"Why is it saying 2Mpixel on the lens?"

"Just to add to the previous discussion, both autopilots are fine. In fact, all autopilots are fine, all of them are quite similar. All autopilots have control, guidance, and navigation blocks. All of them are implemented quite similarly - linear PID…"

"No, of course they don't use any ArduCopter code. I remember BYU university showing one of the first versions of Kestrel autopilot in 2003 or 2004 on IMAV hosted by us in the University of Arizona and even at that time they were going very strong.…"

"Is there any protection present in modern gps chips? I would imagine this could be based on data rate, or difference in signal power, etc.
Also, in my opinion, this is a fear mongering post. This is certainly feasible, but not easy to do. A…"

"On the technical side. The distance suggested in item 2(1,2,3) is huge. That kind of radius of operation is not hobby-size any more."

"@BoBo Flight 
My experience with speed/reliability is mostly experimental. But I can confirm that lower speed will translate into a greater reliability. Probably this has to do with duration of each bit in the square pulse train of the serial…"

"Jani, thanks for the extended reply!
@BoBo Flight - in my experience it would make sense to stay at 900 band for outdoors as it has less penetration but more pass-around - less packets are lost. As for connection speed it would make sense to switch…"

"Great job! Now, how reliable is this in terms of latency, bandwidth, number of droppped packets and number of control messages per second?"

"Geoffrey, this is a great idea. If it works it may be possible to selectively stabilize against certain color, like sky, ground, or even, say, laser marker points. However, I am not sure about the cost of such filters and if they are actually…"

"Geoffrey, I could add that the infrared thermopile attitude sensor uses the same principle and it works pretty reliably and being used in may DIY MAV projects since ~2003.  I am sure that your sensor will work very well for many projects."

"JC, great job, as always. A lot of hardware/electronics/sersors issues are related to the noise, and proper shielding/filtering techniques are still described as magic. Research in this field is very valuable."

"@Randy I was assuming that uart present on most mcu and some even include sereval of them. In addition bit-banging version is also easily implemented and it even exist for arduino, not to mention that Adruino has a hardware uart as well. Umm in my…"

"I am curious if this will be a flying quad. My reasoning : motors are bigger, so the spin-up time is longer and reaction time will be slower. But on the other hand, the frame is bigger, so the inertia is larger (remember I~distance^2), so this quad…"