User Info

 
 
Welcome, Guest. Please login or register.
Have you missed your activation email?

Multi Rotor UK Shoutbox

Refresh History
  • Bajadre: Lol Mr. Fusion Home Energy Reactor
    September 28, 2016, 19:22:09
  • PropsToYou: I thought he was rocking a miniature arc reactor?
    September 28, 2016, 14:40:40
  • Saleem: He ain't using batteries,them Warpner cells ;)
    September 28, 2016, 14:13:22
  • hoverfly: @Gav that's a hell of a flight ,what batteries you using. :blink
    September 28, 2016, 13:52:03
  • Gav: Hello from Bangalore
    September 28, 2016, 13:26:24
  • PropsToYou: Drove past an FPV group in the middle of nowhere in Malaysia flying fixed wings
    September 28, 2016, 13:20:24
  • PropsToYou: Nice! I really need to get my racer up and flying again
    September 28, 2016, 13:20:08
  • insx: I flew my Eachine Racer and took it home in one piece
    September 28, 2016, 13:14:11
  • insx: JAB1a came back after a long break and posted a load of his videos flying like a pro
    September 28, 2016, 13:13:42
  • insx: *the last
    September 28, 2016, 13:12:14
  • insx: Stupotsthelot appeared in the shoutbox with all sorts of problems with his Eachine Racer but has been conspicuous by his absence that last couple of days.
    September 28, 2016, 13:12:04
  • Slayer23: toilets?
    September 28, 2016, 12:56:02
  • insx: England?
    September 28, 2016, 12:26:29
  • PropsToYou: Back from three weeks flying in Malaysia, 9 days to prep myself then off for another 3 weeks in Nepal. What have I missed? :)
    September 28, 2016, 12:25:35
  • kilby: My 450 prop strikes used to be audible from over 150 meters away (the joys of CF props)
    September 28, 2016, 11:23:19
  • insx: LOS was a different story. That DING as you break a prop!
    September 28, 2016, 09:04:45
  • Bajadre: Did well there insx remember my first go at goalposts doing LOS lol never again
    September 28, 2016, 00:13:13
  • insx: Bed time
    September 27, 2016, 23:19:09
  • insx: Thanks. I thought it wasn't bad for my 2nd time out (1st was very brief). Hopefully I'll get the confidence to take the training wheels off soon (horizon mode).
    September 27, 2016, 23:17:57
  • Saleem: You fly OK I nsx,it's good example for that guy wanting to pack it in twenty or whatever name is
    September 27, 2016, 23:11:46
  • Saleem: I stand me,yet where I fly it's pretty good but I want one of them dvr units for my ev800,they are oretty good tried today although it was rainy,my quad I esc are playing up and cam pic is bad so grounding my quad till I get new esc,ordered just waiting.
    September 27, 2016, 23:11:04
  • insx: I do sway a bit.
    September 27, 2016, 23:08:58
  • insx: I think I was kneeling. I read that if you stand you might fall over.
    September 27, 2016, 23:08:17
  • Saleem: You fly kinda like me,expect you lazy,you sit down
    September 27, 2016, 23:07:49
  • Saleem: Sorry I hate this phone,dodgier than a Slovakian selling Galaxy phone in city centre :laugh:
    September 27, 2016, 23:06:34
  • insx: abs localism...
    September 27, 2016, 23:06:29
  • Saleem: Dodgier than abs localism selling galaxy phones in city centre!
    September 27, 2016, 23:05:33
  • insx: See my slightly pathetic attemps at flying and video editing here [link]
    September 27, 2016, 23:01:13
  • Bajadre: Done another emax motor 2nite :( think am gonna change these rjx props and they dont have no give and the motor takes the hit lol
    September 27, 2016, 21:53:08
  • Slayer23: gotta love chinglish
    September 27, 2016, 21:49:20
  • insx: Instant gratification eh?
    September 27, 2016, 21:35:38
  • Slayer23: insx check the last post in the wasp thging
    September 27, 2016, 20:14:09
  • Slayer23: oh dear i think i need to go lay down i am having an attack of the sence of humour and she dont like it
    September 27, 2016, 17:03:54
  • Slayer23: lmao could do with bandana and say hewo
    September 27, 2016, 16:47:52
  • insx: Maybe a rating for Chinglish in the instuctions, they are always fun
    September 27, 2016, 16:46:23
  • insx: Tackyness...
    September 27, 2016, 16:45:55
  • insx: I'm thinking about the rating system. Annoyance /10, Amusement/10, Endurance/10, etc.
    September 27, 2016, 16:44:03
  • Slayer23: insx that has brightened up my day i am looking at army surplus sites for a ghillie suit so i can play at being a drone operator for real lol
    September 27, 2016, 16:42:31
  • insx: Forum post probably best for that one
    September 27, 2016, 16:15:16
  • Two-Six: yer, me out ;-)
    September 27, 2016, 16:09:43
  • Slayer23: no lol too many convos going on here i was answering insx
    September 27, 2016, 16:08:48
  • Two-Six: what fly drones filming stuff for a living?
    September 27, 2016, 16:08:06
  • Slayer23: oh i would love to do that lol
    September 27, 2016, 16:03:24
  • Two-Six: I know there are a few ppl here who do, or they fly for a drone filming outfit
    September 27, 2016, 15:55:39
  • Two-Six: Anybody on who know anybody on here who has a drone filming  business?
    September 27, 2016, 15:55:06
  • insx: There's a youtube career opportunity here, Slayer
    September 27, 2016, 15:46:53
  • Slayer23: have suggested that they should use humourous reviews to sell their items lol
    September 27, 2016, 15:44:43
  • insx: My understanding was that you needed Flysky for Flysky, not FrSky. All that DHT, etc has just confused me though. Still lots to learn.
    September 27, 2016, 15:43:29
  • insx: Maybe the production model will have the omniscience module
    September 27, 2016, 15:41:55
  • Slayer23: DHT, DFT, DJT, XJT, X9D plus, and X9E protocol will my FS-i6s support it
    September 27, 2016, 15:31:54

