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Mavic Pro Motor Mod

chazz said:
FLY030.DAT

FLY031.DAT

FLY032.DAT

FLY033.DAT

FLY3031.DAT
Click to expand...
I didn't realize that you were talking about the .DATs that I had looked at earlier.:) The glitch isn't associated with the concatenation of the two .DATs. Using the highest sampling rate it looks like
upload_2018-6-5_5-39-20.png
Seems that the FC thought it was necessary to correct a (small) pitch down, roll left situation. It's not clear, at least to me, why a combination of 100% PWM on the low corner and 10% PWM on the high corner was needed. These messages occurred throughout the eventLog stream
1489.107 : 93594 [L-FMU/LED]action changed. aircraft install warning!:yaw install err(1)
1494.207 : 93849 [L-FMU/LED]action changed. aircraft install warning!:mass center install err(2)
1519.707 : 95124 [L-FMU/LED]action changed. aircraft install warning!:yaw install err(1)
1526.507 : 95464 [L-FMU/LED]action changed. aircraft install warning!:mass center install err(2)
1550.307 : 96654 [L-FMU/LED]action changed. aircraft install warning!:yaw install err(1)
1552.007 : 96739 [L-FMU/LED]action changed. aircraft install warning!:mass center install err(2)
1572.407 : 97759 [L-FMU/LED]action changed. aircraft install warning!:yaw install err(1)
1577.507 : 98014 [L-FMU/LED]action changed. aircraft install warning!:mass center install err(2)
1589.407 : 98609 [L-FMU/LED]action changed. aircraft install warning!:yaw install err(1)
1591.107 : 98694 [L-FMU/LED]action changed. aircraft install warning!:mass center install err(2)
1601.307 : 99204 [L-FMU/LED]action changed. aircraft install warning!:yaw install err(1)

Maybe the Mavic is unbalanced causing the FC to occasionally take seemingly inappropriate actions?
 
Last edited:
beanbubba said:
Lolo/chazz/Budwalker,

Could one of you look at this log file? It looks sort of corrupted, but I am not sure.

Log files here: drone-share-temp

Thanks
Click to expand...
FLY046 is not corrupted, but there isn't a flight. It's just 7 minutes of batteryOn. It occurred 2018-06-04 1:58:00 GMT
 
BudWalker said:
FLY046 is not corrupted, but there isn't a flight. It's just 7 minutes of batteryOn. It occurred 2018-06-04 1:58:00 GMT
Click to expand...

I must have broken this bird somehow, because there was for sure a 7 minute flight (and crash).
 
BudWalker said:
I didn't realize that you were talking about the .DATs that I had looked at earlier.:) The glitch isn't associated with the concatenation of the two .DATs. Using the highest sampling rate it looks like
View attachment 39463
Seems that the FC thought it was necessary to correct a (small) pitch down, roll left situation. It's not clear, at least to me, why a combination of 100% PWM on the low corner and 10% PWM on the high corner was needed. These messages occurred throughout the eventLog stream
1489.107 : 93594 [L-FMU/LED]action changed. aircraft install warning!:yaw install err(1)
1494.207 : 93849 [L-FMU/LED]action changed. aircraft install warning!:mass center install err(2)
1519.707 : 95124 [L-FMU/LED]action changed. aircraft install warning!:yaw install err(1)
1526.507 : 95464 [L-FMU/LED]action changed. aircraft install warning!:mass center install err(2)
1550.307 : 96654 [L-FMU/LED]action changed. aircraft install warning!:yaw install err(1)
1552.007 : 96739 [L-FMU/LED]action changed. aircraft install warning!:mass center install err(2)
1572.407 : 97759 [L-FMU/LED]action changed. aircraft install warning!:yaw install err(1)
1577.507 : 98014 [L-FMU/LED]action changed. aircraft install warning!:mass center install err(2)
1589.407 : 98609 [L-FMU/LED]action changed. aircraft install warning!:yaw install err(1)
1591.107 : 98694 [L-FMU/LED]action changed. aircraft install warning!:mass center install err(2)
1601.307 : 99204 [L-FMU/LED]action changed. aircraft install warning!:yaw install err(1)

Maybe the Mavic is unbalanced causing the FC to occasionally take seemingly inappropriate actions?
Click to expand...

Or maybe the mavic "thinks" its unbalanced when it's really not. What possible things could artificially inject this?
 
beanbubba said:
I must have broken this bird somehow, because there was for sure a 7 minute flight (and crash).
Click to expand...
Are you sure? Battery data looks normal. IMU data looks like it was turned on and never moved. It never connected to the RC.
 
20 sec hover and got a hard landing. I actually saw the left rear motor stop. There are some weird things in this pic. Left rear motor 100pwm with 0 speed. right front 0 current,10pwm and 6073 rpm. Are these just delays in signals ya think?

FLY545.DAT


Capture18.PNG

I was going to say hover to crash but after i saw pieces flying in beanbubba's crash i changed it to hard landing.
 
if i plug my battery into my control board and i see that it isn't showing battery percentage greater then 0 (even though its not accurate) in the app i know it isn't right and i try again until it shows battery percentage and then i know it will make a log and just work. Sometimes it takes 2 or three times plugging and unplugging the battery from it. It always works (every time) if i plug the battery into it first making sure its on and plug it into the Mavic while its on. This could be very damaging if you get it wrong and i already made sparks this way..
 
chazz said:
you didn't buy lihv which is what i didn't want to tell you yet. you got the 14,8V instead of 15.2V. You can charge that battery to 16.8V. 4.2V per cell. Charge it using the normal lipo setting on your charger. Don't run it down past 3V per cell i hear that will destroy the battery. Fly around with it and see how long of light time you get with it but don't stray too far away from home. Its up to you to make sure you land before 3V it wont autoland. (or at least mine didnt) Percentage readout is worthless only go by single cell voltage. It will display the lowest cell on the front page of djigo.
Click to expand...

Since you publicly shamed me, I did however have a pair of 5200LiHv and made a 4s from them. I have never tried this before because I was worried I would burn my shop down :)

I think I did it right because there are no sparks...

upload_2018-6-5_20-37-4.png

upload_2018-6-5_20-40-24.png
 
beanbubba said:
YES!!!

Multistar has dropped weight big time. I haven't ordered from them in several months. They used to be ~350g each.
Click to expand...
Or it's a 10.4Ah 15.2v pack? If so that's a fantastic 264Wh/kg for the bare pack.
 

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