Flickering LED at full throttle? - RC Groups
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Apr 13, 2005, 08:14 PM
Registered User

Flickering LED at full throttle?

Just set up a new G480 Groove tonight with a CC25 / Axi2808 /24 with APC 11x5.5E prop/ 3S TP2100 pack- while everything seems to work OK, I noticed the LED "flickers" at the full throttle position.

All default settings on the controller, other than 9.0V cutout, and brake disabled set via PHX link - I believe the prog. ver is the 1.021 , not the auto lipo detect ver.
Motor starts fine, seems smooth- no stuttering etc..

Did a search of this forum for "flickering LED" ( nope..) and Blinking LED ( a few..) but nothing really concrete, and I really wouldn't call this "blinking", but more of a rapid flickering- but definately not the steady "on" condition like I see with my other CC25's & CC10.

As I was only setting up the new bird, I haven't charged the TP 2100 pack as of yet, just hooked her up to set throws & check motor rotation.

Could this perhaps be the problem? As I'm going out of town for a week ( or more) I don't really want to charge the pack to full pop and leave it without flying....Any idea's ?

Otisco Joe
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Apr 13, 2005, 10:21 PM
ElectriGlo Pilot
Trogdor's Avatar
I just found this on my cc35 as well, I think its a sign that you're hitting LVC. I ran a whattmeter ona new lehner motor setup I have and one of my Tp2100 3S was dropping to just about 9.0V at full throttle (only 225 watts! ) It was then I noticed the power kinda fluctuating and the led flashing.
Apr 15, 2005, 10:28 AM
Registered User
Patrick del Castillo's Avatar
Trogdor- You are right on. A flickering LED means that it is just going into the soft cutoff routine. Your batteries can't quite handle the load of the motor and prop, and are dropping to around 9.0V, dipping below from time to time. The throttle is dropped, the voltage comes back up, and it goes back to full throttle.

Apr 15, 2005, 01:56 PM
ElectriGlo Pilot
Trogdor's Avatar
Woohoo, I got it! That's actually a nice feature, I just wish I knew about it before it startled me while running it up in my "lab"! Maybe its in the docs but you don't really know what to expect until you actually see it I think.

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