https://www.xtremepowersystems.net/forum/ Tue, 21 Apr 2026 18:28:14 +0000 MyBB https://www.xtremepowersystems.net/forum/showthread.php?tid=114 Mon, 22 Jul 2024 11:11:56 -0400 Falco]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=114
This past weekend I was out (again a hot 85 degree day) and tried to fly 71” Slick about mid day after 3 previous flights.  I experienced the same laggy choppy servo movements.  This time I immediately switched to the funjet and had the same issue making me think its an issue with the XPS module.  I wish I had then immediately switched to my small heli with a Spektrum rx (to rule out the radio) but this didn’t occur to me.  I later (same day) flew the heli for several flights and had no issue.  Both sessions were hot sunny days and I sometimes leave the radio on while changing packs.   Till I resolve this issue I don’t feel confident in using my XPS equipment.  Do these symptoms sound familiar?  Could this be a heat issue or just a failing module?  I see the JR modules are out of stock.  What are my options?  Thanks for any assistance.]]>
This past weekend I was out (again a hot 85 degree day) and tried to fly 71” Slick about mid day after 3 previous flights.  I experienced the same laggy choppy servo movements.  This time I immediately switched to the funjet and had the same issue making me think its an issue with the XPS module.  I wish I had then immediately switched to my small heli with a Spektrum rx (to rule out the radio) but this didn’t occur to me.  I later (same day) flew the heli for several flights and had no issue.  Both sessions were hot sunny days and I sometimes leave the radio on while changing packs.   Till I resolve this issue I don’t feel confident in using my XPS equipment.  Do these symptoms sound familiar?  Could this be a heat issue or just a failing module?  I see the JR modules are out of stock.  What are my options?  Thanks for any assistance.]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=103 Mon, 26 Feb 2024 16:49:48 -0500 flyingw]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=103
What is the safe voltage range for the XPS-J1 module?

The reason I am asking is because I have the XPS-J1 installed in a Taranis transmitter body.  Most of the models in that Taranis use the XJT-D16 protocol, but two of them are configured to send SBUS out (for DragonLink) through the external module bay into which the XPS-J1 is currently installed.  The Taranis indicates that the voltage for its SBUS output is at the battery voltage, around eight volts.

If I were to accidentally change to a model that uses SBUS while the XPS-J1 is still installed, would the SBUS signal and voltage levels damage the XPS-J1? 

Thank you,

Paul]]>
What is the safe voltage range for the XPS-J1 module?

The reason I am asking is because I have the XPS-J1 installed in a Taranis transmitter body.  Most of the models in that Taranis use the XJT-D16 protocol, but two of them are configured to send SBUS out (for DragonLink) through the external module bay into which the XPS-J1 is currently installed.  The Taranis indicates that the voltage for its SBUS output is at the battery voltage, around eight volts.

If I were to accidentally change to a model that uses SBUS while the XPS-J1 is still installed, would the SBUS signal and voltage levels damage the XPS-J1? 

Thank you,

Paul]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=102 Mon, 26 Feb 2024 12:54:07 -0500 flyingw]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=102
When I use the XDP to review the settings on my two XPS-J1 transmitter modules, I get this error message:


  xps-j1-message.JPG (Size: 35.45 KB / Downloads: 5)

Note that the radio control function works perfectly, and I did not reset the module to defaults as the message says.

Is it just an "out of date" situation, or is there something really wrong and I need to reset to default and program again?

Thanks,

Paul]]>
When I use the XDP to review the settings on my two XPS-J1 transmitter modules, I get this error message:


  xps-j1-message.JPG (Size: 35.45 KB / Downloads: 5)

Note that the radio control function works perfectly, and I did not reset the module to defaults as the message says.

Is it just an "out of date" situation, or is there something really wrong and I need to reset to default and program again?

Thanks,

Paul]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=70 Thu, 29 Dec 2022 01:42:28 -0500 adnapak]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=70 Can go back to 2.7 but rather not.

Have been sucessfully binding and flying an RM TX16S with Edge 2.7 and XPS mode across 6 different nanos.
One of my models needs 12 ch, so XPS is the best answer.
Using prior versions of Edge and must confess I didn't range test after upgrading to 2.7 but all seemed good.

Then upgraded to 2.8 nightly 2133d42b and can no longer bind as XPS mode no longer functions. Seems that comms fail to Ext module.

Reverted to PPM 8 Ch in Tx changed JR module to PPM and successfully bound  after resetting the nano, but the range test fails at 45 feet with the button pushed in.  I have tried different nano's and different JR modules.
Flew an old model to test and have a video of intermittent loss of control, but got the model down.

Are there any changes you are aware of, or any suggestions before I go hunting?

Regards for 2023, may it be a better year.]]> Can go back to 2.7 but rather not.

