"dead cat" configuration?

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stoopkid
Posts: 6
Joined: Sat Mar 01, 2014 10:38 pm

"dead cat" configuration?

Post by stoopkid »

I currently have my HK MultiWii 328 running pretty well on a 660mm x config frame. I want to change my frame for video but it's hard to find a totally square H frame. If I get a "dead cat" style frame, can I still use QUADX config? Will it fly terribly differently? In particular rolling side to side, am I going to get wonky results?

DeadCat
Posts: 2
Joined: Wed Mar 19, 2014 2:33 pm

Re: "dead cat" configuration?

Post by DeadCat »

hey dude,
you need to tweak the code like that, then it works fine:
#ifdef QUADX
motor[0] = PIDMIX(-1,+1.08,-1); //REAR_R
motor[1] = PIDMIX(-1.31,-0.56,+1.31); //FRONT_R
motor[2] = PIDMIX(+1,+1.08,+1); //REAR_L
motor[3] = PIDMIX(+1.31,-0.56,-1.31); //FRONT_L

waltr
Posts: 733
Joined: Wed Jan 22, 2014 3:21 pm
Location: Near Philadelphia, Pennsyvania, USA

Re: "dead cat" configuration?

Post by waltr »

Deadcat,
Which file is this in?
I searched the multiwi files but didn't find these code lines.

Ahh...found it in output.cpp.

Here is a good explanation of how the PIDMIX is used:
http://polakiumengineering.org/?p=1612

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