BMP085 altitude sensor

[BlueAngel]

Hi,

I want to add to my Wii Quadro Copter the BMP085(http://www.sparkfun.com/products/9694) sensor with a LLC (http://www.sparkfun.com/products/8745).
I have already the original WiiM+ and a BMA020.
So connecting these things together should work "normally" without problems, but i read this here:
http://www.rcgroups.com/forums/showpost ... ount=11455

Are there already working combinations with the following combination:
WiM+ powered by 5,0V from D12
BMA020 powered by 5,0V from D12
BMP085+LLC powered by 5,0V from D12

How good is "altitude hold" working now?
because in the change.txt:
BARO is still not working very well with huge amplitude (note it's a code issue, not a baro component issue)

thx
Stefan

[Alexinparis]

How good is "altitude hold" working now?
because in the change.txt:
BARO is still not working very well with huge amplitude (note it's a code issue, not a baro component issue)

It's still not perfect, but it's better since 1.prebis7.

[fr3d]

hye
I've just tried this sensor this afternoon, I've used multiwii1.7pre modified by jlnaudin and modified once's more by me to be used with a normal 5 x ppm signal.
the used hardware is : fr3d-shield (my own shield with integrated sda & scl llc and a 3.3v low drop regulator) you can find informations @ http://fr3d.kazeo.com only in french for this time...

with this solution every i2c device send & receive signal @ 3.3v and arduino send & receive signal @ 5v bmp085 is not a "5v friend".

bmp085 is working well but quadricopter rise and down on +/-2 meters

[BlueAngel]

@Alex:
thanks i will order one and try.

@fr3d:
i have read that too, anywhere in the big rcgroups thread, that everything works with 3,3V.
Thats the solution i have to use, if the 5V way will not function.
I have the Jussi shield and so there is too a 3,3V low drop voltage regulator.

+-2 meters are okay for the beginning.
It should be just another safety feature for my FPV quad.

[dodecopter]

i use this bmp085 breakout with 5V from D12 http://www.lipoly.de/index.php?main_pag ... _id=161167

( "bad" 1.6B ) itg3205 clone used as itg3200 + ELV bma020 breakout, powered via D12 too .

until now i didnt need 3,3v

[BlueAngel]

thx, thats also a possibility.
I have already seen this sensor at lipoly.de, but the normal sensor + LLC is cheaper and should work too.
anyway, thanks.
I will look, what i will take.

[UndCon]

I have a bmp085 ready to be connected to my "Jussi-boards"

After yesterdays crash I'm going to redesign a few things - nothing major, only minor adjustments