Wth?!?!??

[demonoid369]

So I have a flysky 2.4 and a fxr and a castle bec and a spektrum servo, well I wired it up and the servo is being glitchy as hell can not use tue trim to stop it, but did use the throttle trim to stop the motor from twitching also, red lights are flashing all across the fxr and not in any order. What is going on? I need this fixed before the comp!!! Help please

[demonoid369]

Someone? Is the fxr broken? What's going on? I know I have the bec installed correctly with the positive touching positive, etc...

[Charlie-III]

Is the BEC direct to the servo, or to the RX?
If the RX, is the red from the ESC removed from the RX?
Is the RX antenna away from motor wires & ESC?

[demonoid369]

First pic us the bec unplugged and the extension wire(with red wire removed) off so its just the esc, battery, and servo and motor. Even with that, it twitches.
The bec is connected to the battery posts on the fxr and goes into the auxiliary channel on the 2.4.

[demonoid369]

This is what the fxr is showing with the battery connected

I noticed that as I apply throttle the red lights will follow in a wave kinda with the left one getting brighter then the next one and so on, and the servo keeps twitching no matter what and the fxr seems to be getting really warm almost to being hot

[Charlie-III]

Originally Posted by demonoid369

First pic us the bec unplugged and the extension wire(with red wire removed) off so its just the esc, battery, and servo and motor. Even with that, it twitches.
The bec is connected to the battery posts on the fxr and goes into the auxiliary channel on the 2.4.

Ummm.....the red & black from the external BEC need to be connected, it's the red from the ESC that needs to be disconnected. Otherwise, the 2 BEC's are fighting each other.
This is why I prefer direct from the external BEC to the steering servo.
What voltage is the external BEC set to?

[demonoid369]

The black and red wire of the bec are connected to the battery posts on the fxr, red on positive and black on negative. And it's stock so it's 5.1v but that wouldn't make my servo and motor twitch? Because it does the same when I disconnect the bec and plug the fxr normally in(with the red wire reattached)

[Charlie-III]

Originally Posted by demonoid369

The black and red wire of the bec are connected to the battery posts on the fxr, red on positive and black on negative. And it's stock so it's 5.1v but that wouldn't make my servo and motor twitch? Because it does the same when I disconnect the bec and plug the fxr normally in(with the red wire reattached)

On the red, what I meant was the OUTPUT side of the BEC needs the black & red connected to either the RX or direct to the servo.

Is this the first time you used this radio?
Is the TX bound to the RX?
Is the ESC calibrated to the RX/TX?

Sorry I'm not an expert....just thinking things through to help out.

[SACCO]

Is everything plugged in the right way to the rec? In the pic it is reversed from what most others use

[demonoid369]

This is first time with any fancy electronics lol, I was using a tq3 and a rooster crawler but sold them and got me a used fxr and a fleshy 2.4 controller

[demonoid369]

Originally Posted by SACCO

Is everything plugged in the right way to the rec? In the pic it is reversed from what most others use

Which pic? Edit: I was told that the black wire goes to the outside, always so I'm assuming the darker of the wires for the servo would also go to the outside


And the output side of the bec is connected to the rx, and from what the instructions say, my tx and rx are matched/binded.

I'm so freaking lost, I wish my lhs was open right now to help

[Charlie-III]

For our RX's (mostly Futaba, plus a Tower Hobbies) yes, the black/brown wires go towards the outside edge of the RX, the white/yellow wires face towards the center of the RX.

What happens if you disconnect the steering servo, just leave everything else plugged in??

[SACCO]

My frysky(that's what I call em) is opposite yours

[Charlie-III]

OP......so....what is the status.......??!!

[demonoid369]

Still not working, when you try to give it throttle, either forward or reverse, the motor will twitch just like the servo. You can get it to go full throttle, it's just when your applying it slowly it'll twitch.

[ozyint]

Originally Posted by demonoid369

This is what the fxr is showing with the battery connected

I noticed that as I apply throttle the red lights will follow in a wave kinda with the left one getting brighter then the next one and so on, and the servo keeps twitching no matter what and the fxr seems to be getting really warm almost to being hot

Is this pic with the bec? If so it's hooked to the receiver wrong. You need to remove the red wire from the esc going into the receiver and leave all the bec wires hooked up. I saw you had an extension made with that going on just wasnt sure where you were putting it, and it was kind of confusingly worded.
But if you disconnect the red output from the esc to the receiver and then just run the bec with all the wires you should be good. if not check your cap on the esc.

[demonoid369]

How do you check the cap? No one at the get together could figure it out either, they said it could be the bec because it's only set at 5.1v so it could cause the motor and servo to twitch. Is that true??

[Charlie-III]

Originally Posted by demonoid369

How do you check the cap?

Think of a cap as a battery.
Disconnect one leg of the cap, put a digital voltmeter on it (one DVM lead on one cap leg, the other DVM lead on the other cap leg) with the DVM set to "resistence" or "ohms".......watch the display. Now swap the DVM leads around and try it again & watch the display.

You may see the numbers drop to "0", swap leads and you will see it charge up.

What you are doing is to discharge the cap, then recharge it, swapping the DVM leads changes the polarity of the DC voltage going in.
A bad cap usually won't accept a charge, thus the display won't change.

[demonoid369]

I don't have a voltmeter, would all the twitching be because of the capacitor? What about the lights on the fxr? What does that mean

[fastfred28]

Originally Posted by demonoid369

I don't have a voltmeter, would all the twitching be because of the capacitor? What about the lights on the fxr? What does that mean

I doubt if its the cap i broke a leg off mine and didnt have one to replace it,i ran it without one and it never did this