Who's Online

Theme Selection



Forum Default

Permanently

* Who's In The Chat Rooms

User in Chat:


Author Topic: How do you cover / tune your barometer?  (Read 9193 times)

0 Members and 1 Guest are viewing this topic.

Offline teslahed

  • Global Moderator
  • Trade Count: (1)
  • Hero Member
  • *****
  • Thank You
  • -Given: 238
  • -Receive: 252
  • Posts: 3983
  • Liked: 1718
  • Country: gb
How do you cover / tune your barometer?
« on: August 09, 2012, 15:07:29 »
I'm not getting as good performance from my barometer as i would like. I have covered it from prop wash by sticking a little square of double sided sticky foam tape on the chip itself but now I'm wondering if that's the best way to do it.

What do other people use and do you tune your altitude hold PIDs much or do you find the defaults work fine?

It's the MS5611 high precision barometer in the GY86 10DoF sensor board i have.


One circlip short of a quadcopter.
 1 lobe short of an antenna.

Offline Gaza07

  • Administrator
  • Trade Count: (0)
  • Hero Member
  • *****
  • Thank You
  • -Given: 320
  • -Receive: 216
  • Posts: 4695
  • Liked: 719
  • Country: gb
    • Multi Rotor UK
Re: How do you cover / tune your barometer?
« Reply #1 on: August 09, 2012, 15:20:00 »
I normally squash a bit of open cell foam onto it, which is easy when you have a separate mcu and sensor board so it just get sandwiched between the 2, you not supposed to cover the holes with anything that can breathe, the altitude hold from the ms5611 should be a lot better than the bmp085 but the sonar is the most accurate but only at low altitude,
If this is multi wii I have in the past found the default values to be about as good as it gets but that was using a bmp085, I have never used a ms5611 with multi wii to date, If you are going to tweak things be carefull with the velocity setting as I altered it once and my copter shot of towards the moon very quickly, just make small adjustments each time and only alter one setting at a time, although default is probably going to end up the best setting  ::)

Offline Toledodave

  • Site Sponsor
  • Trade Count: (0)
  • Sr. Member
  • *****
  • Thank You
  • -Given: 15
  • -Receive: 12
  • Posts: 410
  • Liked: 96
  • Country: us
Re: How do you cover / tune your barometer?
« Reply #2 on: December 23, 2013, 21:53:48 »
I used the foam my motors came in seems perfect for this application.

