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xoltri replied to xoltri's discussion Pixhawk causing motor sync issues.
"Simon Kirby responded to my youtube video with the following:

Hi, all! It turns out that the pixhawk (http://3drobotics.com/wp-content/uploads/2014/02/px4fmuv2.4.3_schem...) uses TXS0108 buffers on the motor PWM outputs. This is a bidirectional…"
Aug 27, 2015
xoltri replied to xoltri's discussion Pixhawk causing motor sync issues.
"Ah, well since it works on the 5V BEC, even through the Pixhawk, I don't think that's the problem.  

Now I'm no electrical engineer, my day job is as a computer admin.  But my best guess, at least in my specific situation, is that it is a ground…"
Dec 12, 2014
xoltri replied to xoltri's discussion Pixhawk causing motor sync issues.
"Artem, not sure what 3.3v would accomplish.  It already works fine if I 1. Disconnect the power module from the Pixhawk (or remove it entirely) or 2. Control the motor directly sans Pixhawk with the 5V BEC on the receiver. 

But sure, I can take the…"
Dec 12, 2014
xoltri replied to xoltri's discussion Pixhawk causing motor sync issues.
"I can send mine back to you if you wish.  As per my latest youtube video the problem still exists."
Dec 12, 2014
xoltri replied to xoltri's discussion Pixhawk causing motor sync issues.
"A long time ago, it doesn't fix the problem."
Dec 9, 2014
xoltri replied to xoltri's discussion Pixhawk causing motor sync issues.
"Just the BEC on the Afro ESC."
Dec 8, 2014
xoltri replied to xoltri's discussion Pixhawk causing motor sync issues.
"No, I didn't, but it happens both with my 2200kv motor on a 3S 2200mah lipo, as well as on my 1100kv motor on a 4S 3700mah lipo, so I doubt it is related to the battery."
Dec 8, 2014
xoltri replied to xoltri's discussion Pixhawk causing motor sync issues.
"Here you go.Power Module.BINNo Power Module.BIN"
Dec 7, 2014
xoltri replied to xoltri's discussion Pixhawk causing motor sync issues.
"The setup that was sent to Craig was mine, I don't know how you would describe the wiring on it a 'dogs breakfast'.  It is just one motor, one speed controller, and the power module.  When I sent my setup to Craig, he was exceedingly nice and…"
Dec 7, 2014
xoltri replied to xoltri's discussion Pixhawk causing motor sync issues.
"Sorry, I've been through all of this and still I have to back up FlyHigh, there is something odd with the Pixhawk (even despite what 3DR is saying).  

If you watch this video, you can see that even with the ground wire connected it still has the…"
Dec 5, 2014
xoltri replied to xoltri's discussion Pixhawk causing motor sync issues.
"I sent in the combo to Craig @3DR from this video: https://www.youtube.com/watch?v=u_KZ5K0R7eY&list=UUYZ_ZGYHxt_CX... He still has it.
 
He was not able to replicate my issue though, which was odd since I think the issue was pretty clear in the…"
Sep 12, 2014
xoltri replied to xoltri's discussion More problems.
"Thanks for the reply.  The receiver is set to go to the values it has when it first boots, so neutral sticks and throttle at 989.  I guess it is possible the receiver glitched for some reason and sent the 0 values, but shouldn't it have then…"
Jun 6, 2014
xoltri replied to xoltri's discussion More problems.
"I'm bumping this because I've yet to receive a response.  I've already purchased a new transmitter and FrSky receivers in the off chance it was my Assan hardware that was causing this.  I have done some bench testing but have not been able to…"
Jun 6, 2014
xoltri replied to xoltri's discussion More problems.
"More digging, zeroed in on the problem (literally) in the logs but I still can't explain why this would happen.  Any advice is appreciated.  Also confused why it didn't trigger a throttle failsafe and RTL.  I have the two examples of this on this…"
Jun 3, 2014
xoltri replied to xoltri's discussion More problems.
"Yeah you can definitely see the same issue on yaw vs desyaw.  So why does it appear it received simultaneous drastic yaw, pitch and roll commands?"
Jun 2, 2014
xoltri replied to xoltri's discussion More problems.
"Ok I did some more digging and can ask a more specific question.  The two glitches appear at just before 21,000 and just after 23,000 in the logs.  It looks like it received a roll and pitch (and possibly yaw) command, which is really odd, because I…"
Jun 2, 2014
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