Have been sucessfully binding and flying an RM TX16S with Edge 2.7 and XPS mode across 6 different nanos.
One of my models needs 12 ch, so XPS is the best answer.
Using prior versions of Edge and must confess I didn't range test after upgrading to 2.7 but all seemed good.

Then upgraded to 2.8 nightly 2133d42b and can no longer bind as XPS mode no longer functions. Seems that comms fail to Ext module.

Reverted to PPM 8 Ch in Tx changed JR module to PPM and successfully bound  after resetting the nano, but the range test fails at 45 feet with the button pushed in.  I have tried different nano's and different JR modules.
Flew an old model to test and have a video of intermittent loss of control, but got the model down.

Are there any changes you are aware of, or any suggestions before I go hunting?

Regards for 2023, may it be a better year.]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=65 Mon, 03 Oct 2022 13:32:42 -0400 j_whitney]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=65
Power on Nano, add binding plug, solid red, remove binding plug, rapid red flash
Power on the Tx holding the prog button in - when power is fully on, release the prog - LED goes solid orange

Do I need to change a setting on either the Nano or the Tx?]]>
Power on Nano, add binding plug, solid red, remove binding plug, rapid red flash
Power on the Tx holding the prog button in - when power is fully on, release the prog - LED goes solid orange

Do I need to change a setting on either the Nano or the Tx?]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=61 Sun, 14 Aug 2022 18:17:21 -0400 Falco]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=61 https://www.xtremepowersystems.net/forum/showthread.php?tid=58 Tue, 07 Jun 2022 00:57:24 -0400 adnapak]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=58 Or a well known European dedicated 2.4 brand flying concurrently.

Maybe we can get a view from your knowledge.

This is out of the ballpark, but some are having trouble with loss of signal to Rx on Tx16S internal configuration.
Total loss of control and spiral in from level flight. Failsafe set on one occasion only, so doesn't seem a factor.
Doubtful that the Tx is a problem, common to 3 different Tx's.
Just who is using our R/C bandwidth? Everything from toys to licensed UAV. 
Increasing 2.4 activity in a rural zone, farming, water control, etc, etc.

Possible causes, band width, batteries.

1. Batteries are a well known make, A123 type with internal charge control, not dual, load test OK after crash.
2. Many flights successful prior to crashes.
3. Postulated that 2.4 is becoming overused, and users are running out of band wriggle room. 

So, do you have any views on producing dual band 2.4/9 mHz or just 9 mHz to improve the odds.
Or is this dual band idea just a blind alley, down which we don't need to go?

Regards,]]> Or a well known European dedicated 2.4 brand flying concurrently.

Maybe we can get a view from your knowledge.

This is out of the ballpark, but some are having trouble with loss of signal to Rx on Tx16S internal configuration.
Total loss of control and spiral in from level flight. Failsafe set on one occasion only, so doesn't seem a factor.
Doubtful that the Tx is a problem, common to 3 different Tx's.
Just who is using our R/C bandwidth? Everything from toys to licensed UAV. 
Increasing 2.4 activity in a rural zone, farming, water control, etc, etc.

Possible causes, band width, batteries.

1. Batteries are a well known make, A123 type with internal charge control, not dual, load test OK after crash.
2. Many flights successful prior to crashes.
3. Postulated that 2.4 is becoming overused, and users are running out of band wriggle room. 

So, do you have any views on producing dual band 2.4/9 mHz or just 9 mHz to improve the odds.
Or is this dual band idea just a blind alley, down which we don't need to go?

Regards,]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=57 Thu, 28 Apr 2022 23:57:00 -0400 adnapak]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=57
Need more channels.
Radiomaster TX16S in XJT can output 16 channels.
J1 Module handles this, that's great.
Radiomaster TX16S in PPM can output 16 channels.
Recall that the J1 Module will only handle 8 Channels. 
To refresh my memory is this correct?
I can't find a reference to it, time to update notes.

Regards,]]>
Need more channels.
Radiomaster TX16S in XJT can output 16 channels.
J1 Module handles this, that's great.
Radiomaster TX16S in PPM can output 16 channels.
Recall that the J1 Module will only handle 8 Channels. 
To refresh my memory is this correct?
I can't find a reference to it, time to update notes.

Regards,]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=56 Wed, 09 Mar 2022 21:33:14 -0500 adnapak]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=56 I need 10ch to an X10/16, but as I understand only 9ch can be output from the current JR module using PPM9.
10ch can be output using SPCM, but the according to the doco the module can not handle the modulation.
Was ever an upgrade done to enable this?
Also does the RFU accept SPCM?
Assumed that Nano's won't.

