- Joined
- Feb 13, 2016
- Messages
- 96
- Reaction score
- 28
- Age
- 65
I had already clearly stated that I was not interested in AutoPilot and the only question was "If Autopilot calculated the camera tilt angles", nothing more.
I did misstate what the post was all about in my "last response" and I didn't explain how to be precise with waypoints as I should have (more on that later), the calculations part is all about camera tilt angle but the post was also supposed to be about "Precision Waypoint Flights" (which is exactly what the title of the post implies) My fault for not explaining the precision part in my initial post.
You say that you were trying to be helpful and answer my questions (plural), I merely asked the same question two different ways but it was still only one question.
You stated that you would make two flights. I was trying to let people know that the first flight for setting camera angle could be eliminated by using the calculations (if they chose to).
If you just wanted to answer my question, you would have just said "Yes, it will calculate your camera angle" and left it at that.
Did my post sound like I needed to be helped? Did I sound like I was confused or getting crappy footage?
I never said that I was having problems with not getting smooth camera movements.
When you said how you would do it using AutoPilot, you were in effect suggesting that I should be using Autopilot.
In my initial post, I made it clear that I hope that using calculations like that would help someone with settings camera angles without having to put the drone in the air.
I also mentioned in the response above yours that it's a take it or leave it thing meaning "Whatever works for them" My way is my way, I don't expect anyone else to use my way unless they want to.
This all came about because a friend that was with me one day last week while acting as my VO asked if I would teach him how I did the calculations and asked if I would draw up a cheat sheet for him because he wanted to use it on his own personal recreational filming projects (he's not a certified manned aircraft pilot or legal to fly UASs). I decided that since he wanted to use it, maybe there are others on Inspire Pilots that may like to try it.
The suggestion is for those who do short filming projects in tight places. Why would anyone try to do long flights with part of it in tight spaces with nearby obstacles? (These are rhetorical questions, you don't have to answer them).
I did not try to push my technique on anyone., I merely stated that I hope it would help someone.
Not everyone needs an app like Autopilot.
Me for example, I do not fly farther than 300 ft.. Not because I'm afraid to, I just don't need to. I do short clips up close and personal (but not over people).
If I do need people in the video (that are directly under the drone), I use a platform with a green screen on the floor, Then I film them from my hydraulic bucket lift, then I insert them into the scene while maintaining scale. That's not easy, mostly because I have to match the lighting conditions and lighting can change drastically in an hour in an outdoor environment. I've done this for music videos and 8 minutes worth of video can take two days or more to film not including the audio recording.
Google earth is not accurate enough to put you within two feet of your target.
The very reason DJI done away with pre planning waypoints on a map in the app is because it's not accurate enough. The FAA as well as NASA recognised that and so did DJI. That is the very reason that we have to fly the route while recording waypoints, we also have to fly that recorded waypoint route the same day (preferably within an hour or two).
Here's the precision part I should have mentioned in my initial post:
I done an experiment a few months ago where I took 15 sheets of paper, placed them at least 15 feet apart on the ground and held them down with a metal bar (scattered around, not in a straight line), I put the sheets of paper at least 15 feet apart because you cannot record waypoints closer than 15 feet apart.
I pointed the camera straight down then put the Inspire directly over each sheet of paper and recorded the waypoint for that position. Then I flew the waypoint mission and it made the mark within less than two feet over each sheet of paper and each time I made a pass over those sheets of paper.
I left the paper on the ground and went back out the next day when the solar flare activity (kp) values were 1 point higher than they were the day before. When I flew it the second day when the kp values were different, the Inspire missed the sheets of paper by more than 10 feet!!
Again, the waypoints need to be flown as soon as possible after recording them. You should not wait till the next day to fly it even if the kp value is the same. The earth's magnetic field can affect GPS accuracy as well as solar flare activity.
One of the reasons some people went to AutoPilot and Litchi is because they can pre plan waypoints without having to fly the route first, but those waypoints are not going to be precise enough for close obstacles. Other reasons are all of the bells and whistles they included in the app (which are bells and whistles that are not of any use to me or my videos).
As a certified pilot for manned aircraft, I have received advisories about GPS inaccuracies due to solar flare activity as well as the earth's magnetic fields. The earth's magnetic fields can shift from one day to the next. There have been flights canceled due to high solar flare activity and large shifts in the earth's magnetic field.
Some advisories have suggested using VORs rather than GPS under VFR and IFR conditions (for navigation).
There's no way you could pull up Google Maps, put a waypoint a 5 feet to one side of a headstone, then put a waypoint 20 feet back from the first waypoint (148.6 feet up from the first waypoint) and expect it to hit the mark within 2 feet whenever you decide to fly.
Google earth is fine for more open areas like golf courses as long as there are no obstacles close to your route.
Again, just for the record, I do a lot of aerials but aerials are only about 5 to 10% of the filming I do, most of it is from ground level with ground equipment. Some of the aerials are done with a hydraulic bucket lift, some are done with a cable trolley system with a gyro stabilized brushless camera gimbal.
The inspires are really a small part of the arsenal. The whole reason for me having two 2 Inspires, 1 S800 and 1 S1000 is quite simply to get the cameras in the air. It's not about the flying at all.
If all I want to do is have fun flying, I will either fly one of my single rotor 3D RC helicopters or go rent a RemosGX, or a Cessna 172 manned airplane for the day.
I wish I could find a J3 Cub to rent but they aren't around here anymore.
That's funnyYou could do this with AutoPilot and you wouldn't have to be Albert Einstein either.
Here's the precision part I should have mentioned in my initial post:
I done an experiment a few months ago where I took 15 sheets of paper, placed them at least 15 feet apart on the ground and held them down with a metal bar (scattered around, not in a straight line), I put the sheets of paper at least 15 feet apart because you cannot record waypoints closer than 15 feet apart.
I pointed the camera straight down then put the Inspire directly over each sheet of paper and recorded the waypoint for that position. Then I flew the waypoint mission and it made the mark within less than two feet over each sheet of paper and each time I made a pass over those sheets of paper.
I left the paper on the ground and went back out the next day when the solar flare activity (kp) values were 1 point higher than they were the day before. When I flew it the second day when the kp values were different, the Inspire missed the sheets of paper by more than 10 feet!!
Again, the waypoints need to be flown as soon as possible after recording them. You should not wait till the next day to fly it even if the kp value is the same. The earth's magnetic field can affect GPS accuracy as well as solar flare activity.
Sorry - This IS NOT anything to do with magnetic field or solar activity/KP Index but simply GPS accuracy being affected by dilution of precision in both the horizontal and vertical planes (HDOP/VDOP).
Depending on what time of day you do your flight and your location will mean the satellites are positioned differently both overhead and on the horizon. If you have a cluster of sats overhead your positional precision will be bad, if they are spread out low on the horizon the HDOP/VDOP will be low and accuracy far better.
You could go out on the second day and your positional experience could be far better than the first day you did the experiment! It all depends on the spread/position of the satellite arrays relative to your position.
Joe, spend a little time here and you'll quickly learn there's always someone ready to pounce on anything you post u believe may be helpful. Not saying that's what sturgisphoto did. It is what it is.
Gotta have a thick skin here. You sound like an old fart like me. Soloed in 1969...
View attachment 9228
We use essential cookies to make this site work, and optional cookies to enhance your experience.