36 replies to this topic

[Felix Da Cat]

I know in the wiki "Option 2" is recommended but i always used option 1 and 3
never had problems with any of those options...
so it all depends on the ESC you are using?? or is there "one" proper way how people should plug their esc into the CC?

made this drawing... so you know what i´m talking about


 ESC-PLUG.png   100.8K   286 downloads


update (2) :

 ESC-PLUG.png   308.42K   277 downloads

[K Wells]

I use Option 2 in your drawing

[Adverse Effects]

i would never use 1

2

3 would work but may not at times and with some ESC's

Edited by Adverse Effects, 14 April 2012 - 09:55 AM.

[David J]

I've heard some people recommend option 3 - I'm just trying that out on my latest quad.

It certainly works, but it hasn't really been flown much yet.

[juz]

I dont think there is any right or wrong. Just what works for individual setups.

I tried option 3 with my first CC build. Now, I always go for option 1. I have done so with 100's of flights, NP.

Has anyone got any stories of failures or issues caused by their ESC wiring?

[Adverse Effects]

with the configuration in my main quad (look at my blog) all 4 ESC got extremely hot (i am guessing fighting each other) with option 1

i remember a thread somewhere with ESC's playing up after being flashed and useing option 3

[David J]

i remember a thread somewhere with ESC's playing up after being flashed and useing option 3

Was option 3 the cause or the cure?

[Adverse Effects]

cause

he switched to option 2 and it cleared up

Edited by Adverse Effects, 14 April 2012 - 10:59 AM.

[Drifter]

I started with the HK KK board then tried Aeroquad, Multiwii, FY-30A and now CC and have found that they all work OK for me using option 1.

[AlPackin]

I have only used option #1 and haven't had a problem though I agree that #2 is probably theoretically correct.

[rcadey]

option 1 could cause the ESC bec voltages to "fight" if they are significantly different - you are effectively paralleling up the voltage regulators on the ESC
option 2 could cause unwanted ground loops - all of the ESC's should have the same ground as they are powered from a common battery - but if you twist up the signal and ground you could help to mitigate any interference into the signal wire
option 3 is what I use - one source of reference voltage and ground, no ground loops...

...but your milage may vary for different ESC brands...

[Drifter]

Rcadey, do you have personal experience using option 1. I would like to hear of some actual experiences of people having trouble with option 1 in case I am headed for trouble. I have tried options 2 and 3 and have found that the one ESC that is doing all the work gets warm but not hot, while using option 1 all ESC's run cool. Also I am thinking that if one ESC failed, then the others would take over.

[Adverse Effects]

it all comes down to the ESC's your running

some dont mind all 4 connected some do

as i pointed out with my QUAD-01 with all 4 connected they ALL got hot enough to start to make the shrink wrap get soft

Edited by Adverse Effects, 14 April 2012 - 12:37 PM.

[Enthlapy]

Has anyone got any stories of failures or issues caused by their ESC wiring?

http://forums.openpi...dpost__p__66023

[Adverse Effects]

that is the one i was talking about

[David J]

it all comes down to the ESC's your running

some dont mind all 4 connected some do

Anyone got any experience of the way Turnigy Plush 18A ESCs behave?

The first time I put them on my new quad I just plugged them all in as they were (option 1) - which worked OK while I was hovering around the back garden (not much stress!). Then I got nervous and changed it to option 3...

I might just put back to option 2, which is the way my first quad works (but with different ESCs).

Decisions, decisions...

[rcadey]

@Drifter - sorry, no, no personal experience of either option 1 or 2

I was just recounting what I have read over various other threads

I run my two quads on option 3 and have not had problems to date

thanks

rob

[Petronio]

Hey David, on my Tri I used to have option 3 (just signal) with no prob on my Plush 18A. I have recently changed to flashed ESC so using # 2 now...

[David J]

Thanks, Petronio!

[Mat Wellington]

Have used all three

Its a myth that the bec in the esc's will fight with each other, especially if all esc's are from the same manufacture.

Internally on the esc, the bec circuit is quite often 2-3 chips paralleled up.
The bec with the highest output voltage will take the majority of the load, the resistance in the leads helps balence it all out.

If I am on 3s, and not driving servos, option 2 works fine. If on 3s and driving servos, use option 1, if on 4 s use option 1

If using a seperate bec, then you can remove all of the red wires.

Option 1 is what we use in industry, called "redundancy" so if one power supply fails, the other ones take up the slack