Here's my 1st mapping test flight with a Skyhunter twin-boom pusher. Im running Arduplane 2.73. Mapping camera is a Canon s95 running an intervalometer script via chdk. Its suspended from a single axis gimbal that keeps the camera pointing down regardless of aircraft bank angle. Video shot from a GoPro 3 Black Edition.
It took 120 photos during the 10 minute flight, and stitched with PT GUI. I need to refine my grid spacing and polygon locations relative to the target area, and intervalometer timing. The generated map is a little rough, but its a great start.
I gave up on using the APM trigger at 3m from waypoint function as I couldn't get it to work and there's just no documentation on it.
Comments
I assumebyou are using the professional edition?
nice
@Chris
Very good instructions. Thanks.
absolutely. If I can just find a point and shoot canon without optical image stabilization (OIS) that has the quality and megapixels (or better quality) of the S95, Ill be set! If I do find one, it needs to be the exact width or smaller to fit my gimbal...
Nice work. Very concise and easy to understand. Do you know if the command "trigger when 3m from waypoint" will ever be implemented? That would negate the DO commands that add to the 150 waypoint limit. On my larger mapping missions, Ive exceeded that many waypoints quite often.
If there was just a way to make the MP send the servo pulse to the mapped channel at a waypoint, vs putting the DO servo waypoint in line. That would make it much easier.
Matt, as promised here's the start of a CHDK/APM camera control tutorial.
Phil, with hybrid IS on or off, the results are the same. The lenses are still floating and rattle around with the vibes. Ive been experimenting with this camera on various platforms for over a year now.
Everything you've said I'm fully aware of, I just shot in auto to do the test yesterday. The 1st map was shot in manual, set to infinity. I disagree that I need more expertise with the camera.
read this if you want a little background on what Im talking about with the floating lenses:
http://www.rcgroups.com/forums/showthread.php?t=1515395
I comment multiple times in this tread about IOS and results, along with many others.
and my company is www.gunnphotoservices.com :)
Another test mission in the bag. Getting better at planning the grid. I made it significantly larger than the target area (in the middle) to ensure the plane has made the turn around the waypoint and gotten back on track before hitting the target. Line spacing of 100 feet and 4 second camera triggers @327 feet height yield great overlap and even better results.
BUT (yes there's always a but) My canon s95 with optical image stabilization is really giving me bad results. Its a known issue that Canon's optical image stabilization (they call it Hybrid IS as well) consists of two floating lenses that are gyro stabilized and work to correct small shake on your part. Unfortunately, even the slightest vibes from the motor/prop and it makes the lenses shake and ruins the photo. No amount of shutter speed can fix it (I'm already shooting at 1/1600 and I get intermittent blur from the lenses rattling around. I'm going to start looking for a new Canon that does not have OIS.
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