With the ever-increasing capabilities of smart phones, action cameras, and hand-held gimbals, the battle for the best shots is intensifying daily on platforms like YouTube and Instagram. Hyperlapse sequences are one of the popular weapons in the armoury, and [Daniel Riley] aka [rctestflight] realised that his autonomous boat could be an awesome hyperlapse platform.
This is the third version of his autonomous boat, with version 1 suffering from seaweed assaults and version 2 almost sleeping with the fishes. The new version is a flat bottomed craft was built almost completely from pink insulation foam, making it stable and unsinkable. It uses the same electronics and air boat propulsion as version 2, with addition of a GoPro mounted in smart phone gimbal to film the hyper lapses. It has a tendency to push the bow into the water at full throttle, due to the high mounted motors, but was corrected by adding a foam bulge beneath the bow, at the cost of some efficiency.
Getting the gimbal settings tuned to create hyperlapses without panning jumps turned out to be the most difficult part. On calm water the boat is stable enough to fool the IMU into believing that it’s is not turning, so the gimbal controller uses the motor encoders to keep position, which don’t allow it to absorb all the small heading corrections the boat is constantly making. Things improved after turning off the encoder integration, but it would still occasionally bump against the edges of the dead band inside which the gimbal does not turn with the boat. In the end [Daniel] settled for slowly panning the gimbal to the left, while plotting a path with carefully calculated left turns to keep the boat itself out of the shot. While not perfect, the sequences still beautifully captured the night time scenery of Lake Union, Seattle. Getting it to this level cost many hours of midnight testing, since [Daniel] was doing his best to avoid other boat traffic, and we believe it paid off.
We look forward to his next videos, including an update on his solar plane.
Nice! A prop (just one on a servo for direction) are what I chose for my hacked boat because I was doing some shallow-river boating and didn’t want to stir up sediment when I was videoing underwater. Now I need to fire up the boat again in 2020 and try to make it autonomous.
OK I’ll bite. What in the heck is a hyperlapse?
Clearly you did not watch the video before biting.
It needs a coat of paint. A few weeks of use out in the summer sun, and that extruded polystyrene will be disintegrating.
Exterior latex is probably good enough. It’s used by amateur boatbuilders for cheap knockabouts etc.
I’d consider a weighted keel a bit back of center to balance your camera. I expect the foam bulge is acting like a foil and actually sucking the bow down a bit to counteract its additional buoyancy.
This footage is really amazing, really unique. Great project!