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Archive for January, 2017
Posted by mike_kelly | Jan 30, 2017 @ 12:10 PM | 9,344 Views
I am constantly surprised at how hard it is to interface things together in multirotors. An example is putting together a Gimbal where the manufacturer seems to have no interest or plan for attaching the gimbal to a multirotor. Many have no method to attach other than bolting it in place to the bottom of the multirotor. A gimbal often needs to be able to be moved back and forth to balance the camera/gimbal on the frame. Tarot has their two carbon tube rails system but most gimbals have no way to attach to it.

No holes to mount the Tarot hangers:

One of the international aspects of the hobby is the creative ways people find to solve such problems and their willingness to share what they have done. One such person is Alan from the United Kingdom who designed an adapter to adapt the DYS NEX gimbal to a Tarot two tube rail system.

...Continue Reading
Posted by mike_kelly | Jan 20, 2017 @ 06:02 PM | 17,642 Views
Gimbals 101

A gimbal is a device used to stabilize a camera in one or more axis. When we fly an aircraft, it is subject to a lot of movement. Winds, thermals, turbulence and the vibration of props and motors can cause video and still images to blur. A gimbal senses the movement of the aircraft and moves the camera, via a brushless motor or servo, to keep it level even though the aircraft has moved. As the aircraft moves, the gimbal keeps the camera level in one or more axis. When the aircraft moves back to level, the gimbal returns the camera so it remains level in the new position of the aircraft. It does this so fast that the camera appears to sit motionless. Brushless gimbals are much more popular and costly than servo gimbals. The brushless motor can move much faster to keep the camera level than can a servo. But a servo gimbal might be just the ticket for still photography because it is lighter.

For the DIY gimbal builder the first requirement, not unlike a flight controller, is to get the camera perfectly balanced on the gimbal. If you roll, tilt or pan the camera it will stay where you leave it if it is balanced. If the gimbal motors have to assist in keeping the camera balanced they may run out of power to keep the camera level when the aircraft is bouncing around. That is why you need to choose a gimbal that has balance adjustments in all axes. You will need to slide the gimbal arms in and out to balance the weight of the camera. Also, gimbal designs...Continue Reading