Strange monitor display : RK Tx18S MPM radio

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solentlife
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Strange monitor display : RK Tx18S MPM radio

Post by solentlife » Fri Dec 30, 2022 9:58 am

Radioking TX18s
OTX 2.3.15 (latest)
MPM Module : 1.3.3.20 (latest)

No modifications or strange additions ....

Flys models well with no hint of problem ....

When setting up latest model ... 3D printed Sport Jet 50mm EDF ... I was using the Monitor function and noted that when moving Throttle stick (left Mode 2) ... the Elevator display showed interaction .... but model elevator was still ... no twitch nothing ...

Here's video :

https://youtu.be/ChoMkLTK8D8

Anyone else have this ????


solentlife
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Re: Strange monitor display : RK Tx18S MPM radio

Post by solentlife » Fri Dec 30, 2022 10:07 am

Just to clarify .... all sticks / pots / sliders have been calibrated as well to be sure.

I have a new throttle gimbal on order due to my breaking the tension bracket ... repaired - but think this is opportunity to replace with the Jumper T16 Hall assembly - supposed to be a better gimbal ....

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Kilrah
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Re: Strange monitor display : RK Tx18S MPM radio

Post by Kilrah » Fri Dec 30, 2022 10:35 am

Given the constistency it looks like you've explicitely got a mix set up to apply elevator compensation with throttle.

solentlife
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Re: Strange monitor display : RK Tx18S MPM radio

Post by solentlife » Sat Dec 31, 2022 3:50 pm

Update ...

Setting up more of the Sport Jet ....

Its a 4ch Rcvr with split ailerons / split elevator servos .... so to avoid having to rewire servo ... I have set :

Ch 1 = Ailerons via Y lead
Ch 2 = Elevator 1
Ch 3 = Throt
Ch 4 = Elevator 2 (reversed of course)

Interesting that when I tested .... I had servo movement on the model when moving throttle - something that I had not detected on other models. It was BOTH elevator servos moved Ch 2 + 4 .....

Now I am not happy .....

solentlife
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Re: Strange monitor display : RK Tx18S MPM radio

Post by solentlife » Sat Dec 31, 2022 3:50 pm

OK today ....

I've really been delving into my radio ....

Reset radio with clean SD card ... OTX 2.3.15 ..... no models / no scripts etc. Radio was already flashed with AETR FW correctly .. but re-installed

Installed EDGETX 2.8 .... clean

EdgeTX 2.8 with models etc from OTX SD card ..

Tried all sorts - in fact was afraid I was going to brick the radio ....

Conclusion :

1. It must be a hardware problem as it didn't matter what FW ... problem remained

2. Being used to OTX ... I found EDGETX annoying ....

I will wait arrival of my new Throttle gimbal ... install and see what happens. If no joy - then I may look at replacing with the RadioMaster vers2 ......


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Kilrah
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Re: Strange monitor display : RK Tx18S MPM radio

Post by Kilrah » Sat Dec 31, 2022 3:52 pm

Check hardware page / [ANAS], that's the raw stick input, if it moves unexpectedly there it's a hardware issue, if not it's the setup.

solentlife
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Re: Strange monitor display : RK Tx18S MPM radio

Post by solentlife » Sun Jan 01, 2023 9:35 am

Yep did the Hardware page ... its a hardware issue ....... so :

Today I got 'p......... off' with it ...

Took back of radio ... took out both gimbals ..... magnifying glass inspected all .... couldn't see anything chafed or wrong ....

Took hint from a previous reply and swapped them over ... they won't fit in the mounts though as the tension parts are 180deg and hit the sliders ....
Switched on ... BINGO !! No errors at all .....

Put all back together ..... closed up .... switched on ... NO ERRORS at all .....

I noticed one thing .... doing calibration again ... ALL centres then zero ... which was not as before ...
Also letting go sticks - zeros were precise and no 'flypast' ....

NOW I'M HAPPY !!

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bob195558
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Re: Strange monitor display : RK Tx18S MPM radio

Post by bob195558 » Thu Jan 05, 2023 2:57 pm

Maybe try ERSKYTX (erskyTx for RK TX18S): http://www.er9x.com/
Er9x on 9x radio, with Smartieparts Programmer and TelemetrEZ Board.
ErSky9x on Taranis, Sky9x, 9Xtreme radios.
3D-Printing: (https://openrcforums.com/forum/viewforum.php?f=129).

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Kilrah
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Re: Strange monitor display : RK Tx18S MPM radio

Post by Kilrah » Thu Jan 05, 2023 5:42 pm

bob195558 wrote:
Thu Jan 05, 2023 2:57 pm
Maybe try ERSKYTX (erskyTx for RK TX18S): http://www.er9x.com/
How is that going to help with what has been confirmed was a hardware problem, that's been solved now?

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bob195558
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Re: Strange monitor display : RK Tx18S MPM radio

Post by bob195558 » Thu Jan 05, 2023 8:53 pm

Sorry I missed that part, thank you for pointing it out, good job.
Er9x on 9x radio, with Smartieparts Programmer and TelemetrEZ Board.
ErSky9x on Taranis, Sky9x, 9Xtreme radios.
3D-Printing: (https://openrcforums.com/forum/viewforum.php?f=129).


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