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Andy777:
14 Feb 2020 16:14:59
Hi there. Im new. Having problems with my tarot landing gear. Its plugged into ch7 on futaba receiver. When i flick switch on transmitter i can hear a faint click on both legs but no movement. My flight controller is a mini px4 with no aux out terminals.
sh0wtime:
09 Feb 2020 16:57:32
and another :smiley:
Gaza07:
09 Feb 2020 10:22:04
Time for a new shoutbox post   ;)
Rares Gosav:
17 Jan 2020 17:44:22
Hi guys and happy new year!!!
ched:
01 Jan 2020 00:12:50
Happy new year everyone, happy flying.  :beer2: :beer2:
Gaza07:
31 Dec 2019 17:06:13
Happy new year all hope 2020 is a cracking year for you  :beer2:
ched:
25 Dec 2019 00:00:49
Happy Christmas to everyone.
apollo7:
24 Dec 2019 13:50:56
Seasons greetings to all on this forum have a good one ;)
ched:
21 Dec 2019 17:58:42
Have a great time DB. Look forward your projects in 2020.  :beer2:
hoverfly:
21 Dec 2019 16:59:17
Have a good one D.B. ~~ :beer2: :beer2: :beer2:
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3d - Printworx

Printing 3d Forum

CC3D current requirements

Started by NorcoT, Tuesday,September 15, 2015, 07:54:43

Previous topic - Next topic

NorcoT

Hey all, so iv recently added some RGB LEDs to my CC3D running cleanflight. So far the bench tests are fine but i thought id come for some advice.

So the LED strip with 6 LEDs are connected to the same 5+ and GND rail as my CC3D is powered from, both of which are supplied by a 5v BEC capable of supplying 1A.

From literature it seems that each LED can draw a maximum of about 50mA, so for 6 LEDs the max current draw should be 300mA.

What im wondering is what the supply current requirements for powering the CC3D are? Im guessing they are going to be less than 700mA in which case im fine using the one BEC to supply power to both LEDs and the FC.

Anyone else checked this before?

NorcoT

Also my speksat is connected to thw CC3D serial and from what i can find that draws a further 30mA so that leaves 670mA for the FC.. Surely thats more than enough plus some?

Paul01

I wouldn';t recommend running LEDs from your CC3D as it could cause a brown out which would cause your quad to fall from the sky. Put the LEDs on a second bec, again I wouldn';t use the bec on one of your ESCs.
TBS Tango 2
FatShark Dominator V3 with RapidFire Module
Armattan Chameleon-BF3.5.7
TBS Source One, KL100 Micro, Mobula7 HD
DJI Mavic Pro
https://www.youtube.com/c/paul01

atomiclama

Wasdale X, Ow that hurt

NorcoT

Quote from: atomiclama on Tuesday,September 15, 2015, 08:46:42
Just measured mine at 50mA


Thanks atomiclama, very good to know!


Quote from: Paul01 on Tuesday,September 15, 2015, 08:21:29
I wouldn';t recommend running LEDs from your CC3D as it could cause a brown out which would cause your quad to fall from the sky. Put the LEDs on a second bec, again I wouldn';t use the bec on one of your ESCs.


The way it is set up currently is that I have an old ESC which im using as a BEC (so its not actually connected to or powering any motors). This is connected to the CC3D through spare motor pins on the FC (Motor 6). Currently my LEDs are connected to the Motor 5 pins on the FC.

From my understanding the 5+ and GND pins on the the FC Motor Pins are on common rails, so this should mean that the LEDs are drawing power from the BEC and not actually ';through the CC3D';?

Failing that I will connect the LED 5+ and GND directly to the BEC, but I plan to use the single BEC as I';m short on space, hence why I want to check the current draw is acceptable. My thoughts were that this would effectively be the same as it is setup now as the 5+ and GND on the CC3D motor pins are on common rail?

atomiclama

Quote from: NorcoT on Tuesday,September 15, 2015, 10:14:12
From my understanding the 5+ and GND pins on the the FC Motor Pins are on common rails, so this should mean that the LEDs are drawing power from the BEC and not actually ';through the CC3D';?


Correct  ~~
Wasdale X, Ow that hurt