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Flyfish VX3.5 analog (for now)
#1
This is my fist build. It was so fun. My Girlfriend bought me the frame and ELRS RX for Christmas.
Volador VX3.5
JHEMCU GHF411-HD AIO 40A
Darwin 1504 3600kv motors
Rush Tank II Ultimate V2 5.8G 25/200/500/800mW
Lumenier AXII stubby
Happymodel EP1 ELRS
Caddx Ratel 2
2, 2.5 and 3 pitch props to try, starting with 2.
AUW with a GNB HV 850mah=225g
Green LED Racewire under the arms. 
She had her maiden! Flies great, but I know I will be tweaking things in BF and maybe bluejay.  Smile


[Image: 415786166_7423129867731795_8938631969483...e=6596E693]
[-] The following 3 users Like TheDude745's post:
  • brettbrandon, Pathfinder075, iFly4rotors
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#2
Marry her, she picked a good frame and she hasn't run a mile after you told her you were into RC kit. Tongue
Try Not, Do or Do Not
- Yoda

[-] The following 1 user Likes Pathfinder075's post:
  • TheDude745
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#3
(31-Dec-2023, 11:10 PM)Pathfinder075 Wrote: Marry her, she picked a good frame and she hasn't run a mile after you told her you were into RC kit. Tongue

I threw the Supafly tune on it and it works pretty well. 
Gonna try the 2.5 pitch props next. 
I really like the vtx power and being able to put it in pit mode at the push of a button. 
I have some video lines on screen and wonder if I need to twist some of the vtx cam wires to clean it up.
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#4
I do not see a capacitor listed in the parts and I can't see one in the pic. If you do not have one, you may be able to clean up the vtx by installing one.
[-] The following 1 user Likes brettbrandon's post:
  • iFly4rotors
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#5
(01-Jan-2024, 04:06 AM)brettbrandon Wrote: I do not see a capacitor listed in the parts and I can't see one in the pic. If you do not have one, you may be able to clean up the vtx by installing one.

It came with the aio and is tucked above the aio with clear shrink tube, and black shrink tube on the posts. The FC kinda lights it up. The aio also comes with a practice board to solder on. I just remember hearing about twisting certain wires with the negative wire and not the positive on some vtx wire routing. Not sure though.
[-] The following 1 user Likes TheDude745's post:
  • brettbrandon
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#6
Twisting the wires does help as far as interference is concerned. I think that when you twist them, the ground wire is sort of acting like a shield sort of like in a shielded audio cable.

I twist all the wires including the camera and motor wires. Any wires that have power running through them.
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#7
Here is a pic from one of my latest builds showing the camera, vtx, and motor wires twisted. I get virtually no vtx interference on this quad (it also has a capacitor)...

   
[-] The following 1 user Likes brettbrandon's post:
  • iFly4rotors
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#8
I don't really twist mine, but do run a cap on the power lead. If you are in an experimental mood, try dropping a small 100uf cap on the VTX power pads. it doesn't need to be a massive chunky cap since most VTX run from a 5V pad, so a 6.3V or 10V cap should be fine, if it runs from a 10V or larger BEC circuit, then size the cap accordingly. That should smooth the power going to the VTX. If you are still having issues though, i'd probably check the antenna and maybe try a different VTX and see if it was a hardware issue. Wink
Try Not, Do or Do Not
- Yoda

[-] The following 1 user Likes Pathfinder075's post:
  • iFly4rotors
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#9
(01-Jan-2024, 07:56 PM)brettbrandon Wrote: Here is a pic from one of my latest builds ...
In the photo I see damage to the wire that goes to the motor.
[-] The following 1 user Likes LiPoFly's post:
  • brettbrandon
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#10
(03-Jan-2024, 04:34 PM)LiPoFly Wrote: In the photo I see damage to the wire that goes to the motor.

I saw that myself and was worried but I have a much higher resolution pic and it is just some junk on the wire, no damage...
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#11
I did twist my cam and vtx wires and the horizontal lines are gone but still have minor wavy lines but I haven't got a chance to truly test it yet.
It does feel like an improvement.
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#12
(03-Jan-2024, 02:57 AM)Pathfinder075 Wrote: I don't really twist mine, but do run a cap on the power lead.  If you are in an experimental mood, try dropping a small 100uf cap on the VTX power pads.  it doesn't need to be a massive chunky cap since most VTX run from a 5V pad, so a 6.3V or 10V cap should be fine, if it runs from a 10V or larger BEC circuit, then size the cap accordingly.  That should smooth the power going to the VTX.  If you are still having issues though, i'd probably check the antenna and maybe try a different VTX and see if it was a hardware issue. Wink

Hi Pathfinder,

I had never thought about using a cap on the VTX power pads. Hmmm. 
Sounds like a good idea that I should try. Now, you have got me thinking.  Thinking

Installing a cap directly onto the 5V circuit like that would stabilize the entire rail. 
Hmmm. Yeah, I will have to give that a try. Good idea!  Thumbs Up  Thanks, Mate. 

Later, iFly   High Five
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