Offline Biffa

  • Site Sponsor
  • Trade Count: (0)
  • Hero Member
  • *****
  • Thank You
  • -Given: 33
  • -Receive: 142
  • Posts: 2403
  • Liked: 1000
  • Country: gb
  • Fly more, worry less!
Re: How do you cover / tune your barometer?
« Reply #3 on: December 23, 2013, 22:23:11 »
I have a bunch of sanding blocks. Cut off the emery paper an underneath is an open cell foam. Certainly worked on my Crius build ~~
Steve

Offline nub

  • Trade Count: (1)
  • Hero Member
  • *****
  • Thank You
  • -Given: 106
  • -Receive: 196
  • Posts: 4058
  • Liked: 1151
  • Country: scotland
Re: How do you cover / tune your barometer?
« Reply #4 on: December 23, 2013, 22:44:45 »
i used a bit of dark spongy foam with some insulating tape, it done the job quite well.

canny mind what PID settings i ended up with but do remember having to mess about with them quite a bit to get to hold its height in FF, that was with a BMP085.
Point and click.

Shoot from the hip.

Offline Hands0n

  • Global Moderator
  • Trade Count: (0)
  • Hero Member
  • *****
  • Thank You
  • -Given: 256
  • -Receive: 609
  • Posts: 6725
  • Liked: 2820
  • Country: gb
  • Did the Wright brothers feel this amazing?
    • Technoratia
Re: How do you cover / tune your barometer?
« Reply #5 on: December 23, 2013, 23:04:03 »
Whatever you cover it with has to be able to breathe.  I use the foam packing that disk drives arrive in. It is dark grey, totally impervious to light and is open cell, that is it breathes. 

One of the neatest methods I saw was someone cut the top off a car tyre valve cap and glued it to the FC such that it encompassed the barometer chip, and then packed light-opaque open foam into the opening, making a completely light-tight and breathable enclosure for the Baro.

On my APM 2.5 I have a slab of that grey foam that runs along most of the length of the FC inside its 3DR case.
--
Danny
"Its better than bad, its good"

Current FCs: Pixhawk, APM 2.6, Naza M V2, Naze32, Flip32+ CC3D, KK2.1.5
Aircraft: miniMax Hex, DJI 550 (clone) TBS Disco, 450 Firefly, 250 Pro, ZMR250, Hubsan X4, Bixler 2

Offline GdLookinMingeR

  • Trade Count: (1)
  • Sr. Member
  • ****
  • Thank You
  • -Given: 6
  • -Receive: 43
  • Posts: 450
  • Liked: 112
  • Country: gb
    • Dont Tell the Wife
Re: How do you cover / tune your barometer?
« Reply #6 on: December 23, 2013, 23:39:58 »
I have some open cell black foam
if you would like some posted send me an addy
i will post you a 50x50 F.O.C.
Merry Chrimbo
DJI Flamewheel kit, Naza Lite upgraded, dji optos with blheli, 200mw aomway & luminier 600tvl cam.
Carbon Tricopter with KK2 mini because you have to own a Tri and Falcon Evo FPV with apm mini fatshark 600mw vtx & pz2040 cam.

Offline barneyg

  • Trade Count: (1)
  • Sr. Member
  • ****
  • Thank You
  • -Given: 16
  • -Receive: 69
  • Posts: 925
  • Liked: 284
  • Country: scotland
Re: How do you cover / tune your barometer?
« Reply #7 on: December 24, 2013, 07:36:03 »
After running some bench tests I've removed the foam from my ms5611 completely, I was just getting the PID's dialed in before the weather closed in here ... At least with multiwii the ms561q is affected by temp quite a lot and if you are also using a 3dr telemetry module or Bluetooth especially the serial IO causes ms5611 to warm significantly (on my crius it is quite close to the UART stuff) ... Over the course of about 15 minutes my quad can drop to -15m (while sitting on the bench) if I cover the chip ... And it settles on about -1m if I don't ... In actual flight the propwash has not been a problem, not sure about light effects - my fc is between the top and bottom plates of a 450 clone.