[f5soh]

You should locate the capacitor between pin4 from regulator and ground.

[Tomcatt]

Here's what I'm working with.  Maybe I can get in there and just the 4 pin on the regulator but I'd like to make sure that one on top is the one to cut.

[f5soh]

Yes, you should do the job on regulator found on top.
The one that power Accelerometer and Pressure sensor.
On back there is the regulator dedicated to power RFM22 module.

https://github.com/librepilot/LibrePilot/raw/next/hardware/Production/OpenPilot%20Revolution/Revolution%20Schematic.pdf

[Brunosanta]

guys you are genius.. I have just removed the c9 capacitor instead of 6 to 10 meters variation ( after calibration), I am getting like half to 1 meter.
If I want to include another correct capacitor what color would it be? anybody has a photo of the one? Considering that by putting the capacitor I will get a even better resolution!

thank you

[f5soh]

If your regulator has a LG33 marking you can replace with a 470pF capacitor.
If you don't know have this capacitor value you can simply stay with capacitor removed like the datasheet says.

https://forum.librepilot.org/index.php?topic=311.msg3861#msg3861

[Brunosanta]

I cant really find the color of the 470nf smd capacitor to go and hunt on my old eletronics. would you know the color of it? thank you F5soh

[Brian]

That should be 470pF, not 470nF, and SMD capacitors are all pretty much a beige color.  You can't tell the value of them by looking at them.

[Brunosanta]

Hello Brian, I have mistyped it.. I mean 470 pico fahrad.. thank you, so no chance for me to get a SMD one.
In between I have found a normal size one, in my electronics which is 473Pf, do you reckon I could use this one successfully, or it has to be the exact 470Pf in order to work with the LG voltage regulator?
Cheers.

[hwh]

The difference between 470pF and 473pF wouldn't make any difference.

[f5soh]

473pF is a weird value for a capacitor... is a measured value ?

If you have a SMD component with "473" on it, that more likelly a 47K resistor.

This capacitor is optional, better stay without compared to a bad component or value.

[Mateusz]

473pF is a weird value for a capacitor... is a measured value ?

If you have a SMD component with "473" on it, that more likelly a 47K resistor.

This capacitor is optional, better stay without compared to a bad component or value.

Technically it's a possible value, but since pico is smaller than nano and probably it's within error range of batch reproducibility and with what you can measure with your capacitance meter, I doubt it could be incorrect. But 1m from lowest peak to highest peak (+-0.5m from average) is max what this type of sensor can give you.

This sensor has 12cm accuracy but precision is another thing (see attached picture) and that's to my knowledge best what you can get with digital barometers on the market. There is new one recently announced with 10cm accuracy but also as similar precision.

[Mateusz]

Regarding correct capacitor

That should be 470pF, not 470nF, and SMD capacitors are all pretty much a beige color.  You can't tell the value of them by looking at them.

[anthropo]

hello,
sorry but i have a doubt . I have this board, could someone  show me the capacitor to remove ?

[QC102]

I have two Revo boards from BangGood - I am clueless as to  their quality - still waiting for a gizmo to connect  my NEO M8N to the uBlox website - so they are not in use.
How do my boards stand as far as the Baro quality? 

Pix attached

[TheOtherCliff]

That looks like a good one.  If you switch the scope to altitude (instead of pressure) you will see about +-0.5m of altitude noise.  That is more understandable to me.  And that +-0.5m will be smoothed out by the firmware.