"Somewhere there is a  psychiatric ward missing a patient"

"I always though the FMA would make a good redundancy easy to implement and resistant to vibration. Wonder if you could stabilize a quad with those."

"@Daruis
According to the article  researchers have now found a way to make GPS technology accurate down to an inch, thanks to a new set of algorithms"

"@Darius
Its not DGPS  technology, read the article."

"I have found this also interisting
http://www.techspot.com/news/63801-new-high-precision-gps-technique..."

"Yes, his on something.
@joe noci excellent post keep the treatises coming."

"It will be even worse if it DOA from 3DR with a shipping of $50 The price from dealextreme is R750 and R2050 from netram that is a big deference."

"This is good news since shipping to South Africa form 3DR is $50 I'm just wondering about quality. What can go wrong "

"I agree with Phil Wat are you comparing it against? How does the reference signal look like?"

"I agree with jo buying from 3dr if you live in south africa is very expensive. The only deference is the HK apm has only got 4mb ram instead of the 16mb the 3dr board has Where the rctimer apm is a exacted copy"

"Rana, Do you rather prefer the Gluonpilot on the UBD4 . You use to be such a big fan of the Matrixpilot.
@Nick I realy like your design but don't you think its time for a more powerful processor like the ARM Cortex-M4F 32bit everyone seems to be…"

"Developers will have to change a lot of the code if it is ported to RTOS but the benefit would be worthwhile. Just imagine if PX4, Autoquad, Openpilot, and VRBrain wich are using the same processor, can standardize on a RTOS, how easy would I be for…"

"I wounder if the APM developers are still  using the Arduino environment.I still think RTOS is a good way to go."

"Chris, Nice looking board. I agree with Jani i would take the gps externally make the board a bit smaller and add usb for easy programing."