Rather think that this may be the end of the road for my JR Tx, but modules work well in Taranis/Radiomaster.
Seems like Tx modules might be a dying breed


Regards,]]> I need 10ch to an X10/16, but as I understand only 9ch can be output from the current JR module using PPM9.
10ch can be output using SPCM, but the according to the doco the module can not handle the modulation.
Was ever an upgrade done to enable this?
Also does the RFU accept SPCM?
Assumed that Nano's won't.

Rather think that this may be the end of the road for my JR Tx, but modules work well in Taranis/Radiomaster.
Seems like Tx modules might be a dying breed


Regards,]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=55 Tue, 08 Mar 2022 07:44:17 -0500 Carter]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=55
The new FrSky X20 series of radios did away with the JR module bay and now have what they call a "Lite" module bay which is smaller.

I am currently using an X10S with your JR module and Nano's for receivers in it, but I'm locked out of that arrangement with my new X20S.

Does XPS have any plans for a TX module that will fit the Lite module bay of the X20S?]]>
The new FrSky X20 series of radios did away with the JR module bay and now have what they call a "Lite" module bay which is smaller.

I am currently using an X10S with your JR module and Nano's for receivers in it, but I'm locked out of that arrangement with my new X20S.

Does XPS have any plans for a TX module that will fit the Lite module bay of the X20S?]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=54 Sun, 20 Feb 2022 12:08:34 -0500 Charlie Blakemore]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=54 Please advise if xps have an internal module for a JR XG8 TX. I don't have a XG8. I'm asking for a friend who is having problems with some sort of lockout issues. 
. I also see that the XG8 TX battery is only a 2 cell life. Seems od to me that a TX would use such a low voltage.?

Many thanks all.]]> Please advise if xps have an internal module for a JR XG8 TX. I don't have a XG8. I'm asking for a friend who is having problems with some sort of lockout issues. 
. I also see that the XG8 TX battery is only a 2 cell life. Seems od to me that a TX would use such a low voltage.?

Many thanks all.]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=41 Sun, 27 Jun 2021 17:36:57 -0400 thebluemax]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=41
Looking at this thread in RCG, https://www.rcgroups.com/forums/showthre...-XG11MV-Tx

I saw this in post numbers 4 and 5

Post number 4 by Antic Bipe
Hi Jim, does the XPS JR 11X module support all 11 channels when using the DSM modulation? Your module will however require an external aerial if used in the XG11MV. 

Post number 5 by you
Yes, it does support all 11 channels.

I am not sure if they use serial (115.2K baud) like some of the DSM modules require, or the manchester encoding that the JR11x uses.


So my question is could install your JR-11X internal module into the XPS-J1 case upgrade w/antenna connector and use that module in the XG11-MV to use it with a RFU or Nano when the XG11MV uses DSM mode?
 
thanks,
Bill]]>
Looking at this thread in RCG, https://www.rcgroups.com/forums/showthre...-XG11MV-Tx

I saw this in post numbers 4 and 5

Post number 4 by Antic Bipe
Hi Jim, does the XPS JR 11X module support all 11 channels when using the DSM modulation? Your module will however require an external aerial if used in the XG11MV. 

Post number 5 by you
Yes, it does support all 11 channels.

I am not sure if they use serial (115.2K baud) like some of the DSM modules require, or the manchester encoding that the JR11x uses.


So my question is could install your JR-11X internal module into the XPS-J1 case upgrade w/antenna connector and use that module in the XG11-MV to use it with a RFU or Nano when the XG11MV uses DSM mode?
 
thanks,
Bill]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=33 Sun, 13 Jun 2021 09:19:57 -0400 Sunstateflier]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=33 https://www.xtremepowersystems.net/forum/showthread.php?tid=32 Wed, 09 Jun 2021 20:52:08 -0400 flyingw]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=32
I was thinking about the latency in my RC systems.

I believe that my Futaba 9C transmitter delivers a new set of channel positions by way of PPM to the XPS transmitter module every 22,5 millisecinds.

Using the XJT-D16 protocol the Taranis delivers a new set of channel positions to the XPS JR-type module every 18 milliseconds.

This means I gain about 4.5 milliseconds using XJT-D16.

If I happened to be using all 16 channels I would be about twice as fast with XJT-D16 than I would be with PPM.

Is that correct?

Thanks,

Paul]]>
I was thinking about the latency in my RC systems.

I believe that my Futaba 9C transmitter delivers a new set of channel positions by way of PPM to the XPS transmitter module every 22,5 millisecinds.

Using the XJT-D16 protocol the Taranis delivers a new set of channel positions to the XPS JR-type module every 18 milliseconds.

This means I gain about 4.5 milliseconds using XJT-D16.

If I happened to be using all 16 channels I would be about twice as fast with XJT-D16 than I would be with PPM.

Is that correct?

Thanks,

Paul]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=25 Mon, 10 May 2021 14:29:12 -0400 j_whitney]]> https://www.xtremepowersystems.net/forum/showthread.php?tid=25