"Cool.  Thank you. Wade"

"The case has foam to cover the baro. To calibrate go to the CLI (terminal in mission planner) and type 'test' 'airpressure' and it will calibrate."

"Ill have to look inside.  My case was already assembled with the board in it.   Does anyone know if the barometer needs to be calibrated or if it can be? Wade"

"My case came with a piece of foam that covered the barometer."

"Hello.   Thank you for the reply.   I have a new APM 2.5 with a case.   Are you saying that with a case there should not be an issue?   I don't need the cotton anymore with the case?   The…"

"Anything that allows your barometer to breath and block sunlight. I used to use a piece of cotton, but when APM case came out I started using it."

"Im having the same issue.   Im using the 2.5 APM in a Multirotor and the altitude is way off.  what is the best way to cover the the barometer to make it more accurate? "

"2.5 mm silicone washers (8 for $1) - perhaps for the motors?  And/or the flight controller and/or camera... http://www.quietpcusa.com/Acousti-Anti-Vibration-Silicone-Washers-8-Pk-Translucent-P802.aspx  "

"I just installed v 2.9.1 Beta and got carried away with tuning.  Now I want to back to default PID's.  Can someone do a screen capture or snip of the default config screen in Mission Planner for the new Beta version Quad X? …"

"I now have eight flights on my Quad with the GPS re-mounted high above the APM/props.  I also put the GPS on the opposite side of 900 MHz telemetry.  The GPS is mounted on top of a 3/8” diameter carbon fiber tube.  The GPS now…"

"I think in addition to removing the TM1000, raising the GPS well above the spinning carbon props is the answer to a solid lock.  Now I can lift the machine immediately when the GPS shows a lock and put it into a stationary Loiter without it…"

"My GPS problems are solved.  The Spektrum TM1000 telemetry was interfering so it has been removed.  I also had it mounted in too close proximity to the GPS.  The GPS is now mounted on top of a 3/8” diameter carbon fiber rod and…"

"For now I only have the two remote LED's.  It only makes sense that the ARMED LED stay lit when it is ARMED and go dark when NOT ARMED.  Blinking at altitude doesn't make sense at all."

"I don't think its low voltage.  I'm running two 2200 3S LiPo's in parallel and when I recharge they each fill with ~ 950 mA for a six minute flight."

"I have both the GPS status and the ARM with remote LED’s on A6 and A7.  The ARM LED goes solid on at arming but begins to blink about four minutes into the flight.  Happens every flight.  I have LED_MODE set to 107.  Any…"

"I'm wondering if the props (especially carbon fiber) can cause multi-paths for the GPS signals and thus bad mathematics to happen?"