I have a new in box, never used Swift Navigation Piksi RTK GPS system.Sells for 995 online, asking $800 shipped. Message me if you are interested. Can provide pictures.
"If the rotor is powered (i.e. motors that power the rotor are on the rotor), you dont need to cancel out of a lot of torque on the fuselage-- you just need to cancel out the torque due to drag on your joint between the fuselage and rotor (bearings…"
"Well if you call a DJI phantom flying in restricted airspace a model aircraft, then it is the right direction.
Or a solo flying in a tennis stadium...
Or whatever team black sheep does...."
"Hi Doug,
First off, thank you for making these videos and that spreadsheet. They are very nice tools, and as you outline in your videos, they are very useful for the initial sizing and conceptual model of a UAV.
One thing that would recommend…"
"The goal of the video was give an introduction to PID control with a practical example that interested students could relate to: driving a car. With a four minute video, you do not have time to explain how to tune the controller-- that is control…"
"It looks like the NAVIO board is fairly simple-- They give a lot of details how the board is wired and might be possible for a DIY'er to fab up their own shield.