash with “gr_MX-16_1v50_ht.bin”, but I can’t find the file on Graupner’s homepage. Where I can download or find it?

Best regards,
Nicklas
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Old Jan 03, 2013, 09:38 AM
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nicklas's Avatar
Trollhattan, Sweden
Joined Oct 2004
2 Posts
Quote:
Originally Posted by nicklas View Post
tried to update my MX-16 transmitter with “MX-16_1v722_English” which failed as it stoped during the update. I need to re-flash with “gr_MX-16_1v50_ht.bin”, but I can’t find the file on Graupner’s homepage. Where I can download or find it?

Best regards,
Nicklas
it works now. I restated and did the Emergency
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Old Jan 03, 2013, 10:01 AM
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Joined Oct 2011
145 Posts
Hi guys,
does anyone know what's the protocol for external RF module?

I added FrSky to my MX-20, but it needs "RF module = EXT" and then ppm signal goes to DSC output. Unfortunately, it means I can't use my radio as teacher in teacher-student connection.

There is another option "RF module = SP" which should output some kind of Spektrum protocol - for connection of spektrum rf module. So I'd like to design that protocol to ppm converter, but I'm not able to break that protocol.

There should be 2 (4) combinations.
"SP 1, 6 channels", "SP 1, 8 channels" - for DSM2 RF module
"SP 2, 6 channels", "SP 2, 8 channels" - for DSMX RF module
according to this:
http://www.graupner.de/en/supportdet...2-13a0f39bd13d

"""Spektrum™ module software enhanced:
- Selection:
1 = DSM2™
2 = DSMX™
"""
and this:
http://rcfan.metnitzer.net/index.php?id=20
with PDF in right column: http://rcfan.metnitzer.net/download/...0-Spektrum.pdf
(these two are in german, not english)

Someone tried the opposite way - converting ppm to some spektrum protocol for some spektrum module. That protocol is described here:
http://www.rcgroups.com/forums/showp...33&postcount=8

but it's completely different from both protocols used (SP 1 and SP 2).

Do you know where I could find any information about such protocol? I tried sending email to Graupner (some time ago, different question), but I got no answer from them, so I gave up on asking graupner.
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Old Jan 03, 2013, 10:31 AM
g0t rabb1t?
ABLomas's Avatar
Lietuva, Vilnius
Joined Jul 2011
1,496 Posts
Quote:
Originally Posted by mihlit View Post
I added FrSky to my MX-20, but it needs "RF module = EXT" and then ppm signal goes to DSC output. Unfortunately, it means I can't use my radio as teacher in teacher-student connection.
Can't you just use them in parallel?
Anyway, do you use such combo often? Should be OK for daily flying... ;-)
Quote:
Originally Posted by mihlit View Post
I tried sending email to Graupner (some time ago, different question), but I got no answer from them, so I gave up on asking graupner.
Haha, where i did heard this... :P
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Old Jan 03, 2013, 11:50 AM
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Joined Oct 2011
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Quote:
Originally Posted by ABLomas View Post
Can't you just use them in parallel?
Anyway, do you use such combo often? Should be OK for daily flying... ;-)
The only source of ppm signal is DSC connector, it's the same connector where you put signal from student, so you can't use them together.

Yes, I use it often, except in gliders (vario issues). Before buying MX-20 I had hitec optic 6 with FrSky module, so I have FrSky equipment everywhere. Unfortunately 6 channels was no longer enough for me, so I just wanted some base platform where to put FrSky module to. So I use FrSky often, but after update, I can no longer teach people, because student port is occupied by frsky module (only source of ppm in the radio). That's why I want to build that sp->ppm converter.
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Old Jan 03, 2013, 03:59 PM
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Horseman's Avatar
The Netherlands, FR
Joined Aug 2008
627 Posts
Quote:
Originally Posted by nicklas View Post
tried to update my MX-16 transmitter with “MX-16_1v722_English” which failed as it stoped during the update. I need to re-flash with “gr_MX-16_1v50_ht.bin”, but I can’t find the file on Graupner’s homepage. Where I can download or find it?

Best regards,
Nicklas
Hi Nicklas,

I know you have solved your problem but If you need to upgrade for some reason then go here The hott-lounge if you use the complete downloads you get all the languages also.

Regards,

Jan,
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Old Jan 13, 2013, 02:34 PM
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Joined Oct 2011
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For those who would like to use FrSky together with MX-20/16/12, but don't know how to do it: http://mihlit.cz/blog/index.php/diln...hott-add-frsky
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Old Jan 16, 2013, 04:38 AM
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Norway, Oslo
Joined Oct 2003
38 Posts
The link doesn' work. Gets a "404"-error.
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Old Jan 16, 2013, 06:49 AM
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I just clicked the link and it works. This forum shortens long strings, so if you copied the text, that's why it could look broken.
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Old Jan 16, 2013, 07:52 AM
g0t rabb1t?
ABLomas's Avatar
Lietuva, Vilnius
Joined Jul 2011
1,496 Posts
Works for me too.
Great info, anyone needs my collection of HoTT RX? =)
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