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Rares Gosav:
17 Jan 2020 17:44:22
Hi guys and happy new year!!!
01 Jan 2020 00:12:50
Happy new year everyone, happy flying.  :beer2: :beer2:
31 Dec 2019 17:06:13
Happy new year all hope 2020 is a cracking year for you  :beer2:
25 Dec 2019 00:00:49
Happy Christmas to everyone.
24 Dec 2019 13:50:56
Seasons greetings to all on this forum have a good one ;)
21 Dec 2019 17:58:42
Have a great time DB. Look forward your projects in 2020.  :beer2:
21 Dec 2019 16:59:17
Have a good one D.B. ~~ :beer2: :beer2: :beer2:
21 Dec 2019 16:14:27
21 Dec 2019 16:13:44
Tbh I've been really busy, not had much time to fly anything and with conditions being crap, hopefully in the new year I'll have some new projects on the go, mostly to do with HAM radio, will certainly fly again soon. FTR I hate FB too   :D Merry Christmas
21 Dec 2019 15:21:30
Merry Christmas  :beer2:
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3d - Printworx

Printing 3d Forum

accel Z , reading 1000

Started by peter_a, Saturday,May 04, 2013, 11:48:46

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Hi , trying to get my hexicopter a little more stable , recalibrated the compass and set the level etc , tweaked the gains a little.
( only the stabilize P gain to 4 , Angular rate control to 0.1100 )
Its better, but I`m fighting with the sticks a little to get it to hover in the same place, The first bit of the hover is like it`s on a elastic band ( height wise ) , it will gain height then drop to the floor , then gain height ending up to almost the same level . ( only flying , a couple of feet off the ground in stabilize mode) .
Small garden , and it`s easier to just cut power what it gets out of control .
only by first multirotor , so don`t know how controllable they are to hover , But I guess it`s a more controllable now than my little helicopter.

Looking at the raw data , all the sensors show a value of around 0 to 5 , but the accel z is 1000 , is this correct ? , I`ve tried a erase all value and start end , but still the same value


I believe that is correct. The -1000 is the force of gravity on the Z axis. I think if you turn the copter upside down it will read +1000.

At least this is how I interpreted a thread on the DIY forum.



Saturday,May 04, 2013, 18:28:05 #2 Last Edit: Saturday,May 04, 2013, 19:11:57 by peter_a
Yep , you are right with the negative to positive by flipping it.

Checking anything to find my problem , and doing a rebuild where needed !!!!

Tried removing the props and checking the gyros and accels , and it looks like the vibration from the motors are getting passed directly to the board , by spinning the motors and feeling the vibration on the board .
Using one layer of double sided foam tape ( about 3mm trick ) to hold down the board .

Did a raw data , of it at idle and with the motors spinning ( no props )
I think mutlilayers and some other method is needed .


You can`t run it without props, because it looks like it generates pulse like vibration which you don`t get with the props on.
And it`s a catch 22 , the more foam on the bottom of the board will make it push the esc / radio wires up onto the